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'use strict';
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function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
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var fs = require('fs');
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var ___compiler_svelte_js = require('../compiler/svelte.js');
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var MagicString = require('magic-string');
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var MagicString__default = _interopDefault(MagicString);
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function walk ( ast, ref) {
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var enter = ref.enter;
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var leave = ref.leave;
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visit( ast, null, enter, leave );
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}
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var context = {
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skip: function () { return context.shouldSkip = true; },
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shouldSkip: false
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};
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var childKeys = {};
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var toString = Object.prototype.toString;
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function isArray ( thing ) {
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return toString.call( thing ) === '[object Array]';
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}
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function visit ( node, parent, enter, leave, prop, index ) {
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if ( !node ) return;
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if ( enter ) {
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context.shouldSkip = false;
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enter.call( context, node, parent, prop, index );
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if ( context.shouldSkip ) return;
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}
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var keys = childKeys[ node.type ] || (
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childKeys[ node.type ] = Object.keys( node ).filter( function (key) { return typeof node[ key ] === 'object'; } )
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);
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for ( var i = 0; i < keys.length; i += 1 ) {
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var key = keys[i];
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var value = node[ key ];
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if ( isArray( value ) ) {
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for ( var j = 0; j < value.length; j += 1 ) {
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visit( value[j], node, enter, leave, key, j );
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}
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}
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else if ( value && value.type ) {
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visit( value, node, enter, leave, key, null );
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}
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}
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if ( leave ) {
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leave( node, parent, prop, index );
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}
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}
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const start = /\n(\t+)/;
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function deindent ( strings, ...values ) {
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const indentation = start.exec( strings[0] )[1];
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const pattern = new RegExp( `^${indentation}`, 'gm' );
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let result = strings[0].replace( start, '' ).replace( pattern, '' );
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let trailingIndentation = getTrailingIndentation( result );
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for ( let i = 1; i < strings.length; i += 1 ) {
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const value = String( values[ i - 1 ] ).replace( /\n/g, `\n${trailingIndentation}` );
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result += value + strings[i].replace( pattern, '' );
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trailingIndentation = getTrailingIndentation( result );
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}
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return result.trim();
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}
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function getTrailingIndentation ( str ) {
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let i = str.length;
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while ( str[ i - 1 ] === ' ' || str[ i - 1 ] === '\t' ) i -= 1;
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return str.slice( i, str.length );
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}
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function isReference ( node, parent ) {
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if ( node.type === 'MemberExpression' ) {
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return !node.computed && isReference( node.object, node );
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}
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if ( node.type === 'Identifier' ) {
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// the only time we could have an identifier node without a parent is
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// if it's the entire body of a function without a block statement –
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// i.e. an arrow function expression like `a => a`
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if ( !parent ) return true;
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// TODO is this right?
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if ( parent.type === 'MemberExpression' || parent.type === 'MethodDefinition' ) {
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return parent.computed || node === parent.object;
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}
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// disregard the `bar` in `{ bar: foo }`, but keep it in `{ [bar]: foo }`
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if ( parent.type === 'Property' ) return parent.computed || node === parent.value;
