708 lines
20 KiB
JavaScript
708 lines
20 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const {
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JAVASCRIPT_MODULE_TYPE_AUTO,
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JAVASCRIPT_MODULE_TYPE_ESM,
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JAVASCRIPT_MODULE_TYPE_DYNAMIC
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} = require("./ModuleTypeConstants");
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const RuntimeGlobals = require("./RuntimeGlobals");
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const WebpackError = require("./WebpackError");
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const ConstDependency = require("./dependencies/ConstDependency");
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const BasicEvaluatedExpression = require("./javascript/BasicEvaluatedExpression");
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const {
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evaluateToString,
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toConstantDependency
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} = require("./javascript/JavascriptParserHelpers");
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const createHash = require("./util/createHash");
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/** @typedef {import("estree").Expression} Expression */
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/** @typedef {import("./Compilation").ValueCacheVersion} ValueCacheVersion */
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/** @typedef {import("./Compiler")} Compiler */
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/** @typedef {import("./Module").BuildInfo} BuildInfo */
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/** @typedef {import("./NormalModule")} NormalModule */
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/** @typedef {import("./RuntimeTemplate")} RuntimeTemplate */
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/** @typedef {import("./javascript/JavascriptParser")} JavascriptParser */
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/** @typedef {import("./javascript/JavascriptParser").DestructuringAssignmentProperty} DestructuringAssignmentProperty */
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/** @typedef {import("./javascript/JavascriptParser").Range} Range */
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/** @typedef {import("./logging/Logger").Logger} Logger */
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/** @typedef {import("./util/createHash").Algorithm} Algorithm */
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/** @typedef {null|undefined|RegExp|Function|string|number|boolean|bigint|undefined} CodeValuePrimitive */
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/** @typedef {RecursiveArrayOrRecord<CodeValuePrimitive|RuntimeValue>} CodeValue */
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/**
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* @typedef {object} RuntimeValueOptions
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* @property {string[]=} fileDependencies
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* @property {string[]=} contextDependencies
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* @property {string[]=} missingDependencies
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* @property {string[]=} buildDependencies
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* @property {string|function(): string=} version
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*/
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/** @typedef {function({ module: NormalModule, key: string, readonly version: ValueCacheVersion }): CodeValuePrimitive} GeneratorFn */
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class RuntimeValue {
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/**
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* @param {GeneratorFn} fn generator function
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* @param {true | string[] | RuntimeValueOptions=} options options
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*/
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constructor(fn, options) {
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this.fn = fn;
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if (Array.isArray(options)) {
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options = {
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fileDependencies: options
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};
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}
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this.options = options || {};
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}
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get fileDependencies() {
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return this.options === true ? true : this.options.fileDependencies;
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}
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/**
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* @param {JavascriptParser} parser the parser
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* @param {Map<string, ValueCacheVersion>} valueCacheVersions valueCacheVersions
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* @param {string} key the defined key
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* @returns {CodeValuePrimitive} code
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*/
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exec(parser, valueCacheVersions, key) {
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const buildInfo = /** @type {BuildInfo} */ (parser.state.module.buildInfo);
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if (this.options === true) {
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buildInfo.cacheable = false;
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} else {
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if (this.options.fileDependencies) {
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for (const dep of this.options.fileDependencies) {
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/** @type {NonNullable<BuildInfo["fileDependencies"]>} */
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(buildInfo.fileDependencies).add(dep);
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}
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}
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if (this.options.contextDependencies) {
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for (const dep of this.options.contextDependencies) {
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/** @type {NonNullable<BuildInfo["contextDependencies"]>} */
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(buildInfo.contextDependencies).add(dep);
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}
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}
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if (this.options.missingDependencies) {
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for (const dep of this.options.missingDependencies) {
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/** @type {NonNullable<BuildInfo["missingDependencies"]>} */
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(buildInfo.missingDependencies).add(dep);
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}
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}
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if (this.options.buildDependencies) {
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for (const dep of this.options.buildDependencies) {
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/** @type {NonNullable<BuildInfo["buildDependencies"]>} */
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(buildInfo.buildDependencies).add(dep);
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}
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}
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}
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return this.fn({
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module: parser.state.module,
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key,
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get version() {
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return valueCacheVersions.get(VALUE_DEP_PREFIX + key);
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}
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});
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}
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getCacheVersion() {
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return this.options === true
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? undefined
