mirror of https://github.com/webpack/webpack.git
1131 lines
34 KiB
JavaScript
1131 lines
34 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 InitFragment = require("./InitFragment");
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const RuntimeGlobals = require("./RuntimeGlobals");
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const Template = require("./Template");
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const { equals } = require("./util/ArrayHelpers");
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const compileBooleanMatcher = require("./util/compileBooleanMatcher");
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const propertyAccess = require("./util/propertyAccess");
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const { forEachRuntime, subtractRuntime } = require("./util/runtime");
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/** @typedef {import("../declarations/WebpackOptions").Environment} Environment */
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/** @typedef {import("../declarations/WebpackOptions").OutputNormalized} OutputOptions */
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/** @typedef {import("./AsyncDependenciesBlock")} AsyncDependenciesBlock */
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/** @typedef {import("./Chunk")} Chunk */
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/** @typedef {import("./ChunkGraph")} ChunkGraph */
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/** @typedef {import("./CodeGenerationResults")} CodeGenerationResults */
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/** @typedef {import("./CodeGenerationResults").CodeGenerationResult} CodeGenerationResult */
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/** @typedef {import("./Compilation")} Compilation */
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/** @typedef {import("./Dependency")} Dependency */
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/** @typedef {import("./Module")} Module */
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/** @typedef {import("./Module").BuildMeta} BuildMeta */
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/** @typedef {import("./ModuleGraph")} ModuleGraph */
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/** @typedef {import("./RequestShortener")} RequestShortener */
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/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
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/**
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* @param {Module} module the module
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* @param {ChunkGraph} chunkGraph the chunk graph
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* @returns {string} error message
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*/
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const noModuleIdErrorMessage = (module, chunkGraph) => {
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return `Module ${module.identifier()} has no id assigned.
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This should not happen.
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It's in these chunks: ${
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Array.from(
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chunkGraph.getModuleChunksIterable(module),
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c => c.name || c.id || c.debugId
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).join(", ") || "none"
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} (If module is in no chunk this indicates a bug in some chunk/module optimization logic)
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Module has these incoming connections: ${Array.from(
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chunkGraph.moduleGraph.getIncomingConnections(module),
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connection =>
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`\n - ${
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connection.originModule && connection.originModule.identifier()
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} ${connection.dependency && connection.dependency.type} ${
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(connection.explanations &&
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Array.from(connection.explanations).join(", ")) ||
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""
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}`
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).join("")}`;
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};
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/**
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* @param {string | undefined} definition global object definition
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* @returns {string | undefined} save to use global object
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*/
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function getGlobalObject(definition) {
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if (!definition) return definition;
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const trimmed = definition.trim();
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if (
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// identifier, we do not need real identifier regarding ECMAScript/Unicode
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trimmed.match(/^[_\p{L}][_0-9\p{L}]*$/iu) ||
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// iife
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// call expression
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// expression in parentheses
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trimmed.match(/^([_\p{L}][_0-9\p{L}]*)?\(.*\)$/iu)
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)
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return trimmed;
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return `Object(${trimmed})`;
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}
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class RuntimeTemplate {
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/**
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* @param {Compilation} compilation the compilation
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* @param {OutputOptions} outputOptions the compilation output options
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* @param {RequestShortener} requestShortener the request shortener
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*/
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constructor(compilation, outputOptions, requestShortener) {
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this.compilation = compilation;
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this.outputOptions = outputOptions || {};
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this.requestShortener = requestShortener;
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this.globalObject =
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/** @type {string} */
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(getGlobalObject(outputOptions.globalObject));
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this.contentHashReplacement = "X".repeat(
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/** @type {NonNullable<OutputOptions["hashDigestLength"]>} */
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(outputOptions.hashDigestLength)
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);
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}
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isIIFE() {
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return this.outputOptions.iife;
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}
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isModule() {
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return this.outputOptions.module;
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}
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supportsConst() {
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return /** @type {Environment} */ (this.outputOptions.environment).const;
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}
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supportsArrowFunction() {
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return /** @type {Environment} */ (this.outputOptions.environment)
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.arrowFunction;
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}
