diff --git a/compiler/svelte.js b/compiler/svelte.js
deleted file mode 100644
index 599cb12829..0000000000
--- a/compiler/svelte.js
+++ /dev/null
@@ -1,6982 +0,0 @@
-(function (global, factory) {
- typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('magic-string')) :
- typeof define === 'function' && define.amd ? define(['exports', 'magic-string'], factory) :
- (factory((global.svelte = global.svelte || {}),global.MagicString));
-}(this, (function (exports,MagicString) { 'use strict';
-
-var MagicString__default = 'default' in MagicString ? MagicString['default'] : MagicString;
-
-function getLocator ( source, options ) {
- if ( options === void 0 ) options = {};
-
- var offsetLine = options.offsetLine || 0;
- var offsetColumn = options.offsetColumn || 0;
-
- var originalLines = source.split( '\n' );
-
- var start = 0;
- var lineRanges = originalLines.map( function ( line, i ) {
- var end = start + line.length + 1;
- var range = { start: start, end: end, line: i };
-
- start = end;
- return range;
- });
-
- var i = 0;
-
- function rangeContains ( range, index ) {
- return range.start <= index && index < range.end;
- }
-
- function getLocation ( range, index ) {
- return { line: offsetLine + range.line, column: offsetColumn + index - range.start, character: index };
- }
-
- return function locate ( search, startIndex ) {
- if ( typeof search === 'string' ) {
- search = source.indexOf( search, startIndex || 0 );
- }
-
- var range = lineRanges[i];
-
- var d = search >= range.end ? 1 : -1;
-
- while ( range ) {
- if ( rangeContains( range, search ) ) return getLocation( range, search );
-
- i += d;
- range = lineRanges[i];
- }
- };
-}
-
-function locate ( source, search, options ) {
- if ( typeof options === 'number' ) {
- throw new Error( 'locate takes a { startIndex, offsetLine, offsetColumn } object as the third argument' );
- }
-
- return getLocator( source, options )( search, options && options.startIndex );
-}
-
-// Reserved word lists for various dialects of the language
-
-var reservedWords = {
- 3: "abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized throws transient volatile",
- 5: "class enum extends super const export import",
- 6: "enum",
- strict: "implements interface let package private protected public static yield",
- strictBind: "eval arguments"
-};
-
-// And the keywords
-
-var ecma5AndLessKeywords = "break case catch continue debugger default do else finally for function if return switch throw try var while with null true false instanceof typeof void delete new in this";
-
-var keywords = {
- 5: ecma5AndLessKeywords,
- 6: ecma5AndLessKeywords + " const class extends export import super"
-};
-
-// ## Character categories
-
-// Big ugly regular expressions that match characters in the
-// whitespace, identifier, and identifier-start categories. These
-// are only applied when a character is found to actually have a
-// code point above 128.
-// Generated by `bin/generate-identifier-regex.js`.
-
-var nonASCIIidentifierStartChars = "\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u037f\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u052f\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0-\u08b4\u08b6-\u08bd\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0980\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0af9\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c39\u0c3d\u0c58-\u0c5a\u0c60\u0c61\u0c80\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d54-\u0d56\u0d5f-\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f5\u13f8-\u13fd\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f8\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191e\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1c80-\u1c88\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2118-\u211d\u2124\u2126\u2128\u212a-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309b-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fd5\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua69d\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua7ae\ua7b0-\ua7b7\ua7f7-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua8fd\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\ua9e0-\ua9e4\ua9e6-\ua9ef\ua9fa-\ua9fe\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa7e-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uab30-\uab5a\uab5c-\uab65\uab70-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc";
-var nonASCIIidentifierChars = "\u200c\u200d\xb7\u0300-\u036f\u0387\u0483-\u0487\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u0669\u0670\u06d6-\u06dc\u06df-\u06e4\u06e7\u06e8\u06ea-\u06ed\u06f0-\u06f9\u0711\u0730-\u074a\u07a6-\u07b0\u07c0-\u07c9\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0859-\u085b\u08d4-\u08e1\u08e3-\u0903\u093a-\u093c\u093e-\u094f\u0951-\u0957\u0962\u0963\u0966-\u096f\u0981-\u0983\u09bc\u09be-\u09c4\u09c7\u09c8\u09cb-\u09cd\u09d7\u09e2\u09e3\u09e6-\u09ef\u0a01-\u0a03\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a66-\u0a71\u0a75\u0a81-\u0a83\u0abc\u0abe-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ae2\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b3c\u0b3e-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b66-\u0b6f\u0b82\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd7\u0be6-\u0bef\u0c00-\u0c03\u0c3e-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0c66-\u0c6f\u0c81-\u0c83\u0cbc\u0cbe-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0ce6-\u0cef\u0d01-\u0d03\u0d3e-\u0d44\u0d46-\u0d48\u0d4a-\u0d4d\u0d57\u0d62\u0d63\u0d66-\u0d6f\u0d82\u0d83\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0de6-\u0def\u0df2\u0df3\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0e50-\u0e59\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0ed0-\u0ed9\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e\u0f3f\u0f71-\u0f84\u0f86\u0f87\u0f8d-\u0f97\u0f99-\u0fbc\u0fc6\u102b-\u103e\u1040-\u1049\u1056-\u1059\u105e-\u1060\u1062-\u1064\u1067-\u106d\u1071-\u1074\u1082-\u108d\u108f-\u109d\u135d-\u135f\u1369-\u1371\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b4-\u17d3\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u18a9\u1920-\u192b\u1930-\u193b\u1946-\u194f\u19d0-\u19da\u1a17-\u1a1b\u1a55-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1ab0-\u1abd\u1b00-\u1b04\u1b34-\u1b44\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1b82\u1ba1-\u1bad\u1bb0-\u1bb9\u1be6-\u1bf3\u1c24-\u1c37\u1c40-\u1c49\u1c50-\u1c59\u1cd0-\u1cd2\u1cd4-\u1ce8\u1ced\u1cf2-\u1cf4\u1cf8\u1cf9\u1dc0-\u1df5\u1dfb-\u1dff\u203f\u2040\u2054\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2cef-\u2cf1\u2d7f\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua620-\ua629\ua66f\ua674-\ua67d\ua69e\ua69f\ua6f0\ua6f1\ua802\ua806\ua80b\ua823-\ua827\ua880\ua881\ua8b4-\ua8c5\ua8d0-\ua8d9\ua8e0-\ua8f1\ua900-\ua909\ua926-\ua92d\ua947-\ua953\ua980-\ua983\ua9b3-\ua9c0\ua9d0-\ua9d9\ua9e5\ua9f0-\ua9f9\uaa29-\uaa36\uaa43\uaa4c\uaa4d\uaa50-\uaa59\uaa7b-\uaa7d\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uaaeb-\uaaef\uaaf5\uaaf6\uabe3-\uabea\uabec\uabed\uabf0-\uabf9\ufb1e\ufe00-\ufe0f\ufe20-\ufe2f\ufe33\ufe34\ufe4d-\ufe4f\uff10-\uff19\uff3f";
-
-var nonASCIIidentifierStart = new RegExp("[" + nonASCIIidentifierStartChars + "]");
-var nonASCIIidentifier = new RegExp("[" + nonASCIIidentifierStartChars + nonASCIIidentifierChars + "]");
-
-nonASCIIidentifierStartChars = nonASCIIidentifierChars = null;
-
-// These are a run-length and offset encoded representation of the
-// >0xffff code points that are a valid part of identifiers. The
-// offset starts at 0x10000, and each pair of numbers represents an
-// offset to the next range, and then a size of the range. They were
-// generated by bin/generate-identifier-regex.js
-var astralIdentifierStartCodes = [0,11,2,25,2,18,2,1,2,14,3,13,35,122,70,52,268,28,4,48,48,31,17,26,6,37,11,29,3,35,5,7,2,4,43,157,19,35,5,35,5,39,9,51,157,310,10,21,11,7,153,5,3,0,2,43,2,1,4,0,3,22,11,22,10,30,66,18,2,1,11,21,11,25,71,55,7,1,65,0,16,3,2,2,2,26,45,28,4,28,36,7,2,27,28,53,11,21,11,18,14,17,111,72,56,50,14,50,785,52,76,44,33,24,27,35,42,34,4,0,13,47,15,3,22,0,2,0,36,17,2,24,85,6,2,0,2,3,2,14,2,9,8,46,39,7,3,1,3,21,2,6,2,1,2,4,4,0,19,0,13,4,159,52,19,3,54,47,21,1,2,0,185,46,42,3,37,47,21,0,60,42,86,25,391,63,32,0,449,56,264,8,2,36,18,0,50,29,881,921,103,110,18,195,2749,1070,4050,582,8634,568,8,30,114,29,19,47,17,3,32,20,6,18,881,68,12,0,67,12,65,0,32,6124,20,754,9486,1,3071,106,6,12,4,8,8,9,5991,84,2,70,2,1,3,0,3,1,3,3,2,11,2,0,2,6,2,64,2,3,3,7,2,6,2,27,2,3,2,4,2,0,4,6,2,339,3,24,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,30,2,24,2,7,4149,196,60,67,1213,3,2,26,2,1,2,0,3,0,2,9,2,3,2,0,2,0,7,0,5,0,2,0,2,0,2,2,2,1,2,0,3,0,2,0,2,0,2,0,2,0,2,1,2,0,3,3,2,6,2,3,2,3,2,0,2,9,2,16,6,2,2,4,2,16,4421,42710,42,4148,12,221,3,5761,10591,541];
-var astralIdentifierCodes = [509,0,227,0,150,4,294,9,1368,2,2,1,6,3,41,2,5,0,166,1,1306,2,54,14,32,9,16,3,46,10,54,9,7,2,37,13,2,9,52,0,13,2,49,13,10,2,4,9,83,11,7,0,161,11,6,9,7,3,57,0,2,6,3,1,3,2,10,0,11,1,3,6,4,4,193,17,10,9,87,19,13,9,214,6,3,8,28,1,83,16,16,9,82,12,9,9,84,14,5,9,423,9,838,7,2,7,17,9,57,21,2,13,19882,9,135,4,60,6,26,9,1016,45,17,3,19723,1,5319,4,4,5,9,7,3,6,31,3,149,2,1418,49,513,54,5,49,9,0,15,0,23,4,2,14,1361,6,2,16,3,6,2,1,2,4,2214,6,110,6,6,9,792487,239];
-
-// This has a complexity linear to the value of the code. The
-// assumption is that looking up astral identifier characters is
-// rare.
-function isInAstralSet(code, set) {
- var pos = 0x10000;
- for (var i = 0; i < set.length; i += 2) {
- pos += set[i];
- if (pos > code) return false
- pos += set[i + 1];
- if (pos >= code) return true
- }
-}
-
-// Test whether a given character code starts an identifier.
-
-function isIdentifierStart(code, astral) {
- if (code < 65) return code === 36
- if (code < 91) return true
- if (code < 97) return code === 95
- if (code < 123) return true
- if (code <= 0xffff) return code >= 0xaa && nonASCIIidentifierStart.test(String.fromCharCode(code))
- if (astral === false) return false
- return isInAstralSet(code, astralIdentifierStartCodes)
-}
-
-// Test whether a given character is part of an identifier.
-
-function isIdentifierChar(code, astral) {
- if (code < 48) return code === 36
- if (code < 58) return true
- if (code < 65) return false
- if (code < 91) return true
- if (code < 97) return code === 95
- if (code < 123) return true
- if (code <= 0xffff) return code >= 0xaa && nonASCIIidentifier.test(String.fromCharCode(code))
- if (astral === false) return false
- return isInAstralSet(code, astralIdentifierStartCodes) || isInAstralSet(code, astralIdentifierCodes)
-}
-
-// ## Token types
-
-// The assignment of fine-grained, information-carrying type objects
-// allows the tokenizer to store the information it has about a
-// token in a way that is very cheap for the parser to look up.
-
-// All token type variables start with an underscore, to make them
-// easy to recognize.
-
-// The `beforeExpr` property is used to disambiguate between regular
-// expressions and divisions. It is set on all token types that can
-// be followed by an expression (thus, a slash after them would be a
-// regular expression).
-//
-// The `startsExpr` property is used to check if the token ends a
-// `yield` expression. It is set on all token types that either can
-// directly start an expression (like a quotation mark) or can
-// continue an expression (like the body of a string).
-//
-// `isLoop` marks a keyword as starting a loop, which is important
-// to know when parsing a label, in order to allow or disallow
-// continue jumps to that label.
-
-var TokenType = function TokenType(label, conf) {
- if ( conf === void 0 ) conf = {};
-
- this.label = label;
- this.keyword = conf.keyword;
- this.beforeExpr = !!conf.beforeExpr;
- this.startsExpr = !!conf.startsExpr;
- this.isLoop = !!conf.isLoop;
- this.isAssign = !!conf.isAssign;
- this.prefix = !!conf.prefix;
- this.postfix = !!conf.postfix;
- this.binop = conf.binop || null;
- this.updateContext = null;
-};
-
-function binop(name, prec) {
- return new TokenType(name, {beforeExpr: true, binop: prec})
-}
-var beforeExpr = {beforeExpr: true};
-var startsExpr = {startsExpr: true};
-// Map keyword names to token types.
-
-var keywordTypes = {};
-
-// Succinct definitions of keyword token types
-function kw(name, options) {
- if ( options === void 0 ) options = {};
-
- options.keyword = name;
- return keywordTypes[name] = new TokenType(name, options)
-}
-
-var tt = {
- num: new TokenType("num", startsExpr),
- regexp: new TokenType("regexp", startsExpr),
- string: new TokenType("string", startsExpr),
- name: new TokenType("name", startsExpr),
- eof: new TokenType("eof"),
-
- // Punctuation token types.
- bracketL: new TokenType("[", {beforeExpr: true, startsExpr: true}),
- bracketR: new TokenType("]"),
- braceL: new TokenType("{", {beforeExpr: true, startsExpr: true}),
- braceR: new TokenType("}"),
- parenL: new TokenType("(", {beforeExpr: true, startsExpr: true}),
- parenR: new TokenType(")"),
- comma: new TokenType(",", beforeExpr),
- semi: new TokenType(";", beforeExpr),
- colon: new TokenType(":", beforeExpr),
- dot: new TokenType("."),
- question: new TokenType("?", beforeExpr),
- arrow: new TokenType("=>", beforeExpr),
- template: new TokenType("template"),
- ellipsis: new TokenType("...", beforeExpr),
- backQuote: new TokenType("`", startsExpr),
- dollarBraceL: new TokenType("${", {beforeExpr: true, startsExpr: true}),
-
- // Operators. These carry several kinds of properties to help the
- // parser use them properly (the presence of these properties is
- // what categorizes them as operators).
- //
- // `binop`, when present, specifies that this operator is a binary
- // operator, and will refer to its precedence.
- //
- // `prefix` and `postfix` mark the operator as a prefix or postfix
- // unary operator.
- //
- // `isAssign` marks all of `=`, `+=`, `-=` etcetera, which act as
- // binary operators with a very low precedence, that should result
- // in AssignmentExpression nodes.
-
- eq: new TokenType("=", {beforeExpr: true, isAssign: true}),
- assign: new TokenType("_=", {beforeExpr: true, isAssign: true}),
- incDec: new TokenType("++/--", {prefix: true, postfix: true, startsExpr: true}),
- prefix: new TokenType("prefix", {beforeExpr: true, prefix: true, startsExpr: true}),
- logicalOR: binop("||", 1),
- logicalAND: binop("&&", 2),
- bitwiseOR: binop("|", 3),
- bitwiseXOR: binop("^", 4),
- bitwiseAND: binop("&", 5),
- equality: binop("==/!=", 6),
- relational: binop("", 7),
- bitShift: binop("<>", 8),
- plusMin: new TokenType("+/-", {beforeExpr: true, binop: 9, prefix: true, startsExpr: true}),
- modulo: binop("%", 10),
- star: binop("*", 10),
- slash: binop("/", 10),
- starstar: new TokenType("**", {beforeExpr: true}),
-
- // Keyword token types.