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// disregard the `bar` in `class Foo { bar () {...} }`
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if ( parent.type === 'MethodDefinition' ) return false;
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// disregard the `bar` in `export { foo as bar }`
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if ( parent.type === 'ExportSpecifier' && node !== parent.local ) return;
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return true;
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}
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}
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function flatten ( node ) {
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const parts = [];
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while ( node.type === 'MemberExpression' ) {
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if ( node.computed ) return null;
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parts.unshift( node.property.name );
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node = node.object;
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}
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if ( node.type !== 'Identifier' ) return null;
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const name = node.name;
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parts.unshift( name );
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return { name, keypath: parts.join( '.' ) };
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}
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function spaces ( i ) {
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let result = '';
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while ( i-- ) result += ' ';
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return result;
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}
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// largely borrowed from Ractive – https://github.com/ractivejs/ractive/blob/2ec648aaf5296bb88c21812e947e0e42fcc456e3/src/Ractive/config/custom/css/transform.js
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const selectorsPattern = /(?:^|\})?\s*([^\{\}]+)\s*\{/g;
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const commentsPattern = /\/\*.*?\*\//g;
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const selectorUnitPattern = /((?:(?:\[[^\]+]\])|(?:[^\s\+\>~:]))+)((?:::?[^\s\+\>\~\(:]+(?:\([^\)]+\))?)*\s*[\s\+\>\~]?)\s*/g;
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const excludePattern = /^(?:@|\d+%)/;
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function transformSelector ( selector, parent ) {
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const selectorUnits = [];
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let match;
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while ( match = selectorUnitPattern.exec( selector ) ) {
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selectorUnits.push({
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str: match[0],
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base: match[1],
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modifiers: match[2]
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});
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}
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// For each simple selector within the selector, we need to create a version
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// that a) combines with the id, and b) is inside the id
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const base = selectorUnits.map( unit => unit.str );
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const transformed = [];
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let i = selectorUnits.length;
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while ( i-- ) {
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const appended = base.slice();
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// Pseudo-selectors should go after the attribute selector
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const unit = selectorUnits[i];
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appended[i] = unit.base + parent + unit.modifiers || '';
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const prepended = base.slice();
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prepended[i] = parent + ' ' + prepended[i];
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transformed.push( appended.join( ' ' ), prepended.join( ' ' ) );
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}
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return transformed.join( ', ' );
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}
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function transformCss ( css, hash ) {
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const attr = `[svelte-${hash}]`;
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return css
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.replace( commentsPattern, '' )
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.replace( selectorsPattern, ( match, $1 ) => {
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// don't transform at-rules and keyframe declarations
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if ( excludePattern.test( $1 ) ) return match;
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const selectors = $1.split( ',' ).map( selector => selector.trim() );
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const transformed = selectors
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.map( selector => transformSelector( selector, attr ) )
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.join( ', ' ) + ' ';
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return match.replace( $1, transformed );
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});
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}
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function process ( parsed ) {
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return transformCss( spaces( parsed.css.content.start ) + parsed.css.content.styles, parsed.hash );
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}
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const voidElementNames = /^(?:area|base|br|col|command|doctype|embed|hr|img|input|keygen|link|meta|param|source|track|wbr)$/i;
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function compile ( source, filename ) {
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const parsed = ___compiler_svelte_js.parse( source, {} );
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___compiler_svelte_js.validate( parsed, source, {} );
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const code = new MagicString__default( source );