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: (typeof this.options.version === "function"
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? this.options.version()
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: this.options.version) || "unset";
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}
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}
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/**
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* @param {Set<DestructuringAssignmentProperty> | undefined} properties properties
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* @returns {Set<string> | undefined} used keys
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*/
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function getObjKeys(properties) {
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if (!properties) return;
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return new Set([...properties].map(p => p.id));
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}
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/** @typedef {Set<string> | null} ObjKeys */
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/** @typedef {boolean | undefined | null} AsiSafe */
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/**
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* @param {any[]|{[k: string]: any}} obj obj
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* @param {JavascriptParser} parser Parser
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* @param {Map<string, ValueCacheVersion>} valueCacheVersions valueCacheVersions
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* @param {string} key the defined key
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* @param {RuntimeTemplate} runtimeTemplate the runtime template
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* @param {Logger} logger the logger object
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* @param {AsiSafe=} asiSafe asi safe (undefined: unknown, null: unneeded)
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* @param {ObjKeys=} objKeys used keys
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* @returns {string} code converted to string that evaluates
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*/
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const stringifyObj = (
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obj,
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parser,
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valueCacheVersions,
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key,
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runtimeTemplate,
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logger,
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asiSafe,
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objKeys
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) => {
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let code;
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const arr = Array.isArray(obj);
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if (arr) {
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code = `[${
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/** @type {any[]} */ (obj)
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.map(code =>
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toCode(
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code,
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parser,
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valueCacheVersions,
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key,
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runtimeTemplate,
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logger,
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null
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)
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)
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.join(",")
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}]`;
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} else {
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let keys = Object.keys(obj);
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if (objKeys) {
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keys = objKeys.size === 0 ? [] : keys.filter(k => objKeys.has(k));
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}
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code = `{${keys
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.map(key => {
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const code = /** @type {{[k: string]: any}} */ (obj)[key];
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return `${JSON.stringify(key)}:${toCode(
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code,
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parser,
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valueCacheVersions,
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key,
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runtimeTemplate,
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logger,
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null
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)}`;
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})
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.join(",")}}`;
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}
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switch (asiSafe) {
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case null:
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return code;
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case true:
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return arr ? code : `(${code})`;
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case false:
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return arr ? `;${code}` : `;(${code})`;
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default:
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return `/*#__PURE__*/Object(${code})`;
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}
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};
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/**
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* Convert code to a string that evaluates
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* @param {CodeValue} code Code to evaluate
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* @param {JavascriptParser} parser Parser
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* @param {Map<string, ValueCacheVersion>} valueCacheVersions valueCacheVersions
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* @param {string} key the defined key
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* @param {RuntimeTemplate} runtimeTemplate the runtime template
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* @param {Logger} logger the logger object
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* @param {boolean | undefined | null=} asiSafe asi safe (undefined: unknown, null: unneeded)
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* @param {ObjKeys=} objKeys used keys
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* @returns {string} code converted to string that evaluates
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*/
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const toCode = (
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code,
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parser,
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valueCacheVersions,
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key,
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runtimeTemplate,
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logger,
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asiSafe,
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objKeys
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) => {
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const transformToCode = () => {
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if (code === null) {
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return "null";
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}
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if (code === undefined) {
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return "undefined";
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}
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if (Object.is(code, -0)) {
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return "-0";
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}
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if (code instanceof RuntimeValue) {
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return toCode(