- _break: kw("break"),
- _case: kw("case", beforeExpr),
- _catch: kw("catch"),
- _continue: kw("continue"),
- _debugger: kw("debugger"),
- _default: kw("default", beforeExpr),
- _do: kw("do", {isLoop: true, beforeExpr: true}),
- _else: kw("else", beforeExpr),
- _finally: kw("finally"),
- _for: kw("for", {isLoop: true}),
- _function: kw("function", startsExpr),
- _if: kw("if"),
- _return: kw("return", beforeExpr),
- _switch: kw("switch"),
- _throw: kw("throw", beforeExpr),
- _try: kw("try"),
- _var: kw("var"),
- _const: kw("const"),
- _while: kw("while", {isLoop: true}),
- _with: kw("with"),
- _new: kw("new", {beforeExpr: true, startsExpr: true}),
- _this: kw("this", startsExpr),
- _super: kw("super", startsExpr),
- _class: kw("class"),
- _extends: kw("extends", beforeExpr),
- _export: kw("export"),
- _import: kw("import"),
- _null: kw("null", startsExpr),
- _true: kw("true", startsExpr),
- _false: kw("false", startsExpr),
- _in: kw("in", {beforeExpr: true, binop: 7}),
- _instanceof: kw("instanceof", {beforeExpr: true, binop: 7}),
- _typeof: kw("typeof", {beforeExpr: true, prefix: true, startsExpr: true}),
- _void: kw("void", {beforeExpr: true, prefix: true, startsExpr: true}),
- _delete: kw("delete", {beforeExpr: true, prefix: true, startsExpr: true})
-};
-
-// Matches a whole line break (where CRLF is considered a single
-// line break). Used to count lines.
-
-var lineBreak = /\r\n?|\n|\u2028|\u2029/;
-var lineBreakG = new RegExp(lineBreak.source, "g");
-
-function isNewLine(code) {
- return code === 10 || code === 13 || code === 0x2028 || code === 0x2029
-}
-
-var nonASCIIwhitespace = /[\u1680\u180e\u2000-\u200a\u202f\u205f\u3000\ufeff]/;
-
-var skipWhiteSpace = /(?:\s|\/\/.*|\/\*[^]*?\*\/)*/g;
-
-function isArray(obj) {
- return Object.prototype.toString.call(obj) === "[object Array]"
-}
-
-// Checks if an object has a property.
-
-function has(obj, propName) {
- return Object.prototype.hasOwnProperty.call(obj, propName)
-}
-
-// These are used when `options.locations` is on, for the
-// `startLoc` and `endLoc` properties.
-
-var Position = function Position(line, col) {
- this.line = line;
- this.column = col;
-};
-
-Position.prototype.offset = function offset (n) {
- return new Position(this.line, this.column + n)
-};
-
-var SourceLocation = function SourceLocation(p, start, end) {
- this.start = start;
- this.end = end;
- if (p.sourceFile !== null) this.source = p.sourceFile;
-};
-
-// The `getLineInfo` function is mostly useful when the
-// `locations` option is off (for performance reasons) and you
-// want to find the line/column position for a given character
-// offset. `input` should be the code string that the offset refers
-// into.
-
-function getLineInfo(input, offset) {
- for (var line = 1, cur = 0;;) {
- lineBreakG.lastIndex = cur;
- var match = lineBreakG.exec(input);
- if (match && match.index < offset) {
- ++line;
- cur = match.index + match[0].length;
- } else {
- return new Position(line, offset - cur)
- }
- }
-}
-
-// A second optional argument can be given to further configure
-// the parser process. These options are recognized:
-
-var defaultOptions = {
- // `ecmaVersion` indicates the ECMAScript version to parse. Must
- // be either 3, 5, 6 (2015), 7 (2016), or 8 (2017). This influences support
- // for strict mode, the set of reserved words, and support for
- // new syntax features. The default is 7.
- ecmaVersion: 7,
- // `sourceType` indicates the mode the code should be parsed in.
- // Can be either `"script"` or `"module"`. This influences global
- // strict mode and parsing of `import` and `export` declarations.
- sourceType: "script",
- // `onInsertedSemicolon` can be a callback that will be called
- // when a semicolon is automatically inserted. It will be passed
- // th position of the comma as an offset, and if `locations` is
- // enabled, it is given the location as a `{line, column}` object
- // as second argument.
- onInsertedSemicolon: null,
- // `onTrailingComma` is similar to `onInsertedSemicolon`, but for
- // trailing commas.
- onTrailingComma: null,
- // By default, reserved words are only enforced if ecmaVersion >= 5.
- // Set `allowReserved` to a boolean value to explicitly turn this on
- // an off. When this option has the value "never", reserved words
- // and keywords can also not be used as property names.
- allowReserved: null,
- // When enabled, a return at the top level is not considered an
- // error.
- allowReturnOutsideFunction: false,
- // When enabled, import/export statements are not constrained to
- // appearing at the top of the program.
- allowImportExportEverywhere: false,
- // When enabled, hashbang directive in the beginning of file
- // is allowed and treated as a line comment.
- allowHashBang: false,
- // When `locations` is on, `loc` properties holding objects with
- // `start` and `end` properties in `{line, column}` form (with
- // line being 1-based and column 0-based) will be attached to the
- // nodes.
- locations: false,
- // A function can be passed as `onToken` option, which will
- // cause Acorn to call that function with object in the same
- // format as tokens returned from `tokenizer().getToken()`. Note
- // that you are not allowed to call the parser from the
- // callback—that will corrupt its internal state.
- onToken: null,
- // A function can be passed as `onComment` option, which will
- // cause Acorn to call that function with `(block, text, start,
- // end)` parameters whenever a comment is skipped. `block` is a
- // boolean indicating whether this is a block (`/* */`) comment,
- // `text` is the content of the comment, and `start` and `end` are
- // character offsets that denote the start and end of the comment.
- // When the `locations` option is on, two more parameters are
- // passed, the full `{line, column}` locations of the start and
- // end of the comments. Note that you are not allowed to call the
- // parser from the callback—that will corrupt its internal state.
- onComment: null,
- // Nodes have their start and end characters offsets recorded in
- // `start` and `end` properties (directly on the node, rather than
- // the `loc` object, which holds line/column data. To also add a
- // [semi-standardized][range] `range` property holding a `[start,
- // end]` array with the same numbers, set the `ranges` option to
- // `true`.
- //
- // [range]: https://bugzilla.mozilla.org/show_bug.cgi?id=745678
- ranges: false,
- // It is possible to parse multiple files into a single AST by
- // passing the tree produced by parsing the first file as
- // `program` option in subsequent parses. This will add the
- // toplevel forms of the parsed file to the `Program` (top) node
- // of an existing parse tree.
- program: null,
- // When `locations` is on, you can pass this to record the source
- // file in every node's `loc` object.
- sourceFile: null,
- // This value, if given, is stored in every node, whether
- // `locations` is on or off.
- directSourceFile: null,
- // When enabled, parenthesized expressions are represented by
- // (non-standard) ParenthesizedExpression nodes
- preserveParens: false,
- plugins: {}
-};
-
-// Interpret and default an options object
-
-function getOptions(opts) {
- var options = {};
-
- for (var opt in defaultOptions)
- options[opt] = opts && has(opts, opt) ? opts[opt] : defaultOptions[opt];
-
- if (options.ecmaVersion >= 2015)
- options.ecmaVersion -= 2009;
-
- if (options.allowReserved == null)
- options.allowReserved = options.ecmaVersion < 5;
-
- if (isArray(options.onToken)) {
- var tokens = options.onToken;
- options.onToken = function (token) { return tokens.push(token); };
- }
- if (isArray(options.onComment))
- options.onComment = pushComment(options, options.onComment);
-
- return options
-}
-
-function pushComment(options, array) {
- return function (block, text, start, end, startLoc, endLoc) {
- var comment = {
- type: block ? 'Block' : 'Line',
- value: text,
- start: start,
- end: end
- };
- if (options.locations)
- comment.loc = new SourceLocation(this, startLoc, endLoc);
- if (options.ranges)
- comment.range = [start, end];
- array.push(comment);
- }
-}
-
-// Registered plugins
-var plugins = {};
-
-function keywordRegexp(words) {
- return new RegExp("^(" + words.replace(/ /g, "|") + ")$")
-}
-
-var Parser = function Parser(options, input, startPos) {
- this.options = options = getOptions(options);
- this.sourceFile = options.sourceFile;
- this.keywords = keywordRegexp(keywords[options.ecmaVersion >= 6 ? 6 : 5]);
- var reserved = "";
- if (!options.allowReserved) {
- for (var v = options.ecmaVersion;; v--)
- if (reserved = reservedWords[v]) break
- if (options.sourceType == "module") reserved += " await";
- }
- this.reservedWords = keywordRegexp(reserved);
- var reservedStrict = (reserved ? reserved + " " : "") + reservedWords.strict;
- this.reservedWordsStrict = keywordRegexp(reservedStrict);
- this.reservedWordsStrictBind = keywordRegexp(reservedStrict + " " + reservedWords.strictBind);
- this.input = String(input);
-
- // Used to signal to callers of `readWord1` whether the word
- // contained any escape sequences. This is needed because words with
- // escape sequences must not be interpreted as keywords.
- this.containsEsc = false;
-
- // Load plugins
- this.loadPlugins(options.plugins);
-
- // Set up token state
-
- // The current position of the tokenizer in the input.
- if (startPos) {
- this.pos = startPos;
- this.lineStart = this.input.lastIndexOf("\n", startPos - 1) + 1;
- this.curLine = this.input.slice(0, this.lineStart).split(lineBreak).length;
- } else {
- this.pos = this.lineStart = 0;
- this.curLine = 1;
- }
-
- // Properties of the current token:
- // Its type
- this.type = tt.eof;
- // For tokens that include more information than their type, the value
- this.value = null;
- // Its start and end offset
- this.start = this.end = this.pos;
- // And, if locations are used, the {line, column} object
- // corresponding to those offsets
- this.startLoc = this.endLoc = this.curPosition();
-
- // Position information for the previous token
- this.lastTokEndLoc = this.lastTokStartLoc = null;
- this.lastTokStart = this.lastTokEnd = this.pos;
-
- // The context stack is used to superficially track syntactic
- // context to predict whether a regular expression is allowed in a
- // given position.
- this.context = this.initialContext();
- this.exprAllowed = true;
-
- // Figure out if it's a module code.
- this.strict = this.inModule = options.sourceType === "module";
-
- // Used to signify the start of a potential arrow function
- this.potentialArrowAt = -1;
-
- // Flags to track whether we are in a function, a generator, an async function.
- this.inFunction = this.inGenerator = this.inAsync = false;
- // Positions to delayed-check that yield/await does not exist in default parameters.
- this.yieldPos = this.awaitPos = 0;
- // Labels in scope.
- this.labels = [];
-
- // If enabled, skip leading hashbang line.
- if (this.pos === 0 && options.allowHashBang && this.input.slice(0, 2) === '#!')
- this.skipLineComment(2);
-};
-
-// DEPRECATED Kept for backwards compatibility until 3.0 in case a plugin uses them
-Parser.prototype.isKeyword = function isKeyword (word) { return this.keywords.test(word) };
-Parser.prototype.isReservedWord = function isReservedWord (word) { return this.reservedWords.test(word) };
-
-Parser.prototype.extend = function extend (name, f) {
- this[name] = f(this[name]);
-};
-
-Parser.prototype.loadPlugins = function loadPlugins (pluginConfigs) {
- var this$1 = this;
-
- for (var name in pluginConfigs) {
- var plugin = plugins[name];
- if (!plugin) throw new Error("Plugin '" + name + "' not found")
- plugin(this$1, pluginConfigs[name]);
- }
-};
-
-Parser.prototype.parse = function parse$1 () {
- var node = this.options.program || this.startNode();
- this.nextToken();
- return this.parseTopLevel(node)
-};
-
-var pp = Parser.prototype;
-
-// ## Parser utilities
-
-// Test whether a statement node is the string literal `"use strict"`.
-
-pp.isUseStrict = function(stmt) {
- return this.options.ecmaVersion >= 5 && stmt.type === "ExpressionStatement" &&
- stmt.expression.type === "Literal" &&
- stmt.expression.raw.slice(1, -1) === "use strict"
-};
-
-// Predicate that tests whether the next token is of the given
-// type, and if yes, consumes it as a side effect.
-
-pp.eat = function(type) {
- if (this.type === type) {
- this.next();
- return true
- } else {
- return false
- }
-};
-
-// Tests whether parsed token is a contextual keyword.
-
-pp.isContextual = function(name) {
- return this.type === tt.name && this.value === name
-};
-
-// Consumes contextual keyword if possible.
-
-pp.eatContextual = function(name) {
- return this.value === name && this.eat(tt.name)
-};
-
-// Asserts that following token is given contextual keyword.
-
-pp.expectContextual = function(name) {
- if (!this.eatContextual(name)) this.unexpected();
-};
-
-// Test whether a semicolon can be inserted at the current position.
-
-pp.canInsertSemicolon = function() {
- return this.type === tt.eof ||
- this.type === tt.braceR ||
- lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
-};
-
-pp.insertSemicolon = function() {
- if (this.canInsertSemicolon()) {
- if (this.options.onInsertedSemicolon)
- this.options.onInsertedSemicolon(this.lastTokEnd, this.lastTokEndLoc);
- return true
- }
-};
-
-// Consume a semicolon, or, failing that, see if we are allowed to
-// pretend that there is a semicolon at this position.
-
-pp.semicolon = function() {
- if (!this.eat(tt.semi) && !this.insertSemicolon()) this.unexpected();
-};
-
-pp.afterTrailingComma = function(tokType, notNext) {
- if (this.type == tokType) {
- if (this.options.onTrailingComma)
- this.options.onTrailingComma(this.lastTokStart, this.lastTokStartLoc);
- if (!notNext)
- this.next();
- return true
- }
-};
-
-// Expect a token of a given type. If found, consume it, otherwise,
-// raise an unexpected token error.
-
-pp.expect = function(type) {
- this.eat(type) || this.unexpected();
-};
-
-// Raise an unexpected token error.
-
-pp.unexpected = function(pos) {
- this.raise(pos != null ? pos : this.start, "Unexpected token");
-};
-
-var DestructuringErrors = function DestructuringErrors() {
- this.shorthandAssign = 0;
- this.trailingComma = 0;
-};
-
-pp.checkPatternErrors = function(refDestructuringErrors, andThrow) {
- var trailing = refDestructuringErrors && refDestructuringErrors.trailingComma;
- if (!andThrow) return !!trailing
- if (trailing) this.raise(trailing, "Comma is not permitted after the rest element");
-};
-
-pp.checkExpressionErrors = function(refDestructuringErrors, andThrow) {
- var pos = refDestructuringErrors && refDestructuringErrors.shorthandAssign;
- if (!andThrow) return !!pos
- if (pos) this.raise(pos, "Shorthand property assignments are valid only in destructuring patterns");
-};
-
-pp.checkYieldAwaitInDefaultParams = function() {
- if (this.yieldPos && (!this.awaitPos || this.yieldPos < this.awaitPos))
- this.raise(this.yieldPos, "Yield expression cannot be a default value");
- if (this.awaitPos)
- this.raise(this.awaitPos, "Await expression cannot be a default value");
-};
-
-var pp$1 = Parser.prototype;
-
-// ### Statement parsing
-
-// Parse a program. Initializes the parser, reads any number of
-// statements, and wraps them in a Program node. Optionally takes a
-// `program` argument. If present, the statements will be appended
-// to its body instead of creating a new node.