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supportsAsyncFunction() {
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return /** @type {Environment} */ (this.outputOptions.environment)
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.asyncFunction;
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}
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supportsOptionalChaining() {
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return /** @type {Environment} */ (this.outputOptions.environment)
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.optionalChaining;
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}
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supportsForOf() {
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return /** @type {Environment} */ (this.outputOptions.environment).forOf;
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}
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supportsDestructuring() {
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return /** @type {Environment} */ (this.outputOptions.environment)
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.destructuring;
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}
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supportsBigIntLiteral() {
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return /** @type {Environment} */ (this.outputOptions.environment)
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.bigIntLiteral;
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}
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supportsDynamicImport() {
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return /** @type {Environment} */ (this.outputOptions.environment)
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.dynamicImport;
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}
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supportsEcmaScriptModuleSyntax() {
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return /** @type {Environment} */ (this.outputOptions.environment).module;
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}
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supportTemplateLiteral() {
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return /** @type {Environment} */ (this.outputOptions.environment)
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.templateLiteral;
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}
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/**
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* @param {string} returnValue return value
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* @param {string} args arguments
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* @returns {string} returning function
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*/
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returningFunction(returnValue, args = "") {
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return this.supportsArrowFunction()
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? `(${args}) => (${returnValue})`
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: `function(${args}) { return ${returnValue}; }`;
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}
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/**
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* @param {string} args arguments
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* @param {string | string[]} body body
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* @returns {string} basic function
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*/
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basicFunction(args, body) {
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return this.supportsArrowFunction()
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? `(${args}) => {\n${Template.indent(body)}\n}`
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: `function(${args}) {\n${Template.indent(body)}\n}`;
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}
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/**
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* @param {Array<string|{expr: string}>} args args
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* @returns {string} result expression
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*/
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concatenation(...args) {
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const len = args.length;
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if (len === 2) return this._es5Concatenation(args);
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if (len === 0) return '""';
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if (len === 1) {
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return typeof args[0] === "string"
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? JSON.stringify(args[0])
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: `"" + ${args[0].expr}`;
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}
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if (!this.supportTemplateLiteral()) return this._es5Concatenation(args);
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// cost comparison between template literal and concatenation:
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// both need equal surroundings: `xxx` vs "xxx"
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// template literal has constant cost of 3 chars for each expression
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// es5 concatenation has cost of 3 + n chars for n expressions in row
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// when a es5 concatenation ends with an expression it reduces cost by 3
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// when a es5 concatenation starts with an single expression it reduces cost by 3
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// e. g. `${a}${b}${c}` (3*3 = 9) is longer than ""+a+b+c ((3+3)-3 = 3)
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// e. g. `x${a}x${b}x${c}x` (3*3 = 9) is shorter than "x"+a+"x"+b+"x"+c+"x" (4+4+4 = 12)
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let templateCost = 0;
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let concatenationCost = 0;
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let lastWasExpr = false;
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for (const arg of args) {
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const isExpr = typeof arg !== "string";
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if (isExpr) {
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templateCost += 3;
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concatenationCost += lastWasExpr ? 1 : 4;
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}
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lastWasExpr = isExpr;
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}
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if (lastWasExpr) concatenationCost -= 3;
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if (typeof args[0] !== "string" && typeof args[1] === "string")
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concatenationCost -= 3;
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if (concatenationCost <= templateCost) return this._es5Concatenation(args);
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return `\`${args
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.map(arg => (typeof arg === "string" ? arg : `\${${arg.expr}}`))
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.join("")}\``;
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}
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/**
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* @param {Array<string|{expr: string}>} args args (len >= 2)
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* @returns {string} result expression
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* @private
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*/
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_es5Concatenation(args) {
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const str = args
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.map(arg => (typeof arg === "string" ? JSON.stringify(arg) : arg.expr))
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.join(" + ");
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// when the first two args are expression, we need to prepend "" + to force string
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// concatenation instead of number addition.
