source: imaps-frontend/node_modules/webpack/lib/config/target.js@ 79a0317

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Last change on this file since 79a0317 was 79a0317, checked in by stefan toskovski <stefantoska84@…>, 3 days ago

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[79a0317]1/*
2 MIT License http://www.opensource.org/licenses/mit-license.php
3 Author Tobias Koppers @sokra
4*/
5
6"use strict";
7
8const memoize = require("../util/memoize");
9
10const getBrowserslistTargetHandler = memoize(() =>
11 require("./browserslistTargetHandler")
12);
13
14/**
15 * @param {string} context the context directory
16 * @returns {string} default target
17 */
18const getDefaultTarget = context => {
19 const browsers = getBrowserslistTargetHandler().load(null, context);
20 return browsers ? "browserslist" : "web";
21};
22
23/**
24 * @typedef {object} PlatformTargetProperties
25 * @property {boolean | null} web web platform, importing of http(s) and std: is available
26 * @property {boolean | null} browser browser platform, running in a normal web browser
27 * @property {boolean | null} webworker (Web)Worker platform, running in a web/shared/service worker
28 * @property {boolean | null} node node platform, require of node built-in modules is available
29 * @property {boolean | null} nwjs nwjs platform, require of legacy nw.gui is available
30 * @property {boolean | null} electron electron platform, require of some electron built-in modules is available
31 */
32
33/**
34 * @typedef {object} ElectronContextTargetProperties
35 * @property {boolean | null} electronMain in main context
36 * @property {boolean | null} electronPreload in preload context
37 * @property {boolean | null} electronRenderer in renderer context with node integration
38 */
39
40/**
41 * @typedef {object} ApiTargetProperties
42 * @property {boolean | null} require has require function available
43 * @property {boolean | null} nodeBuiltins has node.js built-in modules available
44 * @property {boolean | null} nodePrefixForCoreModules node.js allows to use `node:` prefix for core modules
45 * @property {boolean | null} document has document available (allows script tags)
46 * @property {boolean | null} importScripts has importScripts available
47 * @property {boolean | null} importScriptsInWorker has importScripts available when creating a worker
48 * @property {boolean | null} fetchWasm has fetch function available for WebAssembly
49 * @property {boolean | null} global has global variable available
50 */
51
52/**
53 * @typedef {object} EcmaTargetProperties
54 * @property {boolean | null} globalThis has globalThis variable available
55 * @property {boolean | null} bigIntLiteral big int literal syntax is available
56 * @property {boolean | null} const const and let variable declarations are available
57 * @property {boolean | null} arrowFunction arrow functions are available
58 * @property {boolean | null} forOf for of iteration is available
59 * @property {boolean | null} destructuring destructuring is available
60 * @property {boolean | null} dynamicImport async import() is available
61 * @property {boolean | null} dynamicImportInWorker async import() is available when creating a worker
62 * @property {boolean | null} module ESM syntax is available (when in module)
63 * @property {boolean | null} optionalChaining optional chaining is available
64 * @property {boolean | null} templateLiteral template literal is available
65 * @property {boolean | null} asyncFunction async functions and await are available
66 */
67
68/**
69 * @template T
70 * @typedef {{ [P in keyof T]?: never }} Never<T>
71 */
72
73/**
74 * @template A
75 * @template B
76 * @typedef {(A & Never<B>) | (Never<A> & B) | (A & B)} Mix<A, B>
77 */
78
79/** @typedef {Mix<Mix<PlatformTargetProperties, ElectronContextTargetProperties>, Mix<ApiTargetProperties, EcmaTargetProperties>>} TargetProperties */
80
81/**
82 * @param {string} major major version
83 * @param {string | undefined} minor minor version
84 * @returns {(vMajor: number, vMinor?: number) => boolean | undefined} check if version is greater or equal
85 */
86const versionDependent = (major, minor) => {
87 if (!major) {
88 return () => /** @type {undefined} */ (undefined);
89 }
90 /** @type {number} */
91 const nMajor = Number(major);
92 /** @type {number} */
93 const nMinor = minor ? Number(minor) : 0;
94 return (vMajor, vMinor = 0) =>
95 nMajor > vMajor || (nMajor === vMajor && nMinor >= vMinor);
96};
97
98/** @type {[string, string, RegExp, (...args: string[]) => Partial<TargetProperties>][]} */
99const TARGETS = [
100 [
101 "browserslist / browserslist:env / browserslist:query / browserslist:path-to-config / browserslist:path-to-config:env",
102 "Resolve features from browserslist. Will resolve browserslist config automatically. Only browser or node queries are supported (electron is not supported). Examples: 'browserslist:modern' to use 'modern' environment from browserslist config",
103 /^browserslist(?::(.+))?$/,
104 (rest, context) => {
105 const browserslistTargetHandler = getBrowserslistTargetHandler();
106 const browsers = browserslistTargetHandler.load(
107 rest ? rest.trim() : null,
108 context
109 );
110 if (!browsers) {
111 throw new Error(`No browserslist config found to handle the 'browserslist' target.