-
-pp$1.parseTopLevel = function(node) {
- var this$1 = this;
-
- var first = true, exports = {};
- if (!node.body) node.body = [];
- while (this.type !== tt.eof) {
- var stmt = this$1.parseStatement(true, true, exports);
- node.body.push(stmt);
- if (first) {
- if (this$1.isUseStrict(stmt)) this$1.setStrict(true);
- first = false;
- }
- }
- this.next();
- if (this.options.ecmaVersion >= 6) {
- node.sourceType = this.options.sourceType;
- }
- return this.finishNode(node, "Program")
-};
-
-var loopLabel = {kind: "loop"};
-var switchLabel = {kind: "switch"};
-pp$1.isLet = function() {
- if (this.type !== tt.name || this.options.ecmaVersion < 6 || this.value != "let") return false
- skipWhiteSpace.lastIndex = this.pos;
- var skip = skipWhiteSpace.exec(this.input);
- var next = this.pos + skip[0].length, nextCh = this.input.charCodeAt(next);
- if (nextCh === 91 || nextCh == 123) return true // '{' and '['
- if (isIdentifierStart(nextCh, true)) {
- for (var pos = next + 1; isIdentifierChar(this.input.charCodeAt(pos), true); ++pos) {}
- var ident = this.input.slice(next, pos);
- if (!this.isKeyword(ident)) return true
- }
- return false
-};
-
-// check 'async [no LineTerminator here] function'
-// - 'async /*foo*/ function' is OK.
-// - 'async /*\n*/ function' is invalid.
-pp$1.isAsyncFunction = function() {
- if (this.type !== tt.name || this.options.ecmaVersion < 8 || this.value != "async")
- return false
-
- skipWhiteSpace.lastIndex = this.pos;
- var skip = skipWhiteSpace.exec(this.input);
- var next = this.pos + skip[0].length;
- return !lineBreak.test(this.input.slice(this.pos, next)) &&
- this.input.slice(next, next + 8) === "function" &&
- (next + 8 == this.input.length || !isIdentifierChar(this.input.charAt(next + 8)))
-};
-
-// Parse a single statement.
-//
-// If expecting a statement and finding a slash operator, parse a
-// regular expression literal. This is to handle cases like
-// `if (foo) /blah/.exec(foo)`, where looking at the previous token
-// does not help.
-
-pp$1.parseStatement = function(declaration, topLevel, exports) {
- var starttype = this.type, node = this.startNode(), kind;
-
- if (this.isLet()) {
- starttype = tt._var;
- kind = "let";
- }
-
- // Most types of statements are recognized by the keyword they
- // start with. Many are trivial to parse, some require a bit of
- // complexity.
-
- switch (starttype) {
- case tt._break: case tt._continue: return this.parseBreakContinueStatement(node, starttype.keyword)
- case tt._debugger: return this.parseDebuggerStatement(node)
- case tt._do: return this.parseDoStatement(node)
- case tt._for: return this.parseForStatement(node)
- case tt._function:
- if (!declaration && this.options.ecmaVersion >= 6) this.unexpected();
- return this.parseFunctionStatement(node, false)
- case tt._class:
- if (!declaration) this.unexpected();
- return this.parseClass(node, true)
- case tt._if: return this.parseIfStatement(node)
- case tt._return: return this.parseReturnStatement(node)
- case tt._switch: return this.parseSwitchStatement(node)
- case tt._throw: return this.parseThrowStatement(node)
- case tt._try: return this.parseTryStatement(node)
- case tt._const: case tt._var:
- kind = kind || this.value;
- if (!declaration && kind != "var") this.unexpected();
- return this.parseVarStatement(node, kind)
- case tt._while: return this.parseWhileStatement(node)
- case tt._with: return this.parseWithStatement(node)
- case tt.braceL: return this.parseBlock()
- case tt.semi: return this.parseEmptyStatement(node)
- case tt._export:
- case tt._import:
- if (!this.options.allowImportExportEverywhere) {
- if (!topLevel)
- this.raise(this.start, "'import' and 'export' may only appear at the top level");
- if (!this.inModule)
- this.raise(this.start, "'import' and 'export' may appear only with 'sourceType: module'");
- }
- return starttype === tt._import ? this.parseImport(node) : this.parseExport(node, exports)
-
- // If the statement does not start with a statement keyword or a
- // brace, it's an ExpressionStatement or LabeledStatement. We
- // simply start parsing an expression, and afterwards, if the
- // next token is a colon and the expression was a simple
- // Identifier node, we switch to interpreting it as a label.
- default:
- if (this.isAsyncFunction() && declaration) {
- this.next();
- return this.parseFunctionStatement(node, true)
- }
-
- var maybeName = this.value, expr = this.parseExpression();
- if (starttype === tt.name && expr.type === "Identifier" && this.eat(tt.colon))
- return this.parseLabeledStatement(node, maybeName, expr)
- else return this.parseExpressionStatement(node, expr)
- }
-};
-
-pp$1.parseBreakContinueStatement = function(node, keyword) {
- var this$1 = this;
-
- var isBreak = keyword == "break";
- this.next();
- if (this.eat(tt.semi) || this.insertSemicolon()) node.label = null;
- else if (this.type !== tt.name) this.unexpected();
- else {
- node.label = this.parseIdent();
- this.semicolon();
- }
-
- // Verify that there is an actual destination to break or
- // continue to.
- for (var i = 0; i < this.labels.length; ++i) {
- var lab = this$1.labels[i];
- if (node.label == null || lab.name === node.label.name) {
- if (lab.kind != null && (isBreak || lab.kind === "loop")) break
- if (node.label && isBreak) break
- }
- }
- if (i === this.labels.length) this.raise(node.start, "Unsyntactic " + keyword);
- return this.finishNode(node, isBreak ? "BreakStatement" : "ContinueStatement")
-};
-
-pp$1.parseDebuggerStatement = function(node) {
- this.next();
- this.semicolon();
- return this.finishNode(node, "DebuggerStatement")
-};
-
-pp$1.parseDoStatement = function(node) {
- this.next();
- this.labels.push(loopLabel);
- node.body = this.parseStatement(false);
- this.labels.pop();
- this.expect(tt._while);
- node.test = this.parseParenExpression();
- if (this.options.ecmaVersion >= 6)
- this.eat(tt.semi);
- else
- this.semicolon();
- return this.finishNode(node, "DoWhileStatement")
-};
-
-// Disambiguating between a `for` and a `for`/`in` or `for`/`of`
-// loop is non-trivial. Basically, we have to parse the init `var`
-// statement or expression, disallowing the `in` operator (see
-// the second parameter to `parseExpression`), and then check
-// whether the next token is `in` or `of`. When there is no init
-// part (semicolon immediately after the opening parenthesis), it
-// is a regular `for` loop.
-
-pp$1.parseForStatement = function(node) {
- this.next();
- this.labels.push(loopLabel);
- this.expect(tt.parenL);
- if (this.type === tt.semi) return this.parseFor(node, null)
- var isLet = this.isLet();
- if (this.type === tt._var || this.type === tt._const || isLet) {
- var init$1 = this.startNode(), kind = isLet ? "let" : this.value;
- this.next();
- this.parseVar(init$1, true, kind);
- this.finishNode(init$1, "VariableDeclaration");
- if ((this.type === tt._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) && init$1.declarations.length === 1 &&
- !(kind !== "var" && init$1.declarations[0].init))
- return this.parseForIn(node, init$1)
- return this.parseFor(node, init$1)
- }
- var refDestructuringErrors = new DestructuringErrors;
- var init = this.parseExpression(true, refDestructuringErrors);
- if (this.type === tt._in || (this.options.ecmaVersion >= 6 && this.isContextual("of"))) {
- this.checkPatternErrors(refDestructuringErrors, true);
- this.toAssignable(init);
- this.checkLVal(init);
- return this.parseForIn(node, init)
- } else {
- this.checkExpressionErrors(refDestructuringErrors, true);
- }
- return this.parseFor(node, init)
-};
-
-pp$1.parseFunctionStatement = function(node, isAsync) {
- this.next();
- return this.parseFunction(node, true, false, isAsync)
-};
-
-pp$1.isFunction = function() {
- return this.type === tt._function || this.isAsyncFunction()
-};
-
-pp$1.parseIfStatement = function(node) {
- this.next();
- node.test = this.parseParenExpression();
- // allow function declarations in branches, but only in non-strict mode
- node.consequent = this.parseStatement(!this.strict && this.isFunction());
- node.alternate = this.eat(tt._else) ? this.parseStatement(!this.strict && this.isFunction()) : null;
- return this.finishNode(node, "IfStatement")
-};
-
-pp$1.parseReturnStatement = function(node) {
- if (!this.inFunction && !this.options.allowReturnOutsideFunction)
- this.raise(this.start, "'return' outside of function");
- this.next();
-
- // In `return` (and `break`/`continue`), the keywords with
- // optional arguments, we eagerly look for a semicolon or the
- // possibility to insert one.
-
- if (this.eat(tt.semi) || this.insertSemicolon()) node.argument = null;
- else { node.argument = this.parseExpression(); this.semicolon(); }
- return this.finishNode(node, "ReturnStatement")
-};
-
-pp$1.parseSwitchStatement = function(node) {
- var this$1 = this;
-
- this.next();
- node.discriminant = this.parseParenExpression();
- node.cases = [];
- this.expect(tt.braceL);
- this.labels.push(switchLabel);
-
- // Statements under must be grouped (by label) in SwitchCase
- // nodes. `cur` is used to keep the node that we are currently
- // adding statements to.
-
- for (var cur, sawDefault = false; this.type != tt.braceR;) {
- if (this$1.type === tt._case || this$1.type === tt._default) {
- var isCase = this$1.type === tt._case;
- if (cur) this$1.finishNode(cur, "SwitchCase");
- node.cases.push(cur = this$1.startNode());
- cur.consequent = [];
- this$1.next();
- if (isCase) {
- cur.test = this$1.parseExpression();
- } else {
- if (sawDefault) this$1.raiseRecoverable(this$1.lastTokStart, "Multiple default clauses");
- sawDefault = true;
- cur.test = null;
- }
- this$1.expect(tt.colon);
- } else {
- if (!cur) this$1.unexpected();
- cur.consequent.push(this$1.parseStatement(true));
- }
- }
- if (cur) this.finishNode(cur, "SwitchCase");
- this.next(); // Closing brace
- this.labels.pop();
- return this.finishNode(node, "SwitchStatement")
-};
-
-pp$1.parseThrowStatement = function(node) {
- this.next();
- if (lineBreak.test(this.input.slice(this.lastTokEnd, this.start)))
- this.raise(this.lastTokEnd, "Illegal newline after throw");
- node.argument = this.parseExpression();
- this.semicolon();
- return this.finishNode(node, "ThrowStatement")
-};
-
-// Reused empty array added for node fields that are always empty.
-
-var empty = [];
-
-pp$1.parseTryStatement = function(node) {
- this.next();
- node.block = this.parseBlock();
- node.handler = null;
- if (this.type === tt._catch) {
- var clause = this.startNode();
- this.next();
- this.expect(tt.parenL);
- clause.param = this.parseBindingAtom();
- this.checkLVal(clause.param, true);
- this.expect(tt.parenR);
- clause.body = this.parseBlock();
- node.handler = this.finishNode(clause, "CatchClause");
- }
- node.finalizer = this.eat(tt._finally) ? this.parseBlock() : null;
- if (!node.handler && !node.finalizer)
- this.raise(node.start, "Missing catch or finally clause");
- return this.finishNode(node, "TryStatement")
-};
-
-pp$1.parseVarStatement = function(node, kind) {
- this.next();
- this.parseVar(node, false, kind);
- this.semicolon();
- return this.finishNode(node, "VariableDeclaration")
-};
-
-pp$1.parseWhileStatement = function(node) {
- this.next();
- node.test = this.parseParenExpression();
- this.labels.push(loopLabel);
- node.body = this.parseStatement(false);
- this.labels.pop();
- return this.finishNode(node, "WhileStatement")
-};
-
-pp$1.parseWithStatement = function(node) {
- if (this.strict) this.raise(this.start, "'with' in strict mode");
- this.next();
- node.object = this.parseParenExpression();
- node.body = this.parseStatement(false);
- return this.finishNode(node, "WithStatement")
-};
-
-pp$1.parseEmptyStatement = function(node) {
- this.next();
- return this.finishNode(node, "EmptyStatement")
-};
-
-pp$1.parseLabeledStatement = function(node, maybeName, expr) {
- var this$1 = this;
-
- for (var i = 0; i < this.labels.length; ++i)
- if (this$1.labels[i].name === maybeName) this$1.raise(expr.start, "Label '" + maybeName + "' is already declared");
- var kind = this.type.isLoop ? "loop" : this.type === tt._switch ? "switch" : null;
- for (var i$1 = this.labels.length - 1; i$1 >= 0; i$1--) {
- var label = this$1.labels[i$1];
- if (label.statementStart == node.start) {
- label.statementStart = this$1.start;
- label.kind = kind;
- } else break
- }
- this.labels.push({name: maybeName, kind: kind, statementStart: this.start});
- node.body = this.parseStatement(true);
- this.labels.pop();
- node.label = expr;
- return this.finishNode(node, "LabeledStatement")
-};
-
-pp$1.parseExpressionStatement = function(node, expr) {
- node.expression = expr;
- this.semicolon();
- return this.finishNode(node, "ExpressionStatement")
-};
-
-// Parse a semicolon-enclosed block of statements, handling `"use
-// strict"` declarations when `allowStrict` is true (used for
-// function bodies).
-
-pp$1.parseBlock = function(allowStrict) {
- var this$1 = this;
-
- var node = this.startNode(), first = true, oldStrict;
- node.body = [];
- this.expect(tt.braceL);
- while (!this.eat(tt.braceR)) {
- var stmt = this$1.parseStatement(true);
- node.body.push(stmt);
- if (first && allowStrict && this$1.isUseStrict(stmt)) {
- oldStrict = this$1.strict;
- this$1.setStrict(this$1.strict = true);
- }
- first = false;
- }
- if (oldStrict === false) this.setStrict(false);
- return this.finishNode(node, "BlockStatement")
-};
-
-// Parse a regular `for` loop. The disambiguation code in
-// `parseStatement` will already have parsed the init statement or
-// expression.
-
-pp$1.parseFor = function(node, init) {
- node.init = init;
- this.expect(tt.semi);
- node.test = this.type === tt.semi ? null : this.parseExpression();
- this.expect(tt.semi);
- node.update = this.type === tt.parenR ? null : this.parseExpression();
- this.expect(tt.parenR);
- node.body = this.parseStatement(false);
- this.labels.pop();
- return this.finishNode(node, "ForStatement")
-};
-
-// Parse a `for`/`in` and `for`/`of` loop, which are almost
-// same from parser's perspective.
-
-pp$1.parseForIn = function(node, init) {
- var type = this.type === tt._in ? "ForInStatement" : "ForOfStatement";
- this.next();
- node.left = init;
- node.right = this.parseExpression();
- this.expect(tt.parenR);
- node.body = this.parseStatement(false);
- this.labels.pop();
- return this.finishNode(node, type)
-};
-
-// Parse a list of variable declarations.
-
-pp$1.parseVar = function(node, isFor, kind) {
- var this$1 = this;
-
- node.declarations = [];
- node.kind = kind;
- for (;;) {
- var decl = this$1.startNode();
- this$1.parseVarId(decl);
- if (this$1.eat(tt.eq)) {
- decl.init = this$1.parseMaybeAssign(isFor);
- } else if (kind === "const" && !(this$1.type === tt._in || (this$1.options.ecmaVersion >= 6 && this$1.isContextual("of")))) {
- this$1.unexpected();
- } else if (decl.id.type != "Identifier" && !(isFor && (this$1.type === tt._in || this$1.isContextual("of")))) {
- this$1.raise(this$1.lastTokEnd, "Complex binding patterns require an initialization value");
- } else {
- decl.init = null;
- }
- node.declarations.push(this$1.finishNode(decl, "VariableDeclarator"));
- if (!this$1.eat(tt.comma)) break
- }
- return node
-};
-
-pp$1.parseVarId = function(decl) {
- decl.id = this.parseBindingAtom();
- this.checkLVal(decl.id, true);
-};
-
-// Parse a function declaration or literal (depending on the
-// `isStatement` parameter).