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code.exec(parser, valueCacheVersions, key),
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parser,
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valueCacheVersions,
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key,
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runtimeTemplate,
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logger,
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asiSafe
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);
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}
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if (code instanceof RegExp && code.toString) {
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return code.toString();
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}
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if (typeof code === "function" && code.toString) {
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return `(${code.toString()})`;
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}
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if (typeof code === "object") {
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return stringifyObj(
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code,
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parser,
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valueCacheVersions,
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key,
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runtimeTemplate,
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logger,
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asiSafe,
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objKeys
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);
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}
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if (typeof code === "bigint") {
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return runtimeTemplate.supportsBigIntLiteral()
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? `${code}n`
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: `BigInt("${code}")`;
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}
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return `${code}`;
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};
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const strCode = transformToCode();
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logger.debug(`Replaced "${key}" with "${strCode}"`);
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return strCode;
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};
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/**
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* @param {CodeValue} code code
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* @returns {string | undefined} result
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*/
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const toCacheVersion = code => {
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if (code === null) {
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return "null";
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}
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if (code === undefined) {
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return "undefined";
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}
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if (Object.is(code, -0)) {
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return "-0";
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}
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if (code instanceof RuntimeValue) {
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return code.getCacheVersion();
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}
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if (code instanceof RegExp && code.toString) {
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return code.toString();
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}
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if (typeof code === "function" && code.toString) {
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return `(${code.toString()})`;
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}
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if (typeof code === "object") {
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const items = Object.keys(code).map(key => ({
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key,
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value: toCacheVersion(/** @type {Record<string, any>} */ (code)[key])
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}));
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if (items.some(({ value }) => value === undefined)) return;
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return `{${items.map(({ key, value }) => `${key}: ${value}`).join(", ")}}`;
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}
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if (typeof code === "bigint") {
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return `${code}n`;
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}
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return `${code}`;
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};
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const PLUGIN_NAME = "DefinePlugin";
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const VALUE_DEP_PREFIX = `webpack/${PLUGIN_NAME} `;
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const VALUE_DEP_MAIN = `webpack/${PLUGIN_NAME}_hash`;
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const TYPEOF_OPERATOR_REGEXP = /^typeof\s+/;
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const WEBPACK_REQUIRE_FUNCTION_REGEXP = new RegExp(
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`${RuntimeGlobals.require}\\s*(!?\\.)`
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);
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const WEBPACK_REQUIRE_IDENTIFIER_REGEXP = new RegExp(RuntimeGlobals.require);
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class DefinePlugin {
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/**
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* Create a new define plugin
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* @param {Record<string, CodeValue>} definitions A map of global object definitions
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*/
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constructor(definitions) {
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this.definitions = definitions;
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}
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/**
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* @param {GeneratorFn} fn generator function
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* @param {true | string[] | RuntimeValueOptions=} options options
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* @returns {RuntimeValue} runtime value
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*/
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static runtimeValue(fn, options) {
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return new RuntimeValue(fn, options);
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}
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/**
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* Apply the plugin
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* @param {Compiler} compiler the compiler instance
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* @returns {void}
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*/
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apply(compiler) {
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const definitions = this.definitions;
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compiler.hooks.compilation.tap(
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PLUGIN_NAME,
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(compilation, { normalModuleFactory }) => {
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const logger = compilation.getLogger("webpack.DefinePlugin");
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compilation.dependencyTemplates.set(
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ConstDependency,
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new ConstDependency.Template()
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);
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const { runtimeTemplate } = compilation;
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const mainHash = createHash(
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/** @type {Algorithm} */
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(compilation.outputOptions.hashFunction)