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return typeof args[0] !== "string" && typeof args[1] !== "string"
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? `"" + ${str}`
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: str;
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}
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/**
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* @param {string} expression expression
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* @param {string} args arguments
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* @returns {string} expression function code
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*/
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expressionFunction(expression, args = "") {
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return this.supportsArrowFunction()
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? `(${args}) => (${expression})`
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: `function(${args}) { ${expression}; }`;
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}
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/**
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* @returns {string} empty function code
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*/
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emptyFunction() {
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return this.supportsArrowFunction() ? "x => {}" : "function() {}";
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}
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/**
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* @param {string[]} items items
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* @param {string} value value
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* @returns {string} destructure array code
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*/
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destructureArray(items, value) {
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return this.supportsDestructuring()
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? `var [${items.join(", ")}] = ${value};`
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: Template.asString(
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items.map((item, i) => `var ${item} = ${value}[${i}];`)
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);
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}
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/**
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* @param {string[]} items items
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* @param {string} value value
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* @returns {string} destructure object code
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*/
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destructureObject(items, value) {
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return this.supportsDestructuring()
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? `var {${items.join(", ")}} = ${value};`
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: Template.asString(
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items.map(item => `var ${item} = ${value}${propertyAccess([item])};`)
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);
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}
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/**
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* @param {string} args arguments
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* @param {string} body body
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* @returns {string} IIFE code
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*/
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iife(args, body) {
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return `(${this.basicFunction(args, body)})()`;
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}
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/**
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* @param {string} variable variable
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* @param {string} array array
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* @param {string | string[]} body body
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* @returns {string} for each code
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*/
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forEach(variable, array, body) {
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return this.supportsForOf()
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? `for(const ${variable} of ${array}) {\n${Template.indent(body)}\n}`
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: `${array}.forEach(function(${variable}) {\n${Template.indent(
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body
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)}\n});`;
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}
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/**
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* Add a comment
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* @param {object} options Information content of the comment
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* @param {string=} options.request request string used originally
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* @param {string=} options.chunkName name of the chunk referenced
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* @param {string=} options.chunkReason reason information of the chunk
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* @param {string=} options.message additional message
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* @param {string=} options.exportName name of the export
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* @returns {string} comment
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*/
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comment({ request, chunkName, chunkReason, message, exportName }) {
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let content;
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if (this.outputOptions.pathinfo) {
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content = [message, request, chunkName, chunkReason]
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.filter(Boolean)