-
-pp$1.parseFunction = function(node, isStatement, allowExpressionBody, isAsync) {
- this.initFunction(node);
- if (this.options.ecmaVersion >= 6 && !isAsync)
- node.generator = this.eat(tt.star);
- if (this.options.ecmaVersion >= 8)
- node.async = !!isAsync;
-
- if (isStatement)
- node.id = this.parseIdent();
-
- var oldInGen = this.inGenerator, oldInAsync = this.inAsync, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos;
- this.inGenerator = node.generator;
- this.inAsync = node.async;
- this.yieldPos = 0;
- this.awaitPos = 0;
-
- if (!isStatement && this.type === tt.name)
- node.id = this.parseIdent();
- this.parseFunctionParams(node);
- this.parseFunctionBody(node, allowExpressionBody);
-
- this.inGenerator = oldInGen;
- this.inAsync = oldInAsync;
- this.yieldPos = oldYieldPos;
- this.awaitPos = oldAwaitPos;
- return this.finishNode(node, isStatement ? "FunctionDeclaration" : "FunctionExpression")
-};
-
-pp$1.parseFunctionParams = function(node) {
- this.expect(tt.parenL);
- node.params = this.parseBindingList(tt.parenR, false, this.options.ecmaVersion >= 8, true);
- this.checkYieldAwaitInDefaultParams();
-};
-
-// Parse a class declaration or literal (depending on the
-// `isStatement` parameter).
-
-pp$1.parseClass = function(node, isStatement) {
- var this$1 = this;
-
- this.next();
- this.parseClassId(node, isStatement);
- this.parseClassSuper(node);
- var classBody = this.startNode();
- var hadConstructor = false;
- classBody.body = [];
- this.expect(tt.braceL);
- while (!this.eat(tt.braceR)) {
- if (this$1.eat(tt.semi)) continue
- var method = this$1.startNode();
- var isGenerator = this$1.eat(tt.star);
- var isAsync = false;
- var isMaybeStatic = this$1.type === tt.name && this$1.value === "static";
- this$1.parsePropertyName(method);
- method.static = isMaybeStatic && this$1.type !== tt.parenL;
- if (method.static) {
- if (isGenerator) this$1.unexpected();
- isGenerator = this$1.eat(tt.star);
- this$1.parsePropertyName(method);
- }
- if (this$1.options.ecmaVersion >= 8 && !isGenerator && !method.computed &&
- method.key.type === "Identifier" && method.key.name === "async" && this$1.type !== tt.parenL &&
- !this$1.canInsertSemicolon()) {
- isAsync = true;
- this$1.parsePropertyName(method);
- }
- method.kind = "method";
- var isGetSet = false;
- if (!method.computed) {
- var key = method.key;
- if (!isGenerator && !isAsync && key.type === "Identifier" && this$1.type !== tt.parenL && (key.name === "get" || key.name === "set")) {
- isGetSet = true;
- method.kind = key.name;
- key = this$1.parsePropertyName(method);
- }
- if (!method.static && (key.type === "Identifier" && key.name === "constructor" ||
- key.type === "Literal" && key.value === "constructor")) {
- if (hadConstructor) this$1.raise(key.start, "Duplicate constructor in the same class");
- if (isGetSet) this$1.raise(key.start, "Constructor can't have get/set modifier");
- if (isGenerator) this$1.raise(key.start, "Constructor can't be a generator");
- if (isAsync) this$1.raise(key.start, "Constructor can't be an async method");
- method.kind = "constructor";
- hadConstructor = true;
- }
- }
- this$1.parseClassMethod(classBody, method, isGenerator, isAsync);
- if (isGetSet) {
- var paramCount = method.kind === "get" ? 0 : 1;
- if (method.value.params.length !== paramCount) {
- var start = method.value.start;
- if (method.kind === "get")
- this$1.raiseRecoverable(start, "getter should have no params");
- else
- this$1.raiseRecoverable(start, "setter should have exactly one param");
- } else {
- if (method.kind === "set" && method.value.params[0].type === "RestElement")
- this$1.raiseRecoverable(method.value.params[0].start, "Setter cannot use rest params");
- }
- }
- }
- node.body = this.finishNode(classBody, "ClassBody");
- return this.finishNode(node, isStatement ? "ClassDeclaration" : "ClassExpression")
-};
-
-pp$1.parseClassMethod = function(classBody, method, isGenerator, isAsync) {
- method.value = this.parseMethod(isGenerator, isAsync);
- classBody.body.push(this.finishNode(method, "MethodDefinition"));
-};
-
-pp$1.parseClassId = function(node, isStatement) {
- node.id = this.type === tt.name ? this.parseIdent() : isStatement ? this.unexpected() : null;
-};
-
-pp$1.parseClassSuper = function(node) {
- node.superClass = this.eat(tt._extends) ? this.parseExprSubscripts() : null;
-};
-
-// Parses module export declaration.
-
-pp$1.parseExport = function(node, exports) {
- var this$1 = this;
-
- this.next();
- // export * from '...'
- if (this.eat(tt.star)) {
- this.expectContextual("from");
- node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected();
- this.semicolon();
- return this.finishNode(node, "ExportAllDeclaration")
- }
- if (this.eat(tt._default)) { // export default ...
- this.checkExport(exports, "default", this.lastTokStart);
- var parens = this.type == tt.parenL;
- var expr = this.parseMaybeAssign();
- var needsSemi = true;
- if (!parens && (expr.type == "FunctionExpression" ||
- expr.type == "ClassExpression")) {
- needsSemi = false;
- if (expr.id) {
- expr.type = expr.type == "FunctionExpression"
- ? "FunctionDeclaration"
- : "ClassDeclaration";
- }
- }
- node.declaration = expr;
- if (needsSemi) this.semicolon();
- return this.finishNode(node, "ExportDefaultDeclaration")
- }
- // export var|const|let|function|class ...
- if (this.shouldParseExportStatement()) {
- node.declaration = this.parseStatement(true);
- if (node.declaration.type === "VariableDeclaration")
- this.checkVariableExport(exports, node.declaration.declarations);
- else
- this.checkExport(exports, node.declaration.id.name, node.declaration.id.start);
- node.specifiers = [];
- node.source = null;
- } else { // export { x, y as z } [from '...']
- node.declaration = null;
- node.specifiers = this.parseExportSpecifiers(exports);
- if (this.eatContextual("from")) {
- node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected();
- } else {
- // check for keywords used as local names
- for (var i = 0; i < node.specifiers.length; i++) {
- if (this$1.keywords.test(node.specifiers[i].local.name) || this$1.reservedWords.test(node.specifiers[i].local.name)) {
- this$1.unexpected(node.specifiers[i].local.start);
- }
- }
-
- node.source = null;
- }
- this.semicolon();
- }
- return this.finishNode(node, "ExportNamedDeclaration")
-};
-
-pp$1.checkExport = function(exports, name, pos) {
- if (!exports) return
- if (Object.prototype.hasOwnProperty.call(exports, name))
- this.raiseRecoverable(pos, "Duplicate export '" + name + "'");
- exports[name] = true;
-};
-
-pp$1.checkPatternExport = function(exports, pat) {
- var this$1 = this;
-
- var type = pat.type;
- if (type == "Identifier")
- this.checkExport(exports, pat.name, pat.start);
- else if (type == "ObjectPattern")
- for (var i = 0; i < pat.properties.length; ++i)
- this$1.checkPatternExport(exports, pat.properties[i].value);
- else if (type == "ArrayPattern")
- for (var i$1 = 0; i$1 < pat.elements.length; ++i$1) {
- var elt = pat.elements[i$1];
- if (elt) this$1.checkPatternExport(exports, elt);
- }
- else if (type == "AssignmentPattern")
- this.checkPatternExport(exports, pat.left);
- else if (type == "ParenthesizedExpression")
- this.checkPatternExport(exports, pat.expression);
-};
-
-pp$1.checkVariableExport = function(exports, decls) {
- var this$1 = this;
-
- if (!exports) return
- for (var i = 0; i < decls.length; i++)
- this$1.checkPatternExport(exports, decls[i].id);
-};
-
-pp$1.shouldParseExportStatement = function() {
- return this.type.keyword || this.isLet() || this.isAsyncFunction()
-};
-
-// Parses a comma-separated list of module exports.
-
-pp$1.parseExportSpecifiers = function(exports) {
- var this$1 = this;
-
- var nodes = [], first = true;
- // export { x, y as z } [from '...']
- this.expect(tt.braceL);
- while (!this.eat(tt.braceR)) {
- if (!first) {
- this$1.expect(tt.comma);
- if (this$1.afterTrailingComma(tt.braceR)) break
- } else first = false;
-
- var node = this$1.startNode();
- node.local = this$1.parseIdent(this$1.type === tt._default);
- node.exported = this$1.eatContextual("as") ? this$1.parseIdent(true) : node.local;
- this$1.checkExport(exports, node.exported.name, node.exported.start);
- nodes.push(this$1.finishNode(node, "ExportSpecifier"));
- }
- return nodes
-};
-
-// Parses import declaration.
-
-pp$1.parseImport = function(node) {
- this.next();
- // import '...'
- if (this.type === tt.string) {
- node.specifiers = empty;
- node.source = this.parseExprAtom();
- } else {
- node.specifiers = this.parseImportSpecifiers();
- this.expectContextual("from");
- node.source = this.type === tt.string ? this.parseExprAtom() : this.unexpected();
- }
- this.semicolon();
- return this.finishNode(node, "ImportDeclaration")
-};
-
-// Parses a comma-separated list of module imports.
-
-pp$1.parseImportSpecifiers = function() {
- var this$1 = this;
-
- var nodes = [], first = true;
- if (this.type === tt.name) {
- // import defaultObj, { x, y as z } from '...'
- var node = this.startNode();
- node.local = this.parseIdent();
- this.checkLVal(node.local, true);
- nodes.push(this.finishNode(node, "ImportDefaultSpecifier"));
- if (!this.eat(tt.comma)) return nodes
- }
- if (this.type === tt.star) {
- var node$1 = this.startNode();
- this.next();
- this.expectContextual("as");
- node$1.local = this.parseIdent();
- this.checkLVal(node$1.local, true);
- nodes.push(this.finishNode(node$1, "ImportNamespaceSpecifier"));
- return nodes
- }
- this.expect(tt.braceL);
- while (!this.eat(tt.braceR)) {
- if (!first) {
- this$1.expect(tt.comma);
- if (this$1.afterTrailingComma(tt.braceR)) break
- } else first = false;
-
- var node$2 = this$1.startNode();
- node$2.imported = this$1.parseIdent(true);
- if (this$1.eatContextual("as")) {
- node$2.local = this$1.parseIdent();
- } else {
- node$2.local = node$2.imported;
- if (this$1.isKeyword(node$2.local.name)) this$1.unexpected(node$2.local.start);
- if (this$1.reservedWordsStrict.test(node$2.local.name)) this$1.raiseRecoverable(node$2.local.start, "The keyword '" + node$2.local.name + "' is reserved");
- }
- this$1.checkLVal(node$2.local, true);
- nodes.push(this$1.finishNode(node$2, "ImportSpecifier"));
- }
- return nodes
-};
-
-var pp$2 = Parser.prototype;
-
-// Convert existing expression atom to assignable pattern
-// if possible.
-
-pp$2.toAssignable = function(node, isBinding) {
- var this$1 = this;
-
- if (this.options.ecmaVersion >= 6 && node) {
- switch (node.type) {
- case "Identifier":
- if (this.inAsync && node.name === "await")
- this.raise(node.start, "Can not use 'await' as identifier inside an async function");
- break
-
- case "ObjectPattern":
- case "ArrayPattern":
- break
-
- case "ObjectExpression":
- node.type = "ObjectPattern";
- for (var i = 0; i < node.properties.length; i++) {
- var prop = node.properties[i];
- if (prop.kind !== "init") this$1.raise(prop.key.start, "Object pattern can't contain getter or setter");
- this$1.toAssignable(prop.value, isBinding);
- }
- break
-
- case "ArrayExpression":
- node.type = "ArrayPattern";
- this.toAssignableList(node.elements, isBinding);
- break
-
- case "AssignmentExpression":
- if (node.operator === "=") {
- node.type = "AssignmentPattern";
- delete node.operator;
- this.toAssignable(node.left, isBinding);
- // falls through to AssignmentPattern
- } else {
- this.raise(node.left.end, "Only '=' operator can be used for specifying default value.");
- break
- }
-
- case "AssignmentPattern":
- break
-
- case "ParenthesizedExpression":
- node.expression = this.toAssignable(node.expression, isBinding);
- break
-
- case "MemberExpression":
- if (!isBinding) break
-
- default:
- this.raise(node.start, "Assigning to rvalue");
- }
- }
- return node
-};
-
-// Convert list of expression atoms to binding list.
-
-pp$2.toAssignableList = function(exprList, isBinding) {
- var this$1 = this;
-
- var end = exprList.length;
- if (end) {
- var last = exprList[end - 1];
- if (last && last.type == "RestElement") {
- --end;
- } else if (last && last.type == "SpreadElement") {
- last.type = "RestElement";
- var arg = last.argument;
- this.toAssignable(arg, isBinding);
- if (arg.type !== "Identifier" && arg.type !== "MemberExpression" && arg.type !== "ArrayPattern")
- this.unexpected(arg.start);
- --end;
- }
-
- if (isBinding && last && last.type === "RestElement" && last.argument.type !== "Identifier")
- this.unexpected(last.argument.start);
- }
- for (var i = 0; i < end; i++) {
- var elt = exprList[i];
- if (elt) this$1.toAssignable(elt, isBinding);
- }
- return exprList
-};
-
-// Parses spread element.
-
-pp$2.parseSpread = function(refDestructuringErrors) {
- var node = this.startNode();
- this.next();
- node.argument = this.parseMaybeAssign(false, refDestructuringErrors);
- return this.finishNode(node, "SpreadElement")
-};
-
-pp$2.parseRest = function(allowNonIdent) {
- var node = this.startNode();
- this.next();
-
- // RestElement inside of a function parameter must be an identifier
- if (allowNonIdent) node.argument = this.type === tt.name ? this.parseIdent() : this.unexpected();
- else node.argument = this.type === tt.name || this.type === tt.bracketL ? this.parseBindingAtom() : this.unexpected();
-
- return this.finishNode(node, "RestElement")
-};
-
-// Parses lvalue (assignable) atom.
-
-pp$2.parseBindingAtom = function() {
- if (this.options.ecmaVersion < 6) return this.parseIdent()
- switch (this.type) {
- case tt.name:
- return this.parseIdent()
-
- case tt.bracketL:
- var node = this.startNode();
- this.next();
- node.elements = this.parseBindingList(tt.bracketR, true, true);
- return this.finishNode(node, "ArrayPattern")
-
- case tt.braceL:
- return this.parseObj(true)
-
- default:
- this.unexpected();
- }
-};
-
-pp$2.parseBindingList = function(close, allowEmpty, allowTrailingComma, allowNonIdent) {
- var this$1 = this;
-
- var elts = [], first = true;
- while (!this.eat(close)) {
- if (first) first = false;
- else this$1.expect(tt.comma);
- if (allowEmpty && this$1.type === tt.comma) {
- elts.push(null);
- } else if (allowTrailingComma && this$1.afterTrailingComma(close)) {
- break
- } else if (this$1.type === tt.ellipsis) {
- var rest = this$1.parseRest(allowNonIdent);
- this$1.parseBindingListItem(rest);
- elts.push(rest);
- if (this$1.type === tt.comma) this$1.raise(this$1.start, "Comma is not permitted after the rest element");
- this$1.expect(close);
- break
- } else {
- var elem = this$1.parseMaybeDefault(this$1.start, this$1.startLoc);
- this$1.parseBindingListItem(elem);
- elts.push(elem);
- }
- }
- return elts
-};
-
-pp$2.parseBindingListItem = function(param) {
- return param
-};
-
-// Parses assignment pattern around given atom if possible.