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const templateProperties = {};
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const components = {};
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const helpers = {};
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const imports = [];
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if ( parsed.js ) {
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walk( parsed.js.content, {
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enter ( node ) {
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code.addSourcemapLocation( node.start );
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code.addSourcemapLocation( node.end );
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}
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});
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// imports need to be hoisted out of the IIFE
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for ( let i = 0; i < parsed.js.content.body.length; i += 1 ) {
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const node = parsed.js.content.body[i];
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if ( node.type === 'ImportDeclaration' ) {
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let a = node.start;
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let b = node.end;
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while ( /[ \t]/.test( source[ a - 1 ] ) ) a -= 1;
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while ( source[b] === '\n' ) b += 1;
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//imports.push( source.slice( a, b ).replace( /^\s/, '' ) );
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imports.push( node );
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code.remove( a, b );
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}
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}
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const defaultExport = parsed.js.content.body.find( node => node.type === 'ExportDefaultDeclaration' );
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if ( defaultExport ) {
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const finalNode = parsed.js.content.body[ parsed.js.content.body.length - 1 ];
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if ( defaultExport === finalNode ) {
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// export is last property, we can just return it
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code.overwrite( defaultExport.start, defaultExport.declaration.start, `return ` );
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} else {
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// TODO ensure `template` isn't already declared
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code.overwrite( defaultExport.start, defaultExport.declaration.start, `var template = ` );
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let i = defaultExport.start;
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while ( /\s/.test( source[ i - 1 ] ) ) i--;
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const indentation = source.slice( i, defaultExport.start );
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code.appendLeft( finalNode.end, `\n\n${indentation}return template;` );
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}
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defaultExport.declaration.properties.forEach( prop => {
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templateProperties[ prop.key.name ] = prop.value;
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});
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code.prependRight( parsed.js.content.start, 'var template = (function () {' );
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} else {
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code.prependRight( parsed.js.content.start, '(function () {' );
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}
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code.appendLeft( parsed.js.content.end, '}());' );
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if ( templateProperties.helpers ) {
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templateProperties.helpers.properties.forEach( prop => {
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helpers[ prop.key.name ] = prop.value;
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});
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}
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if ( templateProperties.components ) {
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templateProperties.components.properties.forEach( prop => {
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components[ prop.key.name ] = prop.value;
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});
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}
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}
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let scope = new Set();
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const scopes = [ scope ];
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function contextualise ( expression ) {
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walk( expression, {
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enter ( node, parent ) {
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if ( isReference( node, parent ) ) {
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const { name } = flatten( node );
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if ( parent && parent.type === 'CallExpression' && node === parent.callee && helpers[ name ] ) {
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code.prependRight( node.start, `template.helpers.` );
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return;
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}
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if ( !scope.has( name ) ) {
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code.prependRight( node.start, `data.` );
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}
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this.skip();
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}
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}
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});
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return {
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snippet: `[✂${expression.start}-${expression.end}✂]`,
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string: code.slice( expression.start, expression.end )
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};
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}
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let elementDepth = 0;
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const stringifiers = {