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.map(item => this.requestShortener.shorten(item))
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.join(" | ");
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} else {
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content = [message, chunkName, chunkReason]
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.filter(Boolean)
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.map(item => this.requestShortener.shorten(item))
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.join(" | ");
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}
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if (!content) return "";
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if (this.outputOptions.pathinfo) {
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return Template.toComment(content) + " ";
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} else {
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return Template.toNormalComment(content) + " ";
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}
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}
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/**
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* @param {object} options generation options
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* @param {string=} options.request request string used originally
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* @returns {string} generated error block
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*/
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throwMissingModuleErrorBlock({ request }) {
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const err = `Cannot find module '${request}'`;
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return `var e = new Error(${JSON.stringify(
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err
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)}); e.code = 'MODULE_NOT_FOUND'; throw e;`;
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}
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/**
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* @param {object} options generation options
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* @param {string=} options.request request string used originally
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* @returns {string} generated error function
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*/
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throwMissingModuleErrorFunction({ request }) {
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return `function webpackMissingModule() { ${this.throwMissingModuleErrorBlock(
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{ request }
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)} }`;
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}
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/**
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* @param {object} options generation options
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* @param {string=} options.request request string used originally
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* @returns {string} generated error IIFE
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*/
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missingModule({ request }) {
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return `Object(${this.throwMissingModuleErrorFunction({ request })}())`;
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}
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/**
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* @param {object} options generation options
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* @param {string=} options.request request string used originally
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* @returns {string} generated error statement
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*/
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missingModuleStatement({ request }) {
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return `${this.missingModule({ request })};\n`;
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}
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/**
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* @param {object} options generation options
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* @param {string=} options.request request string used originally
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* @returns {string} generated error code
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*/
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missingModulePromise({ request }) {
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return `Promise.resolve().then(${this.throwMissingModuleErrorFunction({
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request
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})})`;
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}
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/**
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* @param {Object} options options object
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* @param {ChunkGraph} options.chunkGraph the chunk graph
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* @param {Module} options.module the module
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* @param {string=} options.request the request that should be printed as comment
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* @param {string=} options.idExpr expression to use as id expression
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* @param {"expression" | "promise" | "statements"} options.type which kind of code should be returned
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* @returns {string} the code
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*/
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weakError({ module, chunkGraph, request, idExpr, type }) {
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const moduleId = chunkGraph.getModuleId(module);
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const errorMessage =
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moduleId === null
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? JSON.stringify("Module is not available (weak dependency)")
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: idExpr
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? `"Module '" + ${idExpr} + "' is not available (weak dependency)"`