-
-pp$2.parseMaybeDefault = function(startPos, startLoc, left) {
- left = left || this.parseBindingAtom();
- if (this.options.ecmaVersion < 6 || !this.eat(tt.eq)) return left
- var node = this.startNodeAt(startPos, startLoc);
- node.left = left;
- node.right = this.parseMaybeAssign();
- return this.finishNode(node, "AssignmentPattern")
-};
-
-// Verify that a node is an lval — something that can be assigned
-// to.
-
-pp$2.checkLVal = function(expr, isBinding, checkClashes) {
- var this$1 = this;
-
- switch (expr.type) {
- case "Identifier":
- if (this.strict && this.reservedWordsStrictBind.test(expr.name))
- this.raiseRecoverable(expr.start, (isBinding ? "Binding " : "Assigning to ") + expr.name + " in strict mode");
- if (checkClashes) {
- if (has(checkClashes, expr.name))
- this.raiseRecoverable(expr.start, "Argument name clash");
- checkClashes[expr.name] = true;
- }
- break
-
- case "MemberExpression":
- if (isBinding) this.raiseRecoverable(expr.start, (isBinding ? "Binding" : "Assigning to") + " member expression");
- break
-
- case "ObjectPattern":
- for (var i = 0; i < expr.properties.length; i++)
- this$1.checkLVal(expr.properties[i].value, isBinding, checkClashes);
- break
-
- case "ArrayPattern":
- for (var i$1 = 0; i$1 < expr.elements.length; i$1++) {
- var elem = expr.elements[i$1];
- if (elem) this$1.checkLVal(elem, isBinding, checkClashes);
- }
- break
-
- case "AssignmentPattern":
- this.checkLVal(expr.left, isBinding, checkClashes);
- break
-
- case "RestElement":
- this.checkLVal(expr.argument, isBinding, checkClashes);
- break
-
- case "ParenthesizedExpression":
- this.checkLVal(expr.expression, isBinding, checkClashes);
- break
-
- default:
- this.raise(expr.start, (isBinding ? "Binding" : "Assigning to") + " rvalue");
- }
-};
-
-var pp$3 = Parser.prototype;
-
-// Check if property name clashes with already added.
-// Object/class getters and setters are not allowed to clash —
-// either with each other or with an init property — and in
-// strict mode, init properties are also not allowed to be repeated.
-
-pp$3.checkPropClash = function(prop, propHash) {
- if (this.options.ecmaVersion >= 6 && (prop.computed || prop.method || prop.shorthand))
- return
- var key = prop.key;
- var name;
- switch (key.type) {
- case "Identifier": name = key.name; break
- case "Literal": name = String(key.value); break
- default: return
- }
- var kind = prop.kind;
- if (this.options.ecmaVersion >= 6) {
- if (name === "__proto__" && kind === "init") {
- if (propHash.proto) this.raiseRecoverable(key.start, "Redefinition of __proto__ property");
- propHash.proto = true;
- }
- return
- }
- name = "$" + name;
- var other = propHash[name];
- if (other) {
- var isGetSet = kind !== "init";
- if ((this.strict || isGetSet) && other[kind] || !(isGetSet ^ other.init))
- this.raiseRecoverable(key.start, "Redefinition of property");
- } else {
- other = propHash[name] = {
- init: false,
- get: false,
- set: false
- };
- }
- other[kind] = true;
-};
-
-// ### Expression parsing
-
-// These nest, from the most general expression type at the top to
-// 'atomic', nondivisible expression types at the bottom. Most of
-// the functions will simply let the function(s) below them parse,
-// and, *if* the syntactic construct they handle is present, wrap
-// the AST node that the inner parser gave them in another node.
-
-// Parse a full expression. The optional arguments are used to
-// forbid the `in` operator (in for loops initalization expressions)
-// and provide reference for storing '=' operator inside shorthand
-// property assignment in contexts where both object expression
-// and object pattern might appear (so it's possible to raise
-// delayed syntax error at correct position).
-
-pp$3.parseExpression = function(noIn, refDestructuringErrors) {
- var this$1 = this;
-
- var startPos = this.start, startLoc = this.startLoc;
- var expr = this.parseMaybeAssign(noIn, refDestructuringErrors);
- if (this.type === tt.comma) {
- var node = this.startNodeAt(startPos, startLoc);
- node.expressions = [expr];
- while (this.eat(tt.comma)) node.expressions.push(this$1.parseMaybeAssign(noIn, refDestructuringErrors));
- return this.finishNode(node, "SequenceExpression")
- }
- return expr
-};
-
-// Parse an assignment expression. This includes applications of
-// operators like `+=`.
-
-pp$3.parseMaybeAssign = function(noIn, refDestructuringErrors, afterLeftParse) {
- if (this.inGenerator && this.isContextual("yield")) return this.parseYield()
-
- var ownDestructuringErrors = false;
- if (!refDestructuringErrors) {
- refDestructuringErrors = new DestructuringErrors;
- ownDestructuringErrors = true;
- }
- var startPos = this.start, startLoc = this.startLoc;
- if (this.type == tt.parenL || this.type == tt.name)
- this.potentialArrowAt = this.start;
- var left = this.parseMaybeConditional(noIn, refDestructuringErrors);
- if (afterLeftParse) left = afterLeftParse.call(this, left, startPos, startLoc);
- if (this.type.isAssign) {
- this.checkPatternErrors(refDestructuringErrors, true);
- if (!ownDestructuringErrors) DestructuringErrors.call(refDestructuringErrors);
- var node = this.startNodeAt(startPos, startLoc);
- node.operator = this.value;
- node.left = this.type === tt.eq ? this.toAssignable(left) : left;
- refDestructuringErrors.shorthandAssign = 0; // reset because shorthand default was used correctly
- this.checkLVal(left);
- this.next();
- node.right = this.parseMaybeAssign(noIn);
- return this.finishNode(node, "AssignmentExpression")
- } else {
- if (ownDestructuringErrors) this.checkExpressionErrors(refDestructuringErrors, true);
- }
- return left
-};
-
-// Parse a ternary conditional (`?:`) operator.
-
-pp$3.parseMaybeConditional = function(noIn, refDestructuringErrors) {
- var startPos = this.start, startLoc = this.startLoc;
- var expr = this.parseExprOps(noIn, refDestructuringErrors);
- if (this.checkExpressionErrors(refDestructuringErrors)) return expr
- if (this.eat(tt.question)) {
- var node = this.startNodeAt(startPos, startLoc);
- node.test = expr;
- node.consequent = this.parseMaybeAssign();
- this.expect(tt.colon);
- node.alternate = this.parseMaybeAssign(noIn);
- return this.finishNode(node, "ConditionalExpression")
- }
- return expr
-};
-
-// Start the precedence parser.
-
-pp$3.parseExprOps = function(noIn, refDestructuringErrors) {
- var startPos = this.start, startLoc = this.startLoc;
- var expr = this.parseMaybeUnary(refDestructuringErrors, false);
- if (this.checkExpressionErrors(refDestructuringErrors)) return expr
- return this.parseExprOp(expr, startPos, startLoc, -1, noIn)
-};
-
-// Parse binary operators with the operator precedence parsing
-// algorithm. `left` is the left-hand side of the operator.
-// `minPrec` provides context that allows the function to stop and
-// defer further parser to one of its callers when it encounters an
-// operator that has a lower precedence than the set it is parsing.
-
-pp$3.parseExprOp = function(left, leftStartPos, leftStartLoc, minPrec, noIn) {
- var prec = this.type.binop;
- if (prec != null && (!noIn || this.type !== tt._in)) {
- if (prec > minPrec) {
- var logical = this.type === tt.logicalOR || this.type === tt.logicalAND;
- var op = this.value;
- this.next();
- var startPos = this.start, startLoc = this.startLoc;
- var right = this.parseExprOp(this.parseMaybeUnary(null, false), startPos, startLoc, prec, noIn);
- var node = this.buildBinary(leftStartPos, leftStartLoc, left, right, op, logical);
- return this.parseExprOp(node, leftStartPos, leftStartLoc, minPrec, noIn)
- }
- }
- return left
-};
-
-pp$3.buildBinary = function(startPos, startLoc, left, right, op, logical) {
- var node = this.startNodeAt(startPos, startLoc);
- node.left = left;
- node.operator = op;
- node.right = right;
- return this.finishNode(node, logical ? "LogicalExpression" : "BinaryExpression")
-};
-
-// Parse unary operators, both prefix and postfix.
-
-pp$3.parseMaybeUnary = function(refDestructuringErrors, sawUnary) {
- var this$1 = this;
-
- var startPos = this.start, startLoc = this.startLoc, expr;
- if (this.inAsync && this.isContextual("await")) {
- expr = this.parseAwait(refDestructuringErrors);
- sawUnary = true;
- } else if (this.type.prefix) {
- var node = this.startNode(), update = this.type === tt.incDec;
- node.operator = this.value;
- node.prefix = true;
- this.next();
- node.argument = this.parseMaybeUnary(null, true);
- this.checkExpressionErrors(refDestructuringErrors, true);
- if (update) this.checkLVal(node.argument);
- else if (this.strict && node.operator === "delete" &&
- node.argument.type === "Identifier")
- this.raiseRecoverable(node.start, "Deleting local variable in strict mode");
- else sawUnary = true;
- expr = this.finishNode(node, update ? "UpdateExpression" : "UnaryExpression");
- } else {
- expr = this.parseExprSubscripts(refDestructuringErrors);
- if (this.checkExpressionErrors(refDestructuringErrors)) return expr
- while (this.type.postfix && !this.canInsertSemicolon()) {
- var node$1 = this$1.startNodeAt(startPos, startLoc);
- node$1.operator = this$1.value;
- node$1.prefix = false;
- node$1.argument = expr;
- this$1.checkLVal(expr);
- this$1.next();
- expr = this$1.finishNode(node$1, "UpdateExpression");
- }
- }
-
- if (!sawUnary && this.eat(tt.starstar))
- return this.buildBinary(startPos, startLoc, expr, this.parseMaybeUnary(null, false), "**", false)
- else
- return expr
-};
-
-// Parse call, dot, and `[]`-subscript expressions.
-
-pp$3.parseExprSubscripts = function(refDestructuringErrors) {
- var startPos = this.start, startLoc = this.startLoc;
- var expr = this.parseExprAtom(refDestructuringErrors);
- var skipArrowSubscripts = expr.type === "ArrowFunctionExpression" && this.input.slice(this.lastTokStart, this.lastTokEnd) !== ")";
- if (this.checkExpressionErrors(refDestructuringErrors) || skipArrowSubscripts) return expr
- return this.parseSubscripts(expr, startPos, startLoc)
-};
-
-pp$3.parseSubscripts = function(base, startPos, startLoc, noCalls) {
- var this$1 = this;
-
- for (;;) {
- var maybeAsyncArrow = this$1.options.ecmaVersion >= 8 && base.type === "Identifier" && base.name === "async" && !this$1.canInsertSemicolon();
- if (this$1.eat(tt.dot)) {
- var node = this$1.startNodeAt(startPos, startLoc);
- node.object = base;
- node.property = this$1.parseIdent(true);
- node.computed = false;
- base = this$1.finishNode(node, "MemberExpression");
- } else if (this$1.eat(tt.bracketL)) {
- var node$1 = this$1.startNodeAt(startPos, startLoc);
- node$1.object = base;
- node$1.property = this$1.parseExpression();
- node$1.computed = true;
- this$1.expect(tt.bracketR);
- base = this$1.finishNode(node$1, "MemberExpression");
- } else if (!noCalls && this$1.eat(tt.parenL)) {
- var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this$1.yieldPos, oldAwaitPos = this$1.awaitPos;
- this$1.yieldPos = 0;
- this$1.awaitPos = 0;
- var exprList = this$1.parseExprList(tt.parenR, this$1.options.ecmaVersion >= 8, false, refDestructuringErrors);
- if (maybeAsyncArrow && !this$1.canInsertSemicolon() && this$1.eat(tt.arrow)) {
- this$1.checkPatternErrors(refDestructuringErrors, true);
- this$1.checkYieldAwaitInDefaultParams();
- this$1.yieldPos = oldYieldPos;
- this$1.awaitPos = oldAwaitPos;
- return this$1.parseArrowExpression(this$1.startNodeAt(startPos, startLoc), exprList, true)
- }
- this$1.checkExpressionErrors(refDestructuringErrors, true);
- this$1.yieldPos = oldYieldPos || this$1.yieldPos;
- this$1.awaitPos = oldAwaitPos || this$1.awaitPos;
- var node$2 = this$1.startNodeAt(startPos, startLoc);
- node$2.callee = base;
- node$2.arguments = exprList;
- base = this$1.finishNode(node$2, "CallExpression");
- } else if (this$1.type === tt.backQuote) {
- var node$3 = this$1.startNodeAt(startPos, startLoc);
- node$3.tag = base;
- node$3.quasi = this$1.parseTemplate();
- base = this$1.finishNode(node$3, "TaggedTemplateExpression");
- } else {
- return base
- }
- }
-};
-
-// Parse an atomic expression — either a single token that is an
-// expression, an expression started by a keyword like `function` or
-// `new`, or an expression wrapped in punctuation like `()`, `[]`,
-// or `{}`.