112See https://github.com/browserslist/browserslist#queries for possible ways to provide a config.
113The recommended way is to add a 'browserslist' key to your package.json and list supported browsers (resp. node.js versions).
114You can also more options via the 'target' option: 'browserslist' / 'browserslist:env' / 'browserslist:query' / 'browserslist:path-to-config' / 'browserslist:path-to-config:env'`);
115 }
116
117 return browserslistTargetHandler.resolve(browsers);
118 }
119 ],
120 [
121 "web",
122 "Web browser.",
123 /^web$/,
124 () => ({
125 node: false,
126 web: true,
127 webworker: null,
128 browser: true,
129 electron: false,
130 nwjs: false,
131
132 document: true,
133 importScriptsInWorker: true,
134 fetchWasm: true,
135 nodeBuiltins: false,
136 importScripts: false,
137 require: false,
138 global: false
139 })
140 ],
141 [
142 "webworker",
143 "Web Worker, SharedWorker or Service Worker.",
144 /^webworker$/,
145 () => ({
146 node: false,
147 web: true,
148 webworker: true,
149 browser: true,
150 electron: false,
151 nwjs: false,
152
153 importScripts: true,
154 importScriptsInWorker: true,
155 fetchWasm: true,
156 nodeBuiltins: false,
157 require: false,
158 document: false,
159 global: false
160 })
161 ],
162 [
163 "[async-]node[X[.Y]]",
164 "Node.js in version X.Y. The 'async-' prefix will load chunks asynchronously via 'fs' and 'vm' instead of 'require()'. Examples: node14.5, async-node10.",
165 /^(async-)?node((\d+)(?:\.(\d+))?)?$/,
166 (asyncFlag, _, major, minor) => {
167 const v = versionDependent(major, minor);
168 // see https://node.green/
169 return {
170 node: true,
171 web: false,
172 webworker: false,
173 browser: false,
174 electron: false,
175 nwjs: false,
176
177 require: !asyncFlag,
178 nodeBuiltins: true,
179 // v16.0.0, v14.18.0
180 nodePrefixForCoreModules: Number(major) < 15 ? v(14, 18) : v(16),
181 global: true,
182 document: false,
183 fetchWasm: false,
184 importScripts: false,
185 importScriptsInWorker: false,
186
187 globalThis: v(12),
188 const: v(6),
189 templateLiteral: v(4),
190 optionalChaining: v(14),
191 arrowFunction: v(6),
192 asyncFunction: v(7, 6),
193 forOf: v(5),
194 destructuring: v(6),
195 bigIntLiteral: v(10, 4),
196 dynamicImport: v(12, 17),
197 dynamicImportInWorker: major ? false : undefined,
198 module: v(12, 17)
199 };
200 }
201 ],
202 [
203 "electron[X[.Y]]-main/preload/renderer",
204 "Electron in version X.Y. Script is running in main, preload resp. renderer context.",
205 /^electron((\d+)(?:\.(\d+))?)?-(main|preload|renderer)$/,
206 (_, major, minor, context) => {
207 const v = versionDependent(major, minor);
208 // see https://node.green/ + https://github.com/electron/releases
209 return {
210 node: true,
211 web: context !== "main",
212 webworker: false,
213 browser: false,
214 electron: true,
215 nwjs: false,
216
217 electronMain: context === "main",
218 electronPreload: context === "preload",
219 electronRenderer: context === "renderer",
220
221 global: true,
222 nodeBuiltins: true,
223 // 15.0.0 - Node.js v16.5
224 // 14.0.0 - Mode.js v14.17, but prefixes only since v14.18
225 nodePrefixForCoreModules: v(15),
226
227 require: true,
228 document: context === "renderer",
229 fetchWasm: context === "renderer",
230 importScripts: false,
231 importScriptsInWorker: true,
232
233 globalThis: v(5),
234 const: v(1, 1),
235 templateLiteral: v(1, 1),
236 optionalChaining: v(8),
237 arrowFunction: v(1, 1),
238 asyncFunction: v(1, 7),
239 forOf: v(0, 36),
240 destructuring: v(1, 1),
241 bigIntLiteral: v(4),
242 dynamicImport: v(11),
243 dynamicImportInWorker: major ? false : undefined,
244 module: v(11)
245 };
246 }
247 ],
248 [