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);
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mainHash.update(
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/** @type {string} */
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(compilation.valueCacheVersions.get(VALUE_DEP_MAIN)) || ""
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);
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/**
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* Handler
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* @param {JavascriptParser} parser Parser
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* @returns {void}
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*/
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const handler = parser => {
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const mainValue = compilation.valueCacheVersions.get(VALUE_DEP_MAIN);
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parser.hooks.program.tap(PLUGIN_NAME, () => {
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const buildInfo = /** @type {BuildInfo} */ (
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parser.state.module.buildInfo
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);
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if (!buildInfo.valueDependencies)
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buildInfo.valueDependencies = new Map();
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buildInfo.valueDependencies.set(VALUE_DEP_MAIN, mainValue);
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});
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/**
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* @param {string} key key
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*/
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const addValueDependency = key => {
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const buildInfo =
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/** @type {BuildInfo} */
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(parser.state.module.buildInfo);
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/** @type {NonNullable<BuildInfo["valueDependencies"]>} */
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(buildInfo.valueDependencies).set(
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VALUE_DEP_PREFIX + key,
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compilation.valueCacheVersions.get(VALUE_DEP_PREFIX + key)
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);
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};
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/**
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* @template {Function} T
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* @param {string} key key
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* @param {T} fn fn
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* @returns {function(TODO): TODO} result
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*/
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const withValueDependency =
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(key, fn) =>
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(...args) => {
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addValueDependency(key);
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return fn(...args);
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};
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/**
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* Walk definitions
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* @param {Record<string, CodeValue>} definitions Definitions map
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* @param {string} prefix Prefix string
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* @returns {void}
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*/
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const walkDefinitions = (definitions, prefix) => {
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for (const key of Object.keys(definitions)) {
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const code = definitions[key];
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if (
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code &&
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typeof code === "object" &&
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!(code instanceof RuntimeValue) &&
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!(code instanceof RegExp)
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) {
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walkDefinitions(
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/** @type {Record<string, CodeValue>} */ (code),
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`${prefix + key}.`
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);
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applyObjectDefine(prefix + key, code);
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continue;
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}
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applyDefineKey(prefix, key);
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applyDefine(prefix + key, code);
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}
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};
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/**
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* Apply define key
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* @param {string} prefix Prefix
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* @param {string} key Key
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* @returns {void}
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*/
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const applyDefineKey = (prefix, key) => {
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const splittedKey = key.split(".");
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for (const [i, _] of splittedKey.slice(1).entries()) {
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const fullKey = prefix + splittedKey.slice(0, i + 1).join(".");
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parser.hooks.canRename.for(fullKey).tap(PLUGIN_NAME, () => {
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addValueDependency(key);
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return true;
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});
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}
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};
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/**
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* Apply Code
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* @param {string} key Key
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* @param {CodeValue} code Code
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* @returns {void}
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*/
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const applyDefine = (key, code) => {
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const originalKey = key;
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const isTypeof = TYPEOF_OPERATOR_REGEXP.test(key);
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if (isTypeof) key = key.replace(TYPEOF_OPERATOR_REGEXP, "");
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let recurse = false;
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let recurseTypeof = false;
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if (!isTypeof) {
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parser.hooks.canRename.for(key).tap(PLUGIN_NAME, () => {
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addValueDependency(originalKey);
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return true;
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});
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parser.hooks.evaluateIdentifier
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.for(key)
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.tap(PLUGIN_NAME, expr => {
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/**
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* this is needed in case there is a recursion in the DefinePlugin
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* to prevent an endless recursion
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* e.g.: new DefinePlugin({
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* "a": "b",
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* "b": "a"
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* });
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*/
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if (recurse) return;