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Component ( node ) {
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const props = node.attributes.map( attribute => {
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let value;
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if ( attribute.value === true ) {
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value = `true`;
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} else if ( attribute.value.length === 0 ) {
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value = `''`;
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} else if ( attribute.value.length === 1 ) {
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const chunk = attribute.value[0];
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if ( chunk.type === 'Text' ) {
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value = isNaN( parseFloat( chunk.data ) ) ? JSON.stringify( chunk.data ) : chunk.data;
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} else {
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const { snippet } = contextualise( chunk.expression );
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value = snippet;
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}
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} else {
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value = '`' + attribute.value.map( stringify ).join( '' ) + '`';
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}
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return `${attribute.name}: ${value}`;
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}).join( ', ' );
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let params = `{${props}}`;
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if ( node.children.length ) {
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params += `, { yield: () => \`${node.children.map( stringify ).join( '' )}\` }`;
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}
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return `\${template.components.${node.name}.render(${params})}`;
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},
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EachBlock ( node ) {
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const { snippet } = contextualise( node.expression );
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scope = new Set();
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scope.add( node.context );
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if ( node.index ) scope.add( node.index );
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scopes.push( scope );
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const block = `\${ ${snippet}.map( ${ node.index ? `( ${node.context}, ${node.index} )` : node.context} => \`${ node.children.map( stringify ).join( '' )}\` ).join( '' )}`;
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scopes.pop();
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scope = scopes[ scopes.length - 1 ];
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return block;
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},
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Element ( node ) {
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if ( node.name in components ) {
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return stringifiers.Component( node );
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}
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let element = `<${node.name}`;
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node.attributes.forEach( attribute => {
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let str = ` ${attribute.name}`;
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if ( attribute.value !== true ) {
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str += `="` + attribute.value.map( chunk => {
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if ( chunk.type === 'Text' ) {
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return chunk.data;
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}
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const { snippet } = contextualise( chunk.expression );
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return '${' + snippet + '}';
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}).join( '' ) + `"`;
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}
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element += str;
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});
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|
if ( parsed.css && elementDepth === 0 ) {
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element += ` svelte-${parsed.hash}`;
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}
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|
if ( voidElementNames.test( node.name ) ) {
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|
element += '>';
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|
} else if ( node.children.length === 0 ) {
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|
element += '/>';
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} else {
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|
elementDepth += 1;
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|
element += '>' + node.children.map( stringify ).join( '' ) + `</${node.name}>`;
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elementDepth -= 1;
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}
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|
return element;
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},
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IfBlock ( node ) {
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const { snippet } = contextualise( node.expression ); // TODO use snippet, for sourcemap support
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const consequent = node.children.map( stringify ).join( '' );
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const alternate = node.else ? node.else.children.map( stringify ).join( '' ) : '';
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|
return '${ ' + snippet + ' ? `' + consequent + '` : `' + alternate + '` }';
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},
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|
MustacheTag ( node ) {
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|
const { snippet } = contextualise( node.expression ); // TODO use snippet, for sourcemap support
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|
return '${' + snippet + '}';
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},
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|
Text ( node ) {
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|
return node.data.replace( /\${/g, '\\${' );
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},