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: JSON.stringify(
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`Module '${moduleId}' is not available (weak dependency)`
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);
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const comment = request ? Template.toNormalComment(request) + " " : "";
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const errorStatements =
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`var e = new Error(${errorMessage}); ` +
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comment +
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"e.code = 'MODULE_NOT_FOUND'; throw e;";
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switch (type) {
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case "statements":
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return errorStatements;
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case "promise":
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return `Promise.resolve().then(${this.basicFunction(
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"",
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errorStatements
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)})`;
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case "expression":
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return this.iife("", errorStatements);
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}
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}
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/**
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* @param {Object} options options object
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* @param {Module} options.module the module
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* @param {ChunkGraph} options.chunkGraph the chunk graph
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* @param {string=} options.request the request that should be printed as comment
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* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
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* @returns {string} the expression
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*/
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moduleId({ module, chunkGraph, request, weak }) {
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if (!module) {
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return this.missingModule({
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request
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});
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}
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const moduleId = chunkGraph.getModuleId(module);
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if (moduleId === null) {
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if (weak) {
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return "null /* weak dependency, without id */";
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}
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throw new Error(
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`RuntimeTemplate.moduleId(): ${noModuleIdErrorMessage(
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module,
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chunkGraph
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)}`
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);
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}
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return `${this.comment({ request })}${JSON.stringify(moduleId)}`;
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}
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|
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/**
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* @param {Object} options options object
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* @param {Module | null} options.module the module
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* @param {ChunkGraph} options.chunkGraph the chunk graph
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|
* @param {string=} options.request the request that should be printed as comment
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* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
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* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
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* @returns {string} the expression
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*/
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moduleRaw({ module, chunkGraph, request, weak, runtimeRequirements }) {
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if (!module) {
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return this.missingModule({
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request
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});
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}
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const moduleId = chunkGraph.getModuleId(module);
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if (moduleId === null) {
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if (weak) {
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// only weak referenced modules don't get an id
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// we can always emit an error emitting code here
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return this.weakError({
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module,
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chunkGraph,
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request,
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type: "expression"
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});
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}
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throw new Error(
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`RuntimeTemplate.moduleId(): ${noModuleIdErrorMessage(
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module,
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chunkGraph
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)}`
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);
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}