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addValueDependency(originalKey);
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recurse = true;
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const res = parser.evaluate(
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toCode(
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code,
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parser,
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compilation.valueCacheVersions,
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key,
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runtimeTemplate,
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logger,
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null
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)
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);
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recurse = false;
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res.setRange(/** @type {Range} */ (expr.range));
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return res;
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});
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parser.hooks.expression.for(key).tap(PLUGIN_NAME, expr => {
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addValueDependency(originalKey);
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let strCode = toCode(
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code,
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parser,
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compilation.valueCacheVersions,
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originalKey,
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runtimeTemplate,
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logger,
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!parser.isAsiPosition(/** @type {Range} */ (expr.range)[0]),
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null
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);
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if (parser.scope.inShorthand) {
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strCode = `${parser.scope.inShorthand}:${strCode}`;
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}
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if (WEBPACK_REQUIRE_FUNCTION_REGEXP.test(strCode)) {
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return toConstantDependency(parser, strCode, [
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RuntimeGlobals.require
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])(expr);
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} else if (WEBPACK_REQUIRE_IDENTIFIER_REGEXP.test(strCode)) {
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return toConstantDependency(parser, strCode, [
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RuntimeGlobals.requireScope
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])(expr);
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}
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return toConstantDependency(parser, strCode)(expr);
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});
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}
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parser.hooks.evaluateTypeof.for(key).tap(PLUGIN_NAME, expr => {
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/**
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|
* this is needed in case there is a recursion in the DefinePlugin
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* to prevent an endless recursion
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|
* e.g.: new DefinePlugin({
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* "typeof a": "typeof b",
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* "typeof b": "typeof a"
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* });
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*/
|
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if (recurseTypeof) return;
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recurseTypeof = true;
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addValueDependency(originalKey);
|
|
const codeCode = toCode(
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code,
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parser,
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compilation.valueCacheVersions,
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originalKey,
|
|
runtimeTemplate,
|
|
logger,
|
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null
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);
|
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const typeofCode = isTypeof ? codeCode : `typeof (${codeCode})`;
|
|
const res = parser.evaluate(typeofCode);
|
|
recurseTypeof = false;
|
|
res.setRange(/** @type {Range} */ (expr.range));
|
|
return res;
|
|
});
|
|
parser.hooks.typeof.for(key).tap(PLUGIN_NAME, expr => {
|
|
addValueDependency(originalKey);
|
|
const codeCode = toCode(
|
|
code,
|
|
parser,
|
|
compilation.valueCacheVersions,
|
|
originalKey,
|
|
runtimeTemplate,
|
|
logger,
|
|
null
|
|
);
|
|
const typeofCode = isTypeof ? codeCode : `typeof (${codeCode})`;
|
|
const res = parser.evaluate(typeofCode);
|
|
if (!res.isString()) return;
|
|
return toConstantDependency(
|
|
parser,
|
|
JSON.stringify(res.string)
|
|
).bind(parser)(expr);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Apply Object
|
|
* @param {string} key Key
|
|
* @param {object} obj Object
|
|
* @returns {void}
|
|
*/
|
|
const applyObjectDefine = (key, obj) => {
|
|
parser.hooks.canRename.for(key).tap(PLUGIN_NAME, () => {
|
|
addValueDependency(key);
|
|
return true;
|
|
});
|
|
parser.hooks.evaluateIdentifier.for(key).tap(PLUGIN_NAME, expr => {
|
|
addValueDependency(key);
|
|
return new BasicEvaluatedExpression()
|
|
.setTruthy()
|
|
.setSideEffects(false)
|
|
.setRange(/** @type {Range} */ (expr.range));
|
|
});
|
|
parser.hooks.evaluateTypeof
|
|
.for(key)
|
|
.tap(
|
|
PLUGIN_NAME,
|
|
withValueDependency(key, evaluateToString("object"))
|
|
);
|
|
parser.hooks.expression.for(key).tap(PLUGIN_NAME, expr => {
|
|
addValueDependency(key);
|
|
let strCode = stringifyObj(
|
|
obj,
|
|
parser,
|
|
compilation.valueCacheVersions,
|
|
key,
|
|
runtimeTemplate,
|
|
logger,
|
|
!parser.isAsiPosition(/** @type {Range} */ (expr.range)[0]),
|
|
getObjKeys(parser.destructuringAssignmentPropertiesFor(expr))
|
|
);
|
|
|
|
if (parser.scope.inShorthand) {
|
|
strCode = `${parser.scope.inShorthand}:${strCode}`;
|
|
}
|
|
|
|
if (WEBPACK_REQUIRE_FUNCTION_REGEXP.test(strCode)) {
|
|
return toConstantDependency(parser, strCode, [
|
|
RuntimeGlobals.require
|
|
])(expr);
|
|
} else if (WEBPACK_REQUIRE_IDENTIFIER_REGEXP.test(strCode)) {
|
|
return toConstantDependency(parser, strCode, [
|
|
RuntimeGlobals.requireScope
|
|
])(expr);
|
|
}
|
|
return toConstantDependency(parser, strCode)(expr);
|
|
});
|
|
parser.hooks.typeof
|
|
.for(key)
|
|
.tap(
|
|
PLUGIN_NAME,
|
|
withValueDependency(
|
|
key,
|
|
toConstantDependency(parser, JSON.stringify("object"))
|
|
)
|
|
);
|
|
};
|
|
|
|
walkDefinitions(definitions, "");
|
|
};
|
|
|
|
normalModuleFactory.hooks.parser
|
|
.for(JAVASCRIPT_MODULE_TYPE_AUTO)
|
|
.tap(PLUGIN_NAME, handler);
|
|
normalModuleFactory.hooks.parser
|
|
.for(JAVASCRIPT_MODULE_TYPE_DYNAMIC)
|
|
.tap(PLUGIN_NAME, handler);
|
|
normalModuleFactory.hooks.parser
|
|
.for(JAVASCRIPT_MODULE_TYPE_ESM)
|
|
.tap(PLUGIN_NAME, handler);
|
|
|
|
/**
|
|
* Walk definitions
|
|
* @param {Record<string, CodeValue>} definitions Definitions map
|
|
* @param {string} prefix Prefix string
|
|
* @returns {void}
|
|
*/
|
|
const walkDefinitionsForValues = (definitions, prefix) => {
|
|
for (const key of Object.keys(definitions)) {
|
|
const code = definitions[key];
|
|
const version = toCacheVersion(code);
|
|
const name = VALUE_DEP_PREFIX + prefix + key;
|
|
mainHash.update(`|${prefix}${key}`);
|
|
const oldVersion = compilation.valueCacheVersions.get(name);
|
|
if (oldVersion === undefined) {
|
|
compilation.valueCacheVersions.set(name, version);
|
|
} else if (oldVersion !== version) {
|
|
const warning = new WebpackError(
|
|
`${PLUGIN_NAME}\nConflicting values for '${prefix + key}'`
|
|
);
|
|
warning.details = `'${oldVersion}' !== '${version}'`;
|
|
warning.hideStack = true;
|
|
compilation.warnings.push(warning);
|
|
}
|
|
if (
|
|
code &&
|
|
typeof code === "object" &&
|
|
!(code instanceof RuntimeValue) &&
|
|
!(code instanceof RegExp)
|
|
) {
|
|
walkDefinitionsForValues(
|
|
/** @type {Record<string, CodeValue>} */ (code),
|
|
`${prefix + key}.`
|
|
);
|
|
}
|
|
}
|
|
};
|
|
|
|
walkDefinitionsForValues(definitions, "");
|
|
|
|
compilation.valueCacheVersions.set(
|
|
VALUE_DEP_MAIN,
|
|
/** @type {string} */ (mainHash.digest("hex").slice(0, 8))
|
|
);
|
|
}
|
|
);
|
|
}
|
|
}
|
|
module.exports = DefinePlugin;
|