-
-pp$3.parseExprAtom = function(refDestructuringErrors) {
- var node, canBeArrow = this.potentialArrowAt == this.start;
- switch (this.type) {
- case tt._super:
- if (!this.inFunction)
- this.raise(this.start, "'super' outside of function or class");
-
- case tt._this:
- var type = this.type === tt._this ? "ThisExpression" : "Super";
- node = this.startNode();
- this.next();
- return this.finishNode(node, type)
-
- case tt.name:
- var startPos = this.start, startLoc = this.startLoc;
- var id = this.parseIdent(this.type !== tt.name);
- if (this.options.ecmaVersion >= 8 && id.name === "async" && !this.canInsertSemicolon() && this.eat(tt._function))
- return this.parseFunction(this.startNodeAt(startPos, startLoc), false, false, true)
- if (canBeArrow && !this.canInsertSemicolon()) {
- if (this.eat(tt.arrow))
- return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], false)
- if (this.options.ecmaVersion >= 8 && id.name === "async" && this.type === tt.name) {
- id = this.parseIdent();
- if (this.canInsertSemicolon() || !this.eat(tt.arrow))
- this.unexpected();
- return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), [id], true)
- }
- }
- return id
-
- case tt.regexp:
- var value = this.value;
- node = this.parseLiteral(value.value);
- node.regex = {pattern: value.pattern, flags: value.flags};
- return node
-
- case tt.num: case tt.string:
- return this.parseLiteral(this.value)
-
- case tt._null: case tt._true: case tt._false:
- node = this.startNode();
- node.value = this.type === tt._null ? null : this.type === tt._true;
- node.raw = this.type.keyword;
- this.next();
- return this.finishNode(node, "Literal")
-
- case tt.parenL:
- return this.parseParenAndDistinguishExpression(canBeArrow)
-
- case tt.bracketL:
- node = this.startNode();
- this.next();
- node.elements = this.parseExprList(tt.bracketR, true, true, refDestructuringErrors);
- return this.finishNode(node, "ArrayExpression")
-
- case tt.braceL:
- return this.parseObj(false, refDestructuringErrors)
-
- case tt._function:
- node = this.startNode();
- this.next();
- return this.parseFunction(node, false)
-
- case tt._class:
- return this.parseClass(this.startNode(), false)
-
- case tt._new:
- return this.parseNew()
-
- case tt.backQuote:
- return this.parseTemplate()
-
- default:
- this.unexpected();
- }
-};
-
-pp$3.parseLiteral = function(value) {
- var node = this.startNode();
- node.value = value;
- node.raw = this.input.slice(this.start, this.end);
- this.next();
- return this.finishNode(node, "Literal")
-};
-
-pp$3.parseParenExpression = function() {
- this.expect(tt.parenL);
- var val = this.parseExpression();
- this.expect(tt.parenR);
- return val
-};
-
-pp$3.parseParenAndDistinguishExpression = function(canBeArrow) {
- var this$1 = this;
-
- var startPos = this.start, startLoc = this.startLoc, val, allowTrailingComma = this.options.ecmaVersion >= 8;
- if (this.options.ecmaVersion >= 6) {
- this.next();
-
- var innerStartPos = this.start, innerStartLoc = this.startLoc;
- var exprList = [], first = true, lastIsComma = false;
- var refDestructuringErrors = new DestructuringErrors, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos, spreadStart, innerParenStart;
- this.yieldPos = 0;
- this.awaitPos = 0;
- while (this.type !== tt.parenR) {
- first ? first = false : this$1.expect(tt.comma);
- if (allowTrailingComma && this$1.afterTrailingComma(tt.parenR, true)) {
- lastIsComma = true;
- break
- } else if (this$1.type === tt.ellipsis) {
- spreadStart = this$1.start;
- exprList.push(this$1.parseParenItem(this$1.parseRest()));
- if (this$1.type === tt.comma) this$1.raise(this$1.start, "Comma is not permitted after the rest element");
- break
- } else {
- if (this$1.type === tt.parenL && !innerParenStart) {
- innerParenStart = this$1.start;
- }
- exprList.push(this$1.parseMaybeAssign(false, refDestructuringErrors, this$1.parseParenItem));
- }
- }
- var innerEndPos = this.start, innerEndLoc = this.startLoc;
- this.expect(tt.parenR);
-
- if (canBeArrow && !this.canInsertSemicolon() && this.eat(tt.arrow)) {
- this.checkPatternErrors(refDestructuringErrors, true);
- this.checkYieldAwaitInDefaultParams();
- if (innerParenStart) this.unexpected(innerParenStart);
- this.yieldPos = oldYieldPos;
- this.awaitPos = oldAwaitPos;
- return this.parseParenArrowList(startPos, startLoc, exprList)
- }
-
- if (!exprList.length || lastIsComma) this.unexpected(this.lastTokStart);
- if (spreadStart) this.unexpected(spreadStart);
- this.checkExpressionErrors(refDestructuringErrors, true);
- this.yieldPos = oldYieldPos || this.yieldPos;
- this.awaitPos = oldAwaitPos || this.awaitPos;
-
- if (exprList.length > 1) {
- val = this.startNodeAt(innerStartPos, innerStartLoc);
- val.expressions = exprList;
- this.finishNodeAt(val, "SequenceExpression", innerEndPos, innerEndLoc);
- } else {
- val = exprList[0];
- }
- } else {
- val = this.parseParenExpression();
- }
-
- if (this.options.preserveParens) {
- var par = this.startNodeAt(startPos, startLoc);
- par.expression = val;
- return this.finishNode(par, "ParenthesizedExpression")
- } else {
- return val
- }
-};
-
-pp$3.parseParenItem = function(item) {
- return item
-};
-
-pp$3.parseParenArrowList = function(startPos, startLoc, exprList) {
- return this.parseArrowExpression(this.startNodeAt(startPos, startLoc), exprList)
-};
-
-// New's precedence is slightly tricky. It must allow its argument to
-// be a `[]` or dot subscript expression, but not a call — at least,
-// not without wrapping it in parentheses. Thus, it uses the noCalls
-// argument to parseSubscripts to prevent it from consuming the
-// argument list.
-
-var empty$1 = [];
-
-pp$3.parseNew = function() {
- var node = this.startNode();
- var meta = this.parseIdent(true);
- if (this.options.ecmaVersion >= 6 && this.eat(tt.dot)) {
- node.meta = meta;
- node.property = this.parseIdent(true);
- if (node.property.name !== "target")
- this.raiseRecoverable(node.property.start, "The only valid meta property for new is new.target");
- if (!this.inFunction)
- this.raiseRecoverable(node.start, "new.target can only be used in functions");
- return this.finishNode(node, "MetaProperty")
- }
- var startPos = this.start, startLoc = this.startLoc;
- node.callee = this.parseSubscripts(this.parseExprAtom(), startPos, startLoc, true);
- if (this.eat(tt.parenL)) node.arguments = this.parseExprList(tt.parenR, this.options.ecmaVersion >= 8, false);
- else node.arguments = empty$1;
- return this.finishNode(node, "NewExpression")
-};
-
-// Parse template expression.
-
-pp$3.parseTemplateElement = function() {
- var elem = this.startNode();
- elem.value = {
- raw: this.input.slice(this.start, this.end).replace(/\r\n?/g, '\n'),
- cooked: this.value
- };
- this.next();
- elem.tail = this.type === tt.backQuote;
- return this.finishNode(elem, "TemplateElement")
-};
-
-pp$3.parseTemplate = function() {
- var this$1 = this;
-
- var node = this.startNode();
- this.next();
- node.expressions = [];
- var curElt = this.parseTemplateElement();
- node.quasis = [curElt];
- while (!curElt.tail) {
- this$1.expect(tt.dollarBraceL);
- node.expressions.push(this$1.parseExpression());
- this$1.expect(tt.braceR);
- node.quasis.push(curElt = this$1.parseTemplateElement());
- }
- this.next();
- return this.finishNode(node, "TemplateLiteral")
-};
-
-// Parse an object literal or binding pattern.
-
-pp$3.parseObj = function(isPattern, refDestructuringErrors) {
- var this$1 = this;
-
- var node = this.startNode(), first = true, propHash = {};
- node.properties = [];
- this.next();
- while (!this.eat(tt.braceR)) {
- if (!first) {
- this$1.expect(tt.comma);
- if (this$1.afterTrailingComma(tt.braceR)) break
- } else first = false;
-
- var prop = this$1.startNode(), isGenerator, isAsync, startPos, startLoc;
- if (this$1.options.ecmaVersion >= 6) {
- prop.method = false;
- prop.shorthand = false;
- if (isPattern || refDestructuringErrors) {
- startPos = this$1.start;
- startLoc = this$1.startLoc;
- }
- if (!isPattern)
- isGenerator = this$1.eat(tt.star);
- }
- this$1.parsePropertyName(prop);
- if (!isPattern && this$1.options.ecmaVersion >= 8 && !isGenerator && !prop.computed &&
- prop.key.type === "Identifier" && prop.key.name === "async" && this$1.type !== tt.parenL &&
- this$1.type !== tt.colon && !this$1.canInsertSemicolon()) {
- isAsync = true;
- this$1.parsePropertyName(prop, refDestructuringErrors);
- } else {
- isAsync = false;
- }
- this$1.parsePropertyValue(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors);
- this$1.checkPropClash(prop, propHash);
- node.properties.push(this$1.finishNode(prop, "Property"));
- }
- return this.finishNode(node, isPattern ? "ObjectPattern" : "ObjectExpression")
-};
-
-pp$3.parsePropertyValue = function(prop, isPattern, isGenerator, isAsync, startPos, startLoc, refDestructuringErrors) {
- if ((isGenerator || isAsync) && this.type === tt.colon)
- this.unexpected();
-
- if (this.eat(tt.colon)) {
- prop.value = isPattern ? this.parseMaybeDefault(this.start, this.startLoc) : this.parseMaybeAssign(false, refDestructuringErrors);
- prop.kind = "init";
- } else if (this.options.ecmaVersion >= 6 && this.type === tt.parenL) {
- if (isPattern) this.unexpected();
- prop.kind = "init";
- prop.method = true;
- prop.value = this.parseMethod(isGenerator, isAsync);
- } else if (this.options.ecmaVersion >= 5 && !prop.computed && prop.key.type === "Identifier" &&
- (prop.key.name === "get" || prop.key.name === "set") &&
- (this.type != tt.comma && this.type != tt.braceR)) {
- if (isGenerator || isAsync || isPattern) this.unexpected();
- prop.kind = prop.key.name;
- this.parsePropertyName(prop);
- prop.value = this.parseMethod(false);
- var paramCount = prop.kind === "get" ? 0 : 1;
- if (prop.value.params.length !== paramCount) {
- var start = prop.value.start;
- if (prop.kind === "get")
- this.raiseRecoverable(start, "getter should have no params");
- else
- this.raiseRecoverable(start, "setter should have exactly one param");
- } else {
- if (prop.kind === "set" && prop.value.params[0].type === "RestElement")
- this.raiseRecoverable(prop.value.params[0].start, "Setter cannot use rest params");
- }
- } else if (this.options.ecmaVersion >= 6 && !prop.computed && prop.key.type === "Identifier") {
- if (this.keywords.test(prop.key.name) ||
- (this.strict ? this.reservedWordsStrict : this.reservedWords).test(prop.key.name) ||
- (this.inGenerator && prop.key.name == "yield") ||
- (this.inAsync && prop.key.name == "await"))
- this.raiseRecoverable(prop.key.start, "'" + prop.key.name + "' can not be used as shorthand property");
- prop.kind = "init";
- if (isPattern) {
- prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key);
- } else if (this.type === tt.eq && refDestructuringErrors) {
- if (!refDestructuringErrors.shorthandAssign)
- refDestructuringErrors.shorthandAssign = this.start;
- prop.value = this.parseMaybeDefault(startPos, startLoc, prop.key);
- } else {
- prop.value = prop.key;
- }
- prop.shorthand = true;
- } else this.unexpected();
-};
-
-pp$3.parsePropertyName = function(prop) {
- if (this.options.ecmaVersion >= 6) {
- if (this.eat(tt.bracketL)) {
- prop.computed = true;
- prop.key = this.parseMaybeAssign();
- this.expect(tt.bracketR);
- return prop.key
- } else {
- prop.computed = false;
- }
- }
- return prop.key = this.type === tt.num || this.type === tt.string ? this.parseExprAtom() : this.parseIdent(true)
-};
-
-// Initialize empty function node.
-
-pp$3.initFunction = function(node) {
- node.id = null;
- if (this.options.ecmaVersion >= 6) {
- node.generator = false;
- node.expression = false;
- }
- if (this.options.ecmaVersion >= 8)
- node.async = false;
-};
-
-// Parse object or class method.
-
-pp$3.parseMethod = function(isGenerator, isAsync) {
- var node = this.startNode(), oldInGen = this.inGenerator, oldInAsync = this.inAsync, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos;
-
- this.initFunction(node);
- if (this.options.ecmaVersion >= 6)
- node.generator = isGenerator;
- if (this.options.ecmaVersion >= 8)
- node.async = !!isAsync;
-
- this.inGenerator = node.generator;
- this.inAsync = node.async;
- this.yieldPos = 0;
- this.awaitPos = 0;
-
- this.expect(tt.parenL);
- node.params = this.parseBindingList(tt.parenR, false, this.options.ecmaVersion >= 8);
- this.checkYieldAwaitInDefaultParams();
- this.parseFunctionBody(node, false);
-
- this.inGenerator = oldInGen;
- this.inAsync = oldInAsync;
- this.yieldPos = oldYieldPos;
- this.awaitPos = oldAwaitPos;
- return this.finishNode(node, "FunctionExpression")
-};
-
-// Parse arrow function expression with given parameters.
-
-pp$3.parseArrowExpression = function(node, params, isAsync) {
- var oldInGen = this.inGenerator, oldInAsync = this.inAsync, oldYieldPos = this.yieldPos, oldAwaitPos = this.awaitPos;
-
- this.initFunction(node);
- if (this.options.ecmaVersion >= 8)
- node.async = !!isAsync;
-
- this.inGenerator = false;
- this.inAsync = node.async;
- this.yieldPos = 0;
- this.awaitPos = 0;
-
- node.params = this.toAssignableList(params, true);
- this.parseFunctionBody(node, true);
-
- this.inGenerator = oldInGen;
- this.inAsync = oldInAsync;
- this.yieldPos = oldYieldPos;
- this.awaitPos = oldAwaitPos;
- return this.finishNode(node, "ArrowFunctionExpression")
-};
-
-// Parse function body and check parameters.
-
-pp$3.parseFunctionBody = function(node, isArrowFunction) {
- var isExpression = isArrowFunction && this.type !== tt.braceL;
-
- if (isExpression) {
- node.body = this.parseMaybeAssign();
- node.expression = true;
- } else {
- // Start a new scope with regard to labels and the `inFunction`
- // flag (restore them to their old value afterwards).
- var oldInFunc = this.inFunction, oldLabels = this.labels;
- this.inFunction = true; this.labels = [];
- node.body = this.parseBlock(true);
- node.expression = false;
- this.inFunction = oldInFunc; this.labels = oldLabels;
- }
-
- // If this is a strict mode function, verify that argument names
- // are not repeated, and it does not try to bind the words `eval`
- // or `arguments`.
- var useStrict = (!isExpression && node.body.body.length && this.isUseStrict(node.body.body[0])) ? node.body.body[0] : null;
- if (useStrict && this.options.ecmaVersion >= 7 && !this.isSimpleParamList(node.params))
- this.raiseRecoverable(useStrict.start, "Illegal 'use strict' directive in function with non-simple parameter list");
-
- if (this.strict || useStrict) {
- var oldStrict = this.strict;
- this.strict = true;
- if (node.id)
- this.checkLVal(node.id, true);
- this.checkParams(node);
- this.strict = oldStrict;
- } else if (isArrowFunction || !this.isSimpleParamList(node.params)) {
- this.checkParams(node);
- }
-};
-
-pp$3.isSimpleParamList = function(params) {
- for (var i = 0; i < params.length; i++)
- if (params[i].type !== "Identifier") return false
- return true
-};
-
-// Checks function params for various disallowed patterns such as using "eval"
-// or "arguments" and duplicate parameters.
-
-pp$3.checkParams = function(node) {
- var this$1 = this;
-
- var nameHash = {};
- for (var i = 0; i < node.params.length; i++) this$1.checkLVal(node.params[i], true, nameHash);
-};
-
-// Parses a comma-separated list of expressions, and returns them as
-// an array. `close` is the token type that ends the list, and
-// `allowEmpty` can be turned on to allow subsequent commas with
-// nothing in between them to be parsed as `null` (which is needed
-// for array literals).
-
-pp$3.parseExprList = function(close, allowTrailingComma, allowEmpty, refDestructuringErrors) {
- var this$1 = this;
-
- var elts = [], first = true;
- while (!this.eat(close)) {
- if (!first) {
- this$1.expect(tt.comma);
- if (allowTrailingComma && this$1.afterTrailingComma(close)) break
- } else first = false;
-
- var elt;
- if (allowEmpty && this$1.type === tt.comma)
- elt = null;
- else if (this$1.type === tt.ellipsis) {
- elt = this$1.parseSpread(refDestructuringErrors);
- if (this$1.type === tt.comma && refDestructuringErrors && !refDestructuringErrors.trailingComma) {
- refDestructuringErrors.trailingComma = this$1.start;
- }
- } else
- elt = this$1.parseMaybeAssign(false, refDestructuringErrors);
- elts.push(elt);
- }
- return elts
-};
-
-// Parse the next token as an identifier. If `liberal` is true (used
-// when parsing properties), it will also convert keywords into
-// identifiers.
-
-pp$3.parseIdent = function(liberal) {
- var node = this.startNode();
- if (liberal && this.options.allowReserved == "never") liberal = false;
- if (this.type === tt.name) {
- if (!liberal && (this.strict ? this.reservedWordsStrict : this.reservedWords).test(this.value) &&
- (this.options.ecmaVersion >= 6 ||
- this.input.slice(this.start, this.end).indexOf("\\") == -1))
- this.raiseRecoverable(this.start, "The keyword '" + this.value + "' is reserved");
- if (this.inGenerator && this.value === "yield")
- this.raiseRecoverable(this.start, "Can not use 'yield' as identifier inside a generator");
- if (this.inAsync && this.value === "await")
- this.raiseRecoverable(this.start, "Can not use 'await' as identifier inside an async function");
- node.name = this.value;
- } else if (liberal && this.type.keyword) {
- node.name = this.type.keyword;
- } else {
- this.unexpected();
- }
- this.next();
- return this.finishNode(node, "Identifier")
-};
-
-// Parses yield expression inside generator.