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runtimeRequirements.add(RuntimeGlobals.require);
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return `${RuntimeGlobals.require}(${this.moduleId({
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module,
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chunkGraph,
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request,
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weak
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})})`;
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}
|
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|
|
/**
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|
* @param {Object} options options object
|
|
* @param {Module | null} options.module the module
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|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @param {string} options.request the request that should be printed as comment
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|
* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
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* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
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* @returns {string} the expression
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*/
|
|
moduleExports({ module, chunkGraph, request, weak, runtimeRequirements }) {
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return this.moduleRaw({
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module,
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chunkGraph,
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request,
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weak,
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runtimeRequirements
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});
|
|
}
|
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|
|
/**
|
|
* @param {Object} options options object
|
|
* @param {Module} options.module the module
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|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @param {string} options.request the request that should be printed as comment
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|
* @param {boolean=} options.strict if the current module is in strict esm mode
|
|
* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @returns {string} the expression
|
|
*/
|
|
moduleNamespace({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
strict,
|
|
weak,
|
|
runtimeRequirements
|
|
}) {
|
|
if (!module) {
|
|
return this.missingModule({
|
|
request
|
|
});
|
|
}
|
|
if (chunkGraph.getModuleId(module) === null) {
|
|
if (weak) {
|
|
// only weak referenced modules don't get an id
|
|
// we can always emit an error emitting code here
|
|
return this.weakError({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
type: "expression"
|
|
});
|
|
}
|
|
throw new Error(
|
|
`RuntimeTemplate.moduleNamespace(): ${noModuleIdErrorMessage(
|
|
module,
|
|
chunkGraph
|
|
)}`
|
|
);
|
|
}
|
|
const moduleId = this.moduleId({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
weak
|
|
});
|
|
const exportsType = module.getExportsType(chunkGraph.moduleGraph, strict);
|
|
switch (exportsType) {
|
|
case "namespace":
|
|
return this.moduleRaw({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
weak,
|
|
runtimeRequirements
|
|
});
|
|
case "default-with-named":
|
|
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
|
|
return `${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 3)`;
|
|
case "default-only":
|
|
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
|
|
return `${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 1)`;
|
|
case "dynamic":
|
|
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
|
|
return `${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 7)`;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options object
|
|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @param {AsyncDependenciesBlock=} options.block the current dependencies block
|
|
* @param {Module} options.module the module
|
|
* @param {string} options.request the request that should be printed as comment
|
|
* @param {string} options.message a message for the comment
|
|
* @param {boolean=} options.strict if the current module is in strict esm mode
|
|
* @param {boolean=} options.weak if the dependency is weak (will create a nice error message)
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @returns {string} the promise expression
|
|
*/
|
|
moduleNamespacePromise({
|
|
chunkGraph,
|
|
block,
|
|
module,
|
|
request,
|
|
message,
|
|
strict,
|
|
weak,
|
|
runtimeRequirements
|
|
}) {
|
|
if (!module) {
|
|
return this.missingModulePromise({
|
|
request
|
|
});
|
|
}
|
|
const moduleId = chunkGraph.getModuleId(module);
|
|
if (moduleId === null) {
|
|
if (weak) {
|
|
// only weak referenced modules don't get an id
|
|
// we can always emit an error emitting code here
|
|
return this.weakError({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
type: "promise"
|
|
});
|
|
}
|
|
throw new Error(
|
|
`RuntimeTemplate.moduleNamespacePromise(): ${noModuleIdErrorMessage(
|
|
module,
|
|
chunkGraph
|
|
)}`
|
|
);
|
|
}
|
|
const promise = this.blockPromise({
|
|
chunkGraph,
|
|
block,
|
|
message,
|
|
runtimeRequirements
|
|
});
|
|
|
|
let appending;
|
|
let idExpr = JSON.stringify(chunkGraph.getModuleId(module));
|
|
const comment = this.comment({
|
|
request
|
|
});
|
|
let header = "";
|
|
if (weak) {
|
|
if (idExpr.length > 8) {
|
|
// 'var x="nnnnnn";x,"+x+",x' vs '"nnnnnn",nnnnnn,"nnnnnn"'
|
|
header += `var id = ${idExpr}; `;
|
|
idExpr = "id";
|
|
}
|
|
runtimeRequirements.add(RuntimeGlobals.moduleFactories);
|
|
header += `if(!${
|
|
RuntimeGlobals.moduleFactories
|
|
}[${idExpr}]) { ${this.weakError({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
idExpr,
|
|
type: "statements"
|
|
})} } `;
|
|
}
|
|
const moduleIdExpr = this.moduleId({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
weak
|
|
});
|
|
const exportsType = module.getExportsType(chunkGraph.moduleGraph, strict);
|
|
let fakeType = 16;
|
|
switch (exportsType) {
|
|
case "namespace":
|
|
if (header) {
|
|
const rawModule = this.moduleRaw({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
weak,
|
|
runtimeRequirements
|
|
});
|
|
appending = `.then(${this.basicFunction(
|
|
"",
|
|
`${header}return ${rawModule};`
|
|
)})`;
|
|
} else {
|
|
runtimeRequirements.add(RuntimeGlobals.require);
|
|
