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92 lines
3.1 KiB
92 lines
3.1 KiB
/** ----------------------------------------------------------------------
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This script gets a list of global objects/functions of browser.
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This process is simple for now, so it is handled without AST parser.
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Please run `node scripts/globals-extractor.mjs` at the project root.
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see: https://github.com/microsoft/TypeScript/tree/main/lib
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---------------------------------------------------------------------- */
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import http from 'https';
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import fs from 'fs';
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const GLOBAL_TS_PATH = './src/compiler/utils/globals.ts';
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// MEMO: add additional objects/functions which existed in `src/compiler/utils/names.ts`
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// before this script was introduced but could not be retrieved by this process.
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const SPECIALS = ['global', 'globalThis', 'InternalError', 'process', 'undefined'];
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const get_url = (name) => `https://raw.githubusercontent.com/microsoft/TypeScript/main/lib/lib.${name}.d.ts`;
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const extract_name = (split) => split.match(/^[a-zA-Z0-9_$]+/)[0];
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const extract_functions_and_references = (name, data) => {
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const functions = [];
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const references = [];
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data.split('\n').forEach(line => {
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const trimmed = line.trim();
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const split = trimmed.replace(/[\s+]/, ' ').split(' ');
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if (split[0] === 'declare' && split[1] !== 'type') {
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functions.push(extract_name(split[2]));
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} else if (trimmed.startsWith('/// <reference')) {
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const matched = trimmed.match(/ lib="(.+)"/);
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const reference = matched && matched[1];
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if (reference) references.push(reference);
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}
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});
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return { functions, references };
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};
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const do_get = (url) => new Promise((resolve, reject) => {
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http.get(url, (res) => {
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let body = '';
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res.setEncoding('utf8');
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res.on('data', (chunk) => body += chunk);
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res.on('end', () => resolve(body));
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}).on('error', (e) => {
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console.error(e.message);
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reject(e);
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});
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});
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const fetched_names = new Set();
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const get_functions = async (name) => {
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const res = [];
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if (fetched_names.has(name)) return res;
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fetched_names.add(name);
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const body = await do_get(get_url(name));
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const { functions, references } = extract_functions_and_references(name, body);
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res.push(...functions);
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const chile_functions = await Promise.all(references.map(get_functions));
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chile_functions.forEach(i => res.push(...i));
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return res;
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};
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const build_output = (functions) => {
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const sorted = Array.from(new Set(functions.sort()));
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return `\
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/** ----------------------------------------------------------------------
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This file is automatically generated by \`scripts/globals-extractor.mjs\`.
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Generated At: ${new Date().toISOString()}
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---------------------------------------------------------------------- */
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export default new Set([
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${sorted.map((i) => `\t'${i}'`).join(',\n')}
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]);
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`;
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};
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const get_exists_globals = () => {
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const regexp = /^\s*["'](.+)["'],?\s*$/;
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return fs.readFileSync(GLOBAL_TS_PATH, 'utf8')
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.split('\n')
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.filter(line => line.match(regexp))
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.map(line => line.match(regexp)[1]);
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};
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(async () => {
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const globals = get_exists_globals();
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const new_globals = await get_functions('es2021.full');
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globals.forEach((g) => new_globals.push(g));
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SPECIALS.forEach((g) => new_globals.push(g));
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fs.writeFileSync(GLOBAL_TS_PATH, build_output(new_globals));
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})();
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