-
-pp$3.parseYield = function() {
- if (!this.yieldPos) this.yieldPos = this.start;
-
- var node = this.startNode();
- this.next();
- if (this.type == tt.semi || this.canInsertSemicolon() || (this.type != tt.star && !this.type.startsExpr)) {
- node.delegate = false;
- node.argument = null;
- } else {
- node.delegate = this.eat(tt.star);
- node.argument = this.parseMaybeAssign();
- }
- return this.finishNode(node, "YieldExpression")
-};
-
-pp$3.parseAwait = function() {
- if (!this.awaitPos) this.awaitPos = this.start;
-
- var node = this.startNode();
- this.next();
- node.argument = this.parseMaybeUnary(null, true);
- return this.finishNode(node, "AwaitExpression")
-};
-
-var pp$4 = Parser.prototype;
-
-// This function is used to raise exceptions on parse errors. It
-// takes an offset integer (into the current `input`) to indicate
-// the location of the error, attaches the position to the end
-// of the error message, and then raises a `SyntaxError` with that
-// message.
-
-pp$4.raise = function(pos, message) {
- var loc = getLineInfo(this.input, pos);
- message += " (" + loc.line + ":" + loc.column + ")";
- var err = new SyntaxError(message);
- err.pos = pos; err.loc = loc; err.raisedAt = this.pos;
- throw err
-};
-
-pp$4.raiseRecoverable = pp$4.raise;
-
-pp$4.curPosition = function() {
- if (this.options.locations) {
- return new Position(this.curLine, this.pos - this.lineStart)
- }
-};
-
-var Node = function Node(parser, pos, loc) {
- this.type = "";
- this.start = pos;
- this.end = 0;
- if (parser.options.locations)
- this.loc = new SourceLocation(parser, loc);
- if (parser.options.directSourceFile)
- this.sourceFile = parser.options.directSourceFile;
- if (parser.options.ranges)
- this.range = [pos, 0];
-};
-
-// Start an AST node, attaching a start offset.
-
-var pp$5 = Parser.prototype;
-
-pp$5.startNode = function() {
- return new Node(this, this.start, this.startLoc)
-};
-
-pp$5.startNodeAt = function(pos, loc) {
- return new Node(this, pos, loc)
-};
-
-// Finish an AST node, adding `type` and `end` properties.
-
-function finishNodeAt(node, type, pos, loc) {
- node.type = type;
- node.end = pos;
- if (this.options.locations)
- node.loc.end = loc;
- if (this.options.ranges)
- node.range[1] = pos;
- return node
-}
-
-pp$5.finishNode = function(node, type) {
- return finishNodeAt.call(this, node, type, this.lastTokEnd, this.lastTokEndLoc)
-};
-
-// Finish node at given position
-
-pp$5.finishNodeAt = function(node, type, pos, loc) {
- return finishNodeAt.call(this, node, type, pos, loc)
-};
-
-var TokContext = function TokContext(token, isExpr, preserveSpace, override) {
- this.token = token;
- this.isExpr = !!isExpr;
- this.preserveSpace = !!preserveSpace;
- this.override = override;
-};
-
-var types = {
- b_stat: new TokContext("{", false),
- b_expr: new TokContext("{", true),
- b_tmpl: new TokContext("${", true),
- p_stat: new TokContext("(", false),
- p_expr: new TokContext("(", true),
- q_tmpl: new TokContext("`", true, true, function (p) { return p.readTmplToken(); }),
- f_expr: new TokContext("function", true)
-};
-
-var pp$6 = Parser.prototype;
-
-pp$6.initialContext = function() {
- return [types.b_stat]
-};
-
-pp$6.braceIsBlock = function(prevType) {
- if (prevType === tt.colon) {
- var parent = this.curContext();
- if (parent === types.b_stat || parent === types.b_expr)
- return !parent.isExpr
- }
- if (prevType === tt._return)
- return lineBreak.test(this.input.slice(this.lastTokEnd, this.start))
- if (prevType === tt._else || prevType === tt.semi || prevType === tt.eof || prevType === tt.parenR)
- return true
- if (prevType == tt.braceL)
- return this.curContext() === types.b_stat
- return !this.exprAllowed
-};
-
-pp$6.updateContext = function(prevType) {
- var update, type = this.type;
- if (type.keyword && prevType == tt.dot)
- this.exprAllowed = false;
- else if (update = type.updateContext)
- update.call(this, prevType);
- else
- this.exprAllowed = type.beforeExpr;
-};
-
-// Token-specific context update code
-
-tt.parenR.updateContext = tt.braceR.updateContext = function() {
- if (this.context.length == 1) {
- this.exprAllowed = true;
- return
- }
- var out = this.context.pop();
- if (out === types.b_stat && this.curContext() === types.f_expr) {
- this.context.pop();
- this.exprAllowed = false;
- } else if (out === types.b_tmpl) {
- this.exprAllowed = true;
- } else {
- this.exprAllowed = !out.isExpr;
- }
-};
-
-tt.braceL.updateContext = function(prevType) {
- this.context.push(this.braceIsBlock(prevType) ? types.b_stat : types.b_expr);
- this.exprAllowed = true;
-};
-
-tt.dollarBraceL.updateContext = function() {
- this.context.push(types.b_tmpl);
- this.exprAllowed = true;
-};
-
-tt.parenL.updateContext = function(prevType) {
- var statementParens = prevType === tt._if || prevType === tt._for || prevType === tt._with || prevType === tt._while;
- this.context.push(statementParens ? types.p_stat : types.p_expr);
- this.exprAllowed = true;
-};
-
-tt.incDec.updateContext = function() {
- // tokExprAllowed stays unchanged
-};
-
-tt._function.updateContext = function(prevType) {
- if (prevType.beforeExpr && prevType !== tt.semi && prevType !== tt._else &&
- !((prevType === tt.colon || prevType === tt.braceL) && this.curContext() === types.b_stat))
- this.context.push(types.f_expr);
- this.exprAllowed = false;
-};
-
-tt.backQuote.updateContext = function() {
- if (this.curContext() === types.q_tmpl)
- this.context.pop();
- else
- this.context.push(types.q_tmpl);
- this.exprAllowed = false;
-};
-
-// Object type used to represent tokens. Note that normally, tokens
-// simply exist as properties on the parser object. This is only
-// used for the onToken callback and the external tokenizer.
-
-var Token = function Token(p) {
- this.type = p.type;
- this.value = p.value;
- this.start = p.start;
- this.end = p.end;
- if (p.options.locations)
- this.loc = new SourceLocation(p, p.startLoc, p.endLoc);
- if (p.options.ranges)
- this.range = [p.start, p.end];
-};
-
-// ## Tokenizer
-
-var pp$7 = Parser.prototype;
-
-// Are we running under Rhino?
-var isRhino = typeof Packages == "object" && Object.prototype.toString.call(Packages) == "[object JavaPackage]";
-
-// Move to the next token
-
-pp$7.next = function() {
- if (this.options.onToken)
- this.options.onToken(new Token(this));
-
- this.lastTokEnd = this.end;
- this.lastTokStart = this.start;
- this.lastTokEndLoc = this.endLoc;
- this.lastTokStartLoc = this.startLoc;
- this.nextToken();
-};
-
-pp$7.getToken = function() {
- this.next();
- return new Token(this)
-};
-
-// If we're in an ES6 environment, make parsers iterable
-if (typeof Symbol !== "undefined")
- pp$7[Symbol.iterator] = function () {
- var self = this;
- return {next: function () {
- var token = self.getToken();
- return {
- done: token.type === tt.eof,
- value: token
- }
- }}
- };
-
-// Toggle strict mode. Re-reads the next number or string to please
-// pedantic tests (`"use strict"; 010;` should fail).
-
-pp$7.setStrict = function(strict) {
- var this$1 = this;
-
- this.strict = strict;
- if (this.type !== tt.num && this.type !== tt.string) return
- this.pos = this.start;
- if (this.options.locations) {
- while (this.pos < this.lineStart) {
- this$1.lineStart = this$1.input.lastIndexOf("\n", this$1.lineStart - 2) + 1;
- --this$1.curLine;
- }
- }
- this.nextToken();
-};
-
-pp$7.curContext = function() {
- return this.context[this.context.length - 1]
-};
-
-// Read a single token, updating the parser object's token-related
-// properties.
-
-pp$7.nextToken = function() {
- var curContext = this.curContext();
- if (!curContext || !curContext.preserveSpace) this.skipSpace();
-
- this.start = this.pos;
- if (this.options.locations) this.startLoc = this.curPosition();
- if (this.pos >= this.input.length) return this.finishToken(tt.eof)
-
- if (curContext.override) return curContext.override(this)
- else this.readToken(this.fullCharCodeAtPos());
-};
-
-pp$7.readToken = function(code) {
- // Identifier or keyword. '\uXXXX' sequences are allowed in
- // identifiers, so '\' also dispatches to that.
- if (isIdentifierStart(code, this.options.ecmaVersion >= 6) || code === 92 /* '\' */)
- return this.readWord()
-
- return this.getTokenFromCode(code)
-};
-
-pp$7.fullCharCodeAtPos = function() {
- var code = this.input.charCodeAt(this.pos);
- if (code <= 0xd7ff || code >= 0xe000) return code
- var next = this.input.charCodeAt(this.pos + 1);
- return (code << 10) + next - 0x35fdc00
-};
-
-pp$7.skipBlockComment = function() {
- var this$1 = this;
-
- var startLoc = this.options.onComment && this.curPosition();
- var start = this.pos, end = this.input.indexOf("*/", this.pos += 2);
- if (end === -1) this.raise(this.pos - 2, "Unterminated comment");
- this.pos = end + 2;
- if (this.options.locations) {
- lineBreakG.lastIndex = start;
- var match;
- while ((match = lineBreakG.exec(this.input)) && match.index < this.pos) {
- ++this$1.curLine;
- this$1.lineStart = match.index + match[0].length;
- }
- }
- if (this.options.onComment)
- this.options.onComment(true, this.input.slice(start + 2, end), start, this.pos,
- startLoc, this.curPosition());
-};
-
-pp$7.skipLineComment = function(startSkip) {
- var this$1 = this;
-
- var start = this.pos;
- var startLoc = this.options.onComment && this.curPosition();
- var ch = this.input.charCodeAt(this.pos+=startSkip);
- while (this.pos < this.input.length && ch !== 10 && ch !== 13 && ch !== 8232 && ch !== 8233) {
- ++this$1.pos;
- ch = this$1.input.charCodeAt(this$1.pos);
- }
- if (this.options.onComment)
- this.options.onComment(false, this.input.slice(start + startSkip, this.pos), start, this.pos,
- startLoc, this.curPosition());
-};
-
-// Called at the start of the parse and after every token. Skips
-// whitespace and comments, and.
-
-pp$7.skipSpace = function() {
- var this$1 = this;
-
- loop: while (this.pos < this.input.length) {
- var ch = this$1.input.charCodeAt(this$1.pos);
- switch (ch) {
- case 32: case 160: // ' '
- ++this$1.pos;
- break
- case 13:
- if (this$1.input.charCodeAt(this$1.pos + 1) === 10) {
- ++this$1.pos;
- }
- case 10: case 8232: case 8233:
- ++this$1.pos;
- if (this$1.options.locations) {
- ++this$1.curLine;
- this$1.lineStart = this$1.pos;
- }
- break
- case 47: // '/'
- switch (this$1.input.charCodeAt(this$1.pos + 1)) {
- case 42: // '*'
- this$1.skipBlockComment();
- break
- case 47:
- this$1.skipLineComment(2);
- break
- default:
- break loop
- }
- break
- default:
- if (ch > 8 && ch < 14 || ch >= 5760 && nonASCIIwhitespace.test(String.fromCharCode(ch))) {
- ++this$1.pos;
- } else {
- break loop
- }
- }
- }
-};
-
-// Called at the end of every token. Sets `end`, `val`, and
-// maintains `context` and `exprAllowed`, and skips the space after
-// the token, so that the next one's `start` will point at the
-// right position.
-
-pp$7.finishToken = function(type, val) {
- this.end = this.pos;
- if (this.options.locations) this.endLoc = this.curPosition();
- var prevType = this.type;
- this.type = type;
- this.value = val;
-
- this.updateContext(prevType);
-};
-
-// ### Token reading
-
-// This is the function that is called to fetch the next token. It
-// is somewhat obscure, because it works in character codes rather
-// than characters, and because operator parsing has been inlined
-// into it.
-//
-// All in the name of speed.
-//
-pp$7.readToken_dot = function() {
- var next = this.input.charCodeAt(this.pos + 1);
- if (next >= 48 && next <= 57) return this.readNumber(true)
- var next2 = this.input.charCodeAt(this.pos + 2);
- if (this.options.ecmaVersion >= 6 && next === 46 && next2 === 46) { // 46 = dot '.'