249 "nwjs[X[.Y]] / node-webkit[X[.Y]]",
250 "NW.js in version X.Y.",
251 /^(?:nwjs|node-webkit)((\d+)(?:\.(\d+))?)?$/,
252 (_, major, minor) => {
253 const v = versionDependent(major, minor);
254 // see https://node.green/ + https://github.com/nwjs/nw.js/blob/nw48/CHANGELOG.md
255 return {
256 node: true,
257 web: true,
258 webworker: null,
259 browser: false,
260 electron: false,
261 nwjs: true,
262
263 global: true,
264 nodeBuiltins: true,
265 document: false,
266 importScriptsInWorker: false,
267 fetchWasm: false,
268 importScripts: false,
269 require: false,
270
271 globalThis: v(0, 43),
272 const: v(0, 15),
273 templateLiteral: v(0, 13),
274 optionalChaining: v(0, 44),
275 arrowFunction: v(0, 15),
276 asyncFunction: v(0, 21),
277 forOf: v(0, 13),
278 destructuring: v(0, 15),
279 bigIntLiteral: v(0, 32),
280 dynamicImport: v(0, 43),
281 dynamicImportInWorker: major ? false : undefined,
282 module: v(0, 43)
283 };
284 }
285 ],
286 [
287 "esX",
288 "EcmaScript in this version. Examples: es2020, es5.",
289 /^es(\d+)$/,
290 version => {
291 let v = Number(version);
292 if (v < 1000) v = v + 2009;
293 return {
294 const: v >= 2015,
295 templateLiteral: v >= 2015,
296 optionalChaining: v >= 2020,
297 arrowFunction: v >= 2015,
298 forOf: v >= 2015,
299 destructuring: v >= 2015,
300 module: v >= 2015,
301 asyncFunction: v >= 2017,
302 globalThis: v >= 2020,
303 bigIntLiteral: v >= 2020,
304 dynamicImport: v >= 2020,
305 dynamicImportInWorker: v >= 2020
306 };
307 }
308 ]
309];
310
311/**
312 * @param {string} target the target
313 * @param {string} context the context directory
314 * @returns {TargetProperties} target properties
315 */
316const getTargetProperties = (target, context) => {
317 for (const [, , regExp, handler] of TARGETS) {
318 const match = regExp.exec(target);
319 if (match) {
320 const [, ...args] = match;
321 const result = handler(...args, context);
322 if (result) return /** @type {TargetProperties} */ (result);
323 }
324 }
325 throw new Error(
326 `Unknown target '${target}'. The following targets are supported:\n${TARGETS.map(
327 ([name, description]) => `* ${name}: ${description}`
328 ).join("\n")}`
329 );
330};
331
332/**
333 * @param {TargetProperties[]} targetProperties array of target properties
334 * @returns {TargetProperties} merged target properties
335 */
336const mergeTargetProperties = targetProperties => {
337 /** @type {Set<keyof TargetProperties>} */
338 const keys = new Set();
339 for (const tp of targetProperties) {
340 for (const key of Object.keys(tp)) {
341 keys.add(/** @type {keyof TargetProperties} */ (key));
342 }
343 }
344 /** @type {object} */
345 const result = {};
346 for (const key of keys) {
347 let hasTrue = false;
348 let hasFalse = false;
349 for (const tp of targetProperties) {
350 const value = tp[key];
351 switch (value) {
352 case true:
353 hasTrue = true;
354 break;
355 case false:
356 hasFalse = true;
357 break;
358 }
359 }
360 if (hasTrue || hasFalse)
361 /** @type {TargetProperties} */
362 (result)[key] = hasFalse && hasTrue ? null : Boolean(hasTrue);
363 }
364 return /** @type {TargetProperties} */ (result);
365};
366
367/**
368 * @param {string[]} targets the targets
369 * @param {string} context the context directory
370 * @returns {TargetProperties} target properties
371 */
372const getTargetsProperties = (targets, context) =>
373 mergeTargetProperties(targets.map(t => getTargetProperties(t, context)));
374
375module.exports.getDefaultTarget = getDefaultTarget;
376module.exports.getTargetProperties = getTargetProperties;
377module.exports.getTargetsProperties = getTargetsProperties;
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