appending = `.then(${RuntimeGlobals.require}.bind(${RuntimeGlobals.require}, ${comment}${idExpr}))`;
|
|
}
|
|
break;
|
|
case "dynamic":
|
|
fakeType |= 4;
|
|
/* fall through */
|
|
case "default-with-named":
|
|
fakeType |= 2;
|
|
/* fall through */
|
|
case "default-only":
|
|
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
|
|
if (chunkGraph.moduleGraph.isAsync(module)) {
|
|
if (header) {
|
|
const rawModule = this.moduleRaw({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
weak,
|
|
runtimeRequirements
|
|
});
|
|
appending = `.then(${this.basicFunction(
|
|
"",
|
|
`${header}return ${rawModule};`
|
|
)})`;
|
|
} else {
|
|
runtimeRequirements.add(RuntimeGlobals.require);
|
|
appending = `.then(${RuntimeGlobals.require}.bind(${RuntimeGlobals.require}, ${comment}${idExpr}))`;
|
|
}
|
|
appending += `.then(${this.returningFunction(
|
|
`${RuntimeGlobals.createFakeNamespaceObject}(m, ${fakeType})`,
|
|
"m"
|
|
)})`;
|
|
} else {
|
|
fakeType |= 1;
|
|
if (header) {
|
|
const returnExpression = `${RuntimeGlobals.createFakeNamespaceObject}(${moduleIdExpr}, ${fakeType})`;
|
|
appending = `.then(${this.basicFunction(
|
|
"",
|
|
`${header}return ${returnExpression};`
|
|
)})`;
|
|
} else {
|
|
appending = `.then(${RuntimeGlobals.createFakeNamespaceObject}.bind(${RuntimeGlobals.require}, ${comment}${idExpr}, ${fakeType}))`;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return `${promise || "Promise.resolve()"}${appending}`;
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options object
|
|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @param {RuntimeSpec=} options.runtime runtime for which this code will be generated
|
|
* @param {RuntimeSpec | boolean=} options.runtimeCondition only execute the statement in some runtimes
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @returns {string} expression
|
|
*/
|
|
runtimeConditionExpression({
|
|
chunkGraph,
|
|
runtimeCondition,
|
|
runtime,
|
|
runtimeRequirements
|
|
}) {
|
|
if (runtimeCondition === undefined) return "true";
|
|
if (typeof runtimeCondition === "boolean") return `${runtimeCondition}`;
|
|
/** @type {Set<string>} */
|
|
const positiveRuntimeIds = new Set();
|
|
forEachRuntime(runtimeCondition, runtime =>
|
|
positiveRuntimeIds.add(
|
|
`${chunkGraph.getRuntimeId(/** @type {string} */ (runtime))}`
|
|
)
|
|
);
|
|
/** @type {Set<string>} */
|
|
const negativeRuntimeIds = new Set();
|
|
forEachRuntime(subtractRuntime(runtime, runtimeCondition), runtime =>
|
|
negativeRuntimeIds.add(
|
|
`${chunkGraph.getRuntimeId(/** @type {string} */ (runtime))}`
|
|
)
|
|
);
|
|
runtimeRequirements.add(RuntimeGlobals.runtimeId);
|
|
return compileBooleanMatcher.fromLists(
|
|
Array.from(positiveRuntimeIds),
|
|
Array.from(negativeRuntimeIds)
|
|
)(RuntimeGlobals.runtimeId);
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param {Object} options options object
|
|
* @param {boolean=} options.update whether a new variable should be created or the existing one updated
|
|
* @param {Module} options.module the module
|
|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @param {string} options.request the request that should be printed as comment
|
|
* @param {string} options.importVar name of the import variable
|
|
* @param {Module} options.originModule module in which the statement is emitted
|
|
* @param {boolean=} options.weak true, if this is a weak dependency
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @returns {[string, string]} the import statement and the compat statement
|
|
*/
|
|
importStatement({
|
|
update,
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
importVar,
|
|
originModule,
|
|
weak,
|
|
runtimeRequirements
|
|
}) {
|
|
if (!module) {
|
|
return [
|
|
this.missingModuleStatement({
|
|
request
|
|
}),
|
|
""
|
|
];
|
|
}
|
|
if (chunkGraph.getModuleId(module) === null) {
|
|
if (weak) {
|
|
// only weak referenced modules don't get an id
|
|
// we can always emit an error emitting code here
|
|
return [
|
|
this.weakError({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
type: "statements"
|
|
}),
|
|
""
|
|
];
|
|
}
|
|
throw new Error(
|
|
`RuntimeTemplate.importStatement(): ${noModuleIdErrorMessage(
|
|
module,
|
|
chunkGraph
|
|
)}`
|
|
);
|
|
}
|
|
const moduleId = this.moduleId({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
weak
|
|
});
|
|
const optDeclaration = update ? "" : "var ";
|
|
|
|
const exportsType = module.getExportsType(
|
|
chunkGraph.moduleGraph,
|
|
/** @type {BuildMeta} */
|
|
(originModule.buildMeta).strictHarmonyModule
|
|
);
|
|
runtimeRequirements.add(RuntimeGlobals.require);
|
|
const importContent = `/* harmony import */ ${optDeclaration}${importVar} = ${RuntimeGlobals.require}(${moduleId});\n`;
|
|
|
|
if (exportsType === "dynamic") {
|
|
runtimeRequirements.add(RuntimeGlobals.compatGetDefaultExport);
|
|
return [
|
|
importContent,
|
|
`/* harmony import */ ${optDeclaration}${importVar}_default = /*#__PURE__*/${RuntimeGlobals.compatGetDefaultExport}(${importVar});\n`
|
|
];
|
|
}
|
|
return [importContent, ""];
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options
|
|
* @param {ModuleGraph} options.moduleGraph the module graph
|
|
* @param {Module} options.module the module
|
|
* @param {string} options.request the request
|
|
* @param {string | string[]} options.exportName the export name
|
|
* @param {Module} options.originModule the origin module
|
|
* @param {boolean|undefined} options.asiSafe true, if location is safe for ASI, a bracket can be emitted
|
|
* @param {boolean} options.isCall true, if expression will be called
|
|
* @param {boolean | null} options.callContext when false, call context will not be preserved
|
|
* @param {boolean} options.defaultInterop when true and accessing the default exports, interop code will be generated
|
|
* @param {string} options.importVar the identifier name of the import variable
|
|
* @param {InitFragment<TODO>[]} options.initFragments init fragments will be added here
|
|
* @param {RuntimeSpec} options.runtime runtime for which this code will be generated
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @returns {string} expression
|
|
*/
|
|
exportFromImport({
|
|
moduleGraph,
|
|
module,
|
|
request,
|
|
exportName,
|
|
originModule,
|
|
asiSafe,
|
|
isCall,
|
|
callContext,
|
|
defaultInterop,
|
|
importVar,
|
|
initFragments,
|
|
runtime,
|
|
runtimeRequirements
|
|
}) {
|
|
if (!module) {
|
|
return this.missingModule({
|
|
request
|
|
});
|
|
}
|
|
if (!Array.isArray(exportName)) {
|
|
exportName = exportName ? [exportName] : [];
|
|
}
|
|