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|
YieldTag () {
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|
return `\${options.yield()}`;
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|
}
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|
};
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|
function stringify ( node ) {
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|
|
const stringifier = stringifiers[ node.type ];
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|
|
if ( !stringifier ) {
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|
throw new Error( `Not implemented: ${node.type}` );
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|
}
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|
return stringifier( node );
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|
}
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|
|
function createBlock ( node ) {
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|
|
const str = stringify( node );
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|
|
if ( str.slice( 0, 2 ) === '${' ) return str.slice( 2, -1 );
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|
|
return '`' + str + '`';
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|
|
}
|
|
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|
|
const blocks = parsed.html.children.map( node => {
|
|
|
return deindent`
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|
|
rendered += ${createBlock( node )};
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|
|
`;
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|
|
});
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|
|
const topLevelStatements = [];
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|
|
const importBlock = imports
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|
|
.map( ( declaration, i ) => {
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|
|
const defaultImport = declaration.specifiers.find( x => x.type === 'ImportDefaultSpecifier' || x.type === 'ImportSpecifier' && x.imported.name === 'default' );
|
|
|
const namespaceImport = declaration.specifiers.find( x => x.type === 'ImportNamespaceSpecifier' );
|
|
|
const namedImports = declaration.specifiers.filter( x => x.type === 'ImportSpecifier' && x.imported.name !== 'default' );
|
|
|
|
|
|
const name = ( defaultImport || namespaceImport ) ? ( defaultImport || namespaceImport ).local.name : `__import${i}`;
|
|
|
|
|
|
const statements = [
|
|
|
`var ${name} = require( '${declaration.source.value}' );`
|
|
|
];
|
|
|
|
|
|
namedImports.forEach( specifier => {
|
|
|
statements.push( `var ${specifier.local.name} = ${name}.${specifier.imported.name};` );
|
|
|
});
|
|
|
|
|
|
if ( defaultImport ) {
|
|
|
statements.push( `${name} = ( ${name} && ${name}.__esModule ) ? ${name}['default'] : ${name};` );
|
|
|
}
|
|
|
|
|
|
return statements.join( '\n' );
|
|
|
})
|
|
|
.filter( Boolean )
|
|
|
.join( '\n' );
|
|
|
|
|
|
if ( parsed.js ) {
|
|
|
if ( imports.length ) {
|
|
|
topLevelStatements.push( importBlock );
|
|
|
}
|
|
|
|
|
|
topLevelStatements.push( `[✂${parsed.js.content.start}-${parsed.js.content.end}✂]` );
|
|
|
}
|
|
|
|
|
|
const renderStatements = [
|
|
|
templateProperties.data ? `data = Object.assign( template.data(), data || {} );` : `data = data || {};`
|
|
|
];
|
|
|
|
|
|
if ( templateProperties.computed ) {
|
|
|
const statements = [];
|
|
|
const dependencies = new Map();
|
|
|
|
|
|
templateProperties.computed.properties.forEach( prop => {
|
|
|
const key = prop.key.name;
|
|
|
const value = prop.value;
|
|
|
|
|
|
const deps = value.params.map( param => param.name );
|
|
|
dependencies.set( key, deps );
|
|
|
});
|
|
|
|
|
|
const visited = new Set();
|
|
|
|
|
|
function visit ( key ) {
|
|
|
if ( !dependencies.has( key ) ) return; // not a computation
|
|
|
|
|
|
if ( visited.has( key ) ) return;
|
|
|
visited.add( key );
|
|
|
|
|
|
const deps = dependencies.get( key );
|
|
|
deps.forEach( visit );
|
|
|
|
|
|
statements.push( deindent`
|
|
|
data.${key} = template.computed.${key}( ${deps.map( dep => `data.${dep}` ).join( ', ' )} );
|
|
|
` );
|
|
|
}
|
|
|
|
|
|
templateProperties.computed.properties.forEach( prop => visit( prop.key.name ) );
|
|
|
|
|
|
renderStatements.push( statements.join( '\n' ) );
|
|
|
}
|
|
|
|
|
|
renderStatements.push(
|
|
|
`var rendered = '';`,
|
|
|
blocks.join( '\n\n' ),
|
|
|
`return rendered;`
|
|
|
);
|
|
|
|
|
|
const renderCssStatements = [
|
|
|
`var components = [];`
|
|
|
];
|
|
|
|
|
|
if ( parsed.css ) {
|
|
|
renderCssStatements.push( deindent`
|
|
|
components.push({
|
|
|
filename: exports.filename,
|
|
|
css: ${JSON.stringify( process( parsed ) )},
|
|
|
map: null // TODO
|
|
|
});
|
|
|
` );
|
|
|
}
|
|
|
|
|
|
if ( templateProperties.components ) {
|
|
|
renderCssStatements.push( deindent`
|
|
|
var seen = {};
|
|
|
|
|
|
function addComponent ( component ) {
|
|
|
var result = component.renderCss();
|
|
|
result.components.forEach( x => {
|
|
|
if ( seen[ x.filename ] ) return;
|
|
|
seen[ x.filename ] = true;
|
|
|
components.push( x );
|
|
|
});
|
|
|
}
|
|
|
` );
|
|
|
|
|
|
renderCssStatements.push( templateProperties.components.properties.map( prop => `addComponent( template.components.${prop.key.name} );` ).join( '\n' ) );
|
|
|
}
|
|
|
|
|
|
renderCssStatements.push( deindent`
|
|
|
return {
|
|
|
css: components.map( x => x.css ).join( '\\n' ),
|
|
|
map: null,
|
|
|
components
|
|
|
};
|
|
|
` );
|
|
|
|
|
|
topLevelStatements.push( deindent`
|
|
|
exports.filename = ${JSON.stringify( filename )};
|
|
|
|
|
|
exports.render = function ( data, options ) {
|
|
|
${renderStatements.join( '\n\n' )}
|
|
|
};
|
|
|
|
|
|
exports.renderCss = function () {
|
|
|
${renderCssStatements.join( '\n\n' )}
|
|
|
};
|
|
|
` );
|
|
|
|
|
|
const rendered = topLevelStatements.join( '\n\n' );
|
|
|
|
|
|
const pattern = /\[✂(\d+)-(\d+)$/;
|
|
|
|
|
|
const parts = rendered.split( '✂]' );
|
|
|
const finalChunk = parts.pop();
|
|
|
|
|
|
const compiled = new MagicString.Bundle({ separator: '' });
|
|
|
|
|
|
function addString ( str ) {
|
|
|
compiled.addSource({
|
|
|
content: new MagicString__default( str )
|
|
|
});
|
|
|
}
|
|
|
|
|
|
parts.forEach( str => {
|
|
|
const chunk = str.replace( pattern, '' );
|
|
|
if ( chunk ) addString( chunk );
|
|
|
|
|
|
const match = pattern.exec( str );
|
|
|
|
|
|
const snippet = code.snip( +match[1], +match[2] );
|
|
|
|
|
|
compiled.addSource({
|
|
|
filename,
|
|
|
content: snippet
|
|
|
});
|
|
|
});
|
|
|
|
|
|
addString( finalChunk );
|
|
|
|
|
|
return {
|
|
|
code: compiled.toString()
|
|
|
};
|
|
|
}
|
|
|
|
|
|
require.extensions[ '.html' ] = function ( module, filename ) {
|
|
|
const { code } = compile( fs.readFileSync( filename, 'utf-8' ) );
|
|
|
|
|
|
try {
|
|
|
return module._compile( code, filename );
|
|
|
} catch ( err ) {
|
|
|
console.log( code );
|
|
|
throw err;
|
|
|
}
|
|
|
};
|
|
|
//# sourceMappingURL=register.js.map
|