- this.pos += 3;
- return this.finishToken(tt.ellipsis)
- } else {
- ++this.pos;
- return this.finishToken(tt.dot)
- }
-};
-
-pp$7.readToken_slash = function() { // '/'
- var next = this.input.charCodeAt(this.pos + 1);
- if (this.exprAllowed) {++this.pos; return this.readRegexp()}
- if (next === 61) return this.finishOp(tt.assign, 2)
- return this.finishOp(tt.slash, 1)
-};
-
-pp$7.readToken_mult_modulo_exp = function(code) { // '%*'
- var next = this.input.charCodeAt(this.pos + 1);
- var size = 1;
- var tokentype = code === 42 ? tt.star : tt.modulo;
-
- // exponentiation operator ** and **=
- if (this.options.ecmaVersion >= 7 && next === 42) {
- ++size;
- tokentype = tt.starstar;
- next = this.input.charCodeAt(this.pos + 2);
- }
-
- if (next === 61) return this.finishOp(tt.assign, size + 1)
- return this.finishOp(tokentype, size)
-};
-
-pp$7.readToken_pipe_amp = function(code) { // '|&'
- var next = this.input.charCodeAt(this.pos + 1);
- if (next === code) return this.finishOp(code === 124 ? tt.logicalOR : tt.logicalAND, 2)
- if (next === 61) return this.finishOp(tt.assign, 2)
- return this.finishOp(code === 124 ? tt.bitwiseOR : tt.bitwiseAND, 1)
-};
-
-pp$7.readToken_caret = function() { // '^'
- var next = this.input.charCodeAt(this.pos + 1);
- if (next === 61) return this.finishOp(tt.assign, 2)
- return this.finishOp(tt.bitwiseXOR, 1)
-};
-
-pp$7.readToken_plus_min = function(code) { // '+-'
- var next = this.input.charCodeAt(this.pos + 1);
- if (next === code) {
- if (next == 45 && this.input.charCodeAt(this.pos + 2) == 62 &&
- lineBreak.test(this.input.slice(this.lastTokEnd, this.pos))) {
- // A `-->` line comment
- this.skipLineComment(3);
- this.skipSpace();
- return this.nextToken()
- }
- return this.finishOp(tt.incDec, 2)
- }
- if (next === 61) return this.finishOp(tt.assign, 2)
- return this.finishOp(tt.plusMin, 1)
-};
-
-pp$7.readToken_lt_gt = function(code) { // '<>'
- var next = this.input.charCodeAt(this.pos + 1);
- var size = 1;
- if (next === code) {
- size = code === 62 && this.input.charCodeAt(this.pos + 2) === 62 ? 3 : 2;
- if (this.input.charCodeAt(this.pos + size) === 61) return this.finishOp(tt.assign, size + 1)
- return this.finishOp(tt.bitShift, size)
- }
- if (next == 33 && code == 60 && this.input.charCodeAt(this.pos + 2) == 45 &&
- this.input.charCodeAt(this.pos + 3) == 45) {
- if (this.inModule) this.unexpected();
- // `/ );
- parser.eat( '-->' );
-
- parser.current().children.push({
- start,
- end: parser.index,
- type: 'Comment',
- data
- });
-
- return null;
- }
-
- const isClosingTag = parser.eat( '/' );
-
- // TODO handle cases like onetwo
-
- const name = readTagName( parser );
-
- parser.allowWhitespace();
-
- if ( isClosingTag ) {
- if ( !parser.eat( '>' ) ) parser.error( `Expected '>'` );
-
- const element = parser.current();
-
- // strip leading/trailing whitespace as necessary
- if ( element.children.length ) {
- const firstChild = element.children[0];
- const lastChild = element.children[ element.children.length - 1 ];
-
- if ( firstChild.type === 'Text' ) {
- firstChild.data = trimStart( firstChild.data );
- if ( !firstChild.data ) element.children.shift();
- }
-
- if ( lastChild.type === 'Text' ) {
- lastChild.data = trimEnd( lastChild.data );
- if ( !lastChild.data ) element.children.pop();
- }
- }
-
- element.end = parser.index;
- parser.stack.pop();
-
- return null;
- }
-
- const attributes = [];
- const uniqueNames = new Set();
-
- let attribute;
- while ( attribute = readAttribute( parser, uniqueNames ) ) {
- attributes.push( attribute );
- parser.allowWhitespace();
- }
-
- parser.allowWhitespace();
-
- // special cases – ' ) ) {\n\t\t\tbreak;\n\t\t}\n\t}\n\n\tconst source = spaces( scriptStart ) + parser.template.slice( scriptStart, scriptEnd );\n\n\tlet ast;\n\n\ttry {\n\t\tast = parse( source, {\n\t\t\tecmaVersion: 8,\n\t\t\tsourceType: 'module'\n\t\t});\n\t} catch ( err ) {\n\t\tparser.acornError( err );\n\t}\n\n\tif ( !ast.body.length ) return null;\n\n\tast.start = scriptStart;\n\n\treturn {\n\t\tstart,\n\t\tend: parser.index,\n\t\tattributes,\n\t\tcontent: ast\n\t};\n}\n","export default function readStyle ( parser, start, attributes ) {\n\tconst contentStart = parser.index;\n\tconst styles = parser.readUntil( /<\\/style>/ );\n\tconst contentEnd = parser.index;\n\n\tparser.eat( '', true );\n\tconst end = parser.index;\n\n\treturn {\n\t\tstart,\n\t\tend,\n\t\tattributes,\n\t\tcontent: {\n\t\t\tstart: contentStart,\n\t\t\tend: contentEnd,\n\t\t\tstyles\n\t\t}\n\t};\n}\n","import { tokenizer, tokTypes, parseExpressionAt } from 'acorn';\n\nexport function readEventHandlerDirective ( parser, start, name ) {\n\tconst quoteMark = (\n\t\tparser.eat( `'` ) ? `'` :\n\t\tparser.eat( `\"` ) ? `\"` :\n\t\tnull\n\t);\n\n\tconst expressionStart = parser.index;\n\tlet end = null;\n\n\tlet depth = 0;\n\tfor ( const token of tokenizer( parser.remaining() ) ) {\n\t\tif ( token.type === tokTypes.parenL ) depth += 1;\n\t\tif ( token.type === tokTypes.parenR ) {\n\t\t\tdepth -= 1;\n\t\t\tif ( depth === 0 ) {\n\t\t\t\tend = expressionStart + token.end;\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\tconst expression = parseExpressionAt( parser.template.slice( 0, end ), expressionStart );\n\tparser.index = expression.end;\n\n\tif ( expression.type !== 'CallExpression' ) {\n\t\tparser.error( `Expected call expression`, expressionStart );\n\t}\n\n\tif ( quoteMark ) {\n\t\tparser.eat( quoteMark, true );\n\t}\n\n\treturn {\n\t\tstart,\n\t\tend: parser.index,\n\t\ttype: 'EventHandler',\n\t\tname,\n\t\texpression\n\t};\n}\n\nexport function readBindingDirective ( parser, start, name ) {\n\tlet value = name; // shorthand – bind:foo equivalent to bind:foo='foo'\n\n\tif ( parser.eat( '=' ) ) {\n\t\tconst quoteMark = (\n\t\t\tparser.eat( `'` ) ? `'` :\n\t\t\tparser.eat( `\"` ) ? `\"` :\n\t\t\tnull\n\t\t);\n\n\t\tvalue = parser.read( /([a-zA-Z_$][a-zA-Z0-9_$]*)(\\.[a-zA-Z_$][a-zA-Z0-9_$]*)*/ );\n\t\tif ( !value ) parser.error( `Expected valid property name` );\n\n\t\tif ( quoteMark ) {\n\t\t\tparser.eat( quoteMark, true );\n\t\t}\n\t}\n\n\treturn {\n\t\tstart,\n\t\tend: parser.index,\n\t\ttype: 'Binding',\n\t\tname,\n\t\tvalue\n\t};\n}\n","export const whitespace = /\\s/;\n","import { whitespace } from '../patterns.js';\n\nexport function trimStart ( str ) {\n\tlet i = 0;\n\twhile ( whitespace.test( str[i] ) ) i += 1;\n\n\treturn str.slice( i );\n}\n\nexport function trimEnd ( str ) {\n\tlet i = str.length;\n\twhile ( whitespace.test( str[ i - 1 ] ) ) i -= 1;\n\n\treturn str.slice( 0, i );\n}\n","// borrowed from Ractive – https://github.com/ractivejs/ractive/blob/faf93cbd33c3fedfd8d6dd48340990540bde4a94/src/utils/html.js\nconst htmlEntities = { quot: 34, amp: 38, apos: 39, lt: 60, gt: 62, nbsp: 160, iexcl: 161, cent: 162, pound: 163, curren: 164, yen: 165, brvbar: 166, sect: 167, uml: 168, copy: 169, ordf: 170, laquo: 171, not: 172, shy: 173, reg: 174, macr: 175, deg: 176, plusmn: 177, sup2: 178, sup3: 179, acute: 180, micro: 181, para: 182, middot: 183, cedil: 184, sup1: 185, ordm: 186, raquo: 187, frac14: 188, frac12: 189, frac34: 190, iquest: 191, Agrave: 192, Aacute: 193, Acirc: 194, Atilde: 195, Auml: 196, Aring: 197, AElig: 198, Ccedil: 199, Egrave: 200, Eacute: 201, Ecirc: 202, Euml: 203, Igrave: 204, Iacute: 205, Icirc: 206, Iuml: 207, ETH: 208, Ntilde: 209, Ograve: 210, Oacute: 211, Ocirc: 212, Otilde: 213, Ouml: 214, times: 215, Oslash: 216, Ugrave: 217, Uacute: 218, Ucirc: 219, Uuml: 220, Yacute: 221, THORN: 222, szlig: 223, agrave: 224, aacute: 225, acirc: 226, atilde: 227, auml: 228, aring: 229, aelig: 230, ccedil: 231, egrave: 232, eacute: 233, ecirc: 234, euml: 235, igrave: 236, iacute: 237, icirc: 238, iuml: 239, eth: 240, ntilde: 241, ograve: 242, oacute: 243, ocirc: 244, otilde: 245, ouml: 246, divide: 247, oslash: 248, ugrave: 249, uacute: 250, ucirc: 251, uuml: 252, yacute: 253, thorn: 254, yuml: 255, OElig: 338, oelig: 339, Scaron: 352, scaron: 353, Yuml: 376, fnof: 402, circ: 710, tilde: 732, Alpha: 913, Beta: 914, Gamma: 915, Delta: 916, Epsilon: 917, Zeta: 918, Eta: 919, Theta: 920, Iota: 921, Kappa: 922, Lambda: 923, Mu: 924, Nu: 925, Xi: 926, Omicron: 927, Pi: 928, Rho: 929, Sigma: 931, Tau: 932, Upsilon: 933, Phi: 934, Chi: 935, Psi: 936, Omega: 937, alpha: 945, beta: 946, gamma: 947, delta: 948, epsilon: 949, zeta: 950, eta: 951, theta: 952, iota: 953, kappa: 954, lambda: 955, mu: 956, nu: 957, xi: 958, omicron: 959, pi: 960, rho: 961, sigmaf: 962, sigma: 963, tau: 964, upsilon: 965, phi: 966, chi: 967, psi: 968, omega: 969, thetasym: 977, upsih: 978, piv: 982, ensp: 8194, emsp: 8195, thinsp: 8201, zwnj: 8204, zwj: 8205, lrm: 8206, rlm: 8207, ndash: 8211, mdash: 8212, lsquo: 8216, rsquo: 8217, sbquo: 8218, ldquo: 8220, rdquo: 8221, bdquo: 8222, dagger: 8224, Dagger: 8225, bull: 8226, hellip: 8230, permil: 8240, prime: 8242, Prime: 8243, lsaquo: 8249, rsaquo: 8250, oline: 8254, frasl: 8260, euro: 8364, image: 8465, weierp: 8472, real: 8476, trade: 8482, alefsym: 8501, larr: 8592, uarr: 8593, rarr: 8594, darr: 8595, harr: 8596, crarr: 8629, lArr: 8656, uArr: 8657, rArr: 8658, dArr: 8659, hArr: 8660, forall: 8704, part: 8706, exist: 8707, empty: 8709, nabla: 8711, isin: 8712, notin: 8713, ni: 8715, prod: 8719, sum: 8721, minus: 8722, lowast: 8727, radic: 8730, prop: 8733, infin: 8734, ang: 8736, and: 8743, or: 8744, cap: 8745, cup: 8746, int: 8747, there4: 8756, sim: 8764, cong: 8773, asymp: 8776, ne: 8800, equiv: 8801, le: 8804, ge: 8805, sub: 8834, sup: 8835, nsub: 8836, sube: 8838, supe: 8839, oplus: 8853, otimes: 8855, perp: 8869, sdot: 8901, lceil: 8968, rceil: 8969, lfloor: 8970, rfloor: 8971, lang: 9001, rang: 9002, loz: 9674, spades: 9824, clubs: 9827, hearts: 9829, diams: 9830\t};\nconst controlCharacters = [ 8364, 129, 8218, 402, 8222, 8230, 8224, 8225, 710, 8240, 352, 8249, 338, 141, 381, 143, 144, 8216, 8217, 8220, 8221, 8226, 8211, 8212, 732, 8482, 353, 8250, 339, 157, 382, 376 ];\nconst entityPattern = new RegExp( '&(#?(?:x[\\\\w\\\\d]+|\\\\d+|' + Object.keys( htmlEntities ).join( '|' ) + '));?', 'g' );\n\nexport function decodeCharacterReferences ( html ) {\n\treturn html.replace( entityPattern, ( match, entity ) => {\n\t\tlet code;\n\n\t\t// Handle named entities\n\t\tif ( entity[0] !== '#' ) {\n\t\t\tcode = htmlEntities[ entity ];\n\t\t} else if ( entity[1] === 'x' ) {\n\t\t\tcode = parseInt( entity.substring( 2 ), 16 );\n\t\t} else {\n\t\t\tcode = parseInt( entity.substring( 1 ), 10 );\n\t\t}\n\n\t\tif ( !code ) {\n\t\t\treturn match;\n\t\t}\n\n\t\treturn String.fromCodePoint( validateCode( code ) );\n\t});\n}\nconst invalid = 65533;\n\n// some code points are verboten. If we were inserting HTML, the browser would replace the illegal\n// code points with alternatives in some cases - since we're bypassing that mechanism, we need\n// to replace them ourselves\n//\n// Source: http://en.wikipedia.org/wiki/Character_encodings_in_HTML#Illegal_characters\nfunction validateCode ( code ) {\n\tif ( !code ) {\n\t\treturn invalid;\n\t}\n\n\t// line feed becomes generic whitespace\n\tif ( code === 10 ) {\n\t\treturn 32;\n\t}\n\n\t// ASCII range. (Why someone would use HTML entities for ASCII characters I don't know, but...)\n\tif ( code < 128 ) {\n\t\treturn code;\n\t}\n\n\t// code points 128-159 are dealt with leniently by browsers, but they're incorrect. We need\n\t// to correct the mistake or we'll end up with missing € signs and so on\n\tif ( code <= 159 ) {\n\t\treturn controlCharacters[ code - 128 ];\n\t}\n\n\t// basic multilingual plane\n\tif ( code < 55296 ) {\n\t\treturn code;\n\t}\n\n\t// UTF-16 surrogate halves\n\tif ( code <= 57343 ) {\n\t\treturn invalid;\n\t}\n\n\t// rest of the basic multilingual plane\n\tif ( code <= 65535 ) {\n\t\treturn code;\n\t}\n\n\t// supplementary multilingual plane 0x10000 - 0x1ffff\n\tif ( code >= 65536 && code <= 131071 ) {\n\t\treturn code;\n\t}\n\n\t// supplementary ideographic plane 0x20000 - 0x2ffff\n\tif ( code >= 131072 && code <= 196607 ) {\n\t\treturn code;\n\t}\n\n\treturn invalid;\n}\n","import readExpression from '../read/expression.js';\nimport readScript from '../read/script.js';\nimport readStyle from '../read/style.js';\nimport { readEventHandlerDirective, readBindingDirective } from '../read/directives.js';\nimport { trimStart, trimEnd } from '../utils/trim.js';\nimport { decodeCharacterReferences } from '../utils/html.js';\n\nconst validTagName = /^[a-zA-Z]{1,}:?[a-zA-Z0-9\\-]*/;\nconst voidElementNames = /^(?:area|base|br|col|command|doctype|embed|hr|img|input|keygen|link|meta|param|source|track|wbr)$/;\nconst invalidUnquotedAttributeCharacters = /[\\s\"'=<>\\/`]/;\n\nconst specials = {\n\tscript: {\n\t\tread: readScript,\n\t\tproperty: 'js'\n\t},\n\n\tstyle: {\n\t\tread: readStyle,\n\t\tproperty: 'css'\n\t}\n};\n\nexport default function tag ( parser ) {\n\tconst start = parser.index++;\n\n\tif ( parser.eat( '!--' ) ) {\n\t\tconst data = parser.readUntil( /-->/ );\n\t\tparser.eat( '-->' );\n\n\t\tparser.current().children.push({\n\t\t\tstart,\n\t\t\tend: parser.index,\n\t\t\ttype: 'Comment',\n\t\t\tdata\n\t\t});\n\n\t\treturn null;\n\t}\n\n\tconst isClosingTag = parser.eat( '/' );\n\n\t// TODO handle cases like onetwo\n\n\tconst name = readTagName( parser );\n\n\tparser.allowWhitespace();\n\n\tif ( isClosingTag ) {\n\t\tif ( !parser.eat( '>' ) ) parser.error( `Expected '>'` );\n\n\t\tconst element = parser.current();\n\n\t\t// strip leading/trailing whitespace as necessary\n\t\tif ( element.children.length ) {\n\t\t\tconst firstChild = element.children[0];\n\t\t\tconst lastChild = element.children[ element.children.length - 1 ];\n\n\t\t\tif ( firstChild.type === 'Text' ) {\n\t\t\t\tfirstChild.data = trimStart( firstChild.data );\n\t\t\t\tif ( !firstChild.data ) element.children.shift();\n\t\t\t}\n\n\t\t\tif ( lastChild.type === 'Text' ) {\n\t\t\t\tlastChild.data = trimEnd( lastChild.data );\n\t\t\t\tif ( !lastChild.data ) element.children.pop();\n\t\t\t}\n\t\t}\n\n\t\telement.end = parser.index;\n\t\tparser.stack.pop();\n\n\t\treturn null;\n\t}\n\n\tconst attributes = [];\n\tconst uniqueNames = new Set();\n\n\tlet attribute;\n\twhile ( attribute = readAttribute( parser, uniqueNames ) ) {\n\t\tattributes.push( attribute );\n\t\tparser.allowWhitespace();\n\t}\n\n\tparser.allowWhitespace();\n\n\t// special cases –