const exportsType = module.getExportsType(
|
|
moduleGraph,
|
|
/** @type {BuildMeta} */
|
|
(originModule.buildMeta).strictHarmonyModule
|
|
);
|
|
|
|
if (defaultInterop) {
|
|
if (exportName.length > 0 && exportName[0] === "default") {
|
|
switch (exportsType) {
|
|
case "dynamic":
|
|
if (isCall) {
|
|
return `${importVar}_default()${propertyAccess(exportName, 1)}`;
|
|
} else {
|
|
return asiSafe
|
|
? `(${importVar}_default()${propertyAccess(exportName, 1)})`
|
|
: asiSafe === false
|
|
? `;(${importVar}_default()${propertyAccess(exportName, 1)})`
|
|
: `${importVar}_default.a${propertyAccess(exportName, 1)}`;
|
|
}
|
|
case "default-only":
|
|
case "default-with-named":
|
|
exportName = exportName.slice(1);
|
|
break;
|
|
}
|
|
} else if (exportName.length > 0) {
|
|
if (exportsType === "default-only") {
|
|
return (
|
|
"/* non-default import from non-esm module */undefined" +
|
|
propertyAccess(exportName, 1)
|
|
);
|
|
} else if (
|
|
exportsType !== "namespace" &&
|
|
exportName[0] === "__esModule"
|
|
) {
|
|
return "/* __esModule */true";
|
|
}
|
|
} else if (
|
|
exportsType === "default-only" ||
|
|
exportsType === "default-with-named"
|
|
) {
|
|
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
|
|
initFragments.push(
|
|
new InitFragment(
|
|
`var ${importVar}_namespace_cache;\n`,
|
|
InitFragment.STAGE_CONSTANTS,
|
|
-1,
|
|
`${importVar}_namespace_cache`
|
|
)
|
|
);
|
|
return `/*#__PURE__*/ ${
|
|
asiSafe ? "" : asiSafe === false ? ";" : "Object"
|
|
}(${importVar}_namespace_cache || (${importVar}_namespace_cache = ${
|
|
RuntimeGlobals.createFakeNamespaceObject
|
|
}(${importVar}${exportsType === "default-only" ? "" : ", 2"})))`;
|
|
}
|
|
}
|
|
|
|
if (exportName.length > 0) {
|
|
const exportsInfo = moduleGraph.getExportsInfo(module);
|
|
const used = exportsInfo.getUsedName(exportName, runtime);
|
|
if (!used) {
|
|
const comment = Template.toNormalComment(
|
|
`unused export ${propertyAccess(exportName)}`
|
|
);
|
|
return `${comment} undefined`;
|
|
}
|
|
const comment = equals(used, exportName)
|
|
? ""
|
|
: Template.toNormalComment(propertyAccess(exportName)) + " ";
|
|
const access = `${importVar}${comment}${propertyAccess(used)}`;
|
|
if (isCall && callContext === false) {
|
|
return asiSafe
|
|
? `(0,${access})`
|
|
: asiSafe === false
|
|
? `;(0,${access})`
|
|
: `/*#__PURE__*/Object(${access})`;
|
|
}
|
|
return access;
|
|
} else {
|
|
return importVar;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options
|
|
* @param {AsyncDependenciesBlock | undefined} options.block the async block
|
|
* @param {string} options.message the message
|
|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @returns {string} expression
|
|
*/
|
|
blockPromise({ block, message, chunkGraph, runtimeRequirements }) {
|
|
if (!block) {
|
|
const comment = this.comment({
|
|
message
|
|
});
|
|
return `Promise.resolve(${comment.trim()})`;
|
|
}
|
|
const chunkGroup = chunkGraph.getBlockChunkGroup(block);
|
|
if (!chunkGroup || chunkGroup.chunks.length === 0) {
|
|
const comment = this.comment({
|
|
message
|
|
});
|
|
return `Promise.resolve(${comment.trim()})`;
|
|
}
|
|
const chunks = chunkGroup.chunks.filter(
|
|
chunk => !chunk.hasRuntime() && chunk.id !== null
|
|
);
|
|
const comment = this.comment({
|
|
message,
|
|
chunkName: block.chunkName
|
|
});
|
|
if (chunks.length === 1) {
|
|
const chunkId = JSON.stringify(chunks[0].id);
|
|
runtimeRequirements.add(RuntimeGlobals.ensureChunk);
|
|
|
|
const fetchPriority = chunkGroup.options.fetchPriority;
|
|
|
|
if (fetchPriority) {
|
|
runtimeRequirements.add(RuntimeGlobals.hasFetchPriority);
|
|
}
|
|
|
|
return `${RuntimeGlobals.ensureChunk}(${comment}${chunkId}${
|
|
fetchPriority ? `, ${JSON.stringify(fetchPriority)}` : ""
|
|
})`;
|
|
} else if (chunks.length > 0) {
|
|
runtimeRequirements.add(RuntimeGlobals.ensureChunk);
|
|
|
|
const fetchPriority = chunkGroup.options.fetchPriority;
|
|
|
|
if (fetchPriority) {
|
|
runtimeRequirements.add(RuntimeGlobals.hasFetchPriority);
|
|
}
|
|
|
|
/**
|
|
* @param {Chunk} chunk chunk
|
|
* @returns {string} require chunk id code
|
|
*/
|
|
const requireChunkId = chunk =>
|
|
`${RuntimeGlobals.ensureChunk}(${JSON.stringify(chunk.id)}${
|
|
fetchPriority ? `, ${JSON.stringify(fetchPriority)}` : ""
|
|
})`;
|
|
return `Promise.all(${comment.trim()}[${chunks
|
|
.map(requireChunkId)
|
|
.join(", ")}])`;
|
|
} else {
|
|
return `Promise.resolve(${comment.trim()})`;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options
|
|
* @param {AsyncDependenciesBlock} options.block the async block
|
|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @param {string=} options.request request string used originally
|
|
* @returns {string} expression
|
|
*/
|
|
asyncModuleFactory({ block, chunkGraph, runtimeRequirements, request }) {
|
|
const dep = block.dependencies[0];
|
|
const module = chunkGraph.moduleGraph.getModule(dep);
|
|
const ensureChunk = this.blockPromise({
|
|
block,
|
|
message: "",
|
|
chunkGraph,
|
|
runtimeRequirements
|
|
});
|
|
const factory = this.returningFunction(
|
|
this.moduleRaw({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
runtimeRequirements
|
|
})
|
|
);
|
|
return this.returningFunction(
|
|
ensureChunk.startsWith("Promise.resolve(")
|
|
? `${factory}`
|
|
: `${ensureChunk}.then(${this.returningFunction(factory)})`
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options
|
|
* @param {Dependency} options.dependency the dependency
|
|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @param {string=} options.request request string used originally
|
|
* @returns {string} expression
|
|
*/
|
|
syncModuleFactory({ dependency, chunkGraph, runtimeRequirements, request }) {
|
|
const module = chunkGraph.moduleGraph.getModule(dependency);
|
|
const factory = this.returningFunction(
|
|
this.moduleRaw({
|
|
module,
|
|
chunkGraph,
|
|
request,
|
|
runtimeRequirements
|
|
})
|
|
);
|
|
return this.returningFunction(factory);
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options
|
|
* @param {string} options.exportsArgument the name of the exports object
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @returns {string} statement
|
|
*/
|
|
defineEsModuleFlagStatement({ exportsArgument, runtimeRequirements }) {
|
|
runtimeRequirements.add(RuntimeGlobals.makeNamespaceObject);
|
|
runtimeRequirements.add(RuntimeGlobals.exports);
|
|
return `${RuntimeGlobals.makeNamespaceObject}(${exportsArgument});\n`;
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options object
|
|
* @param {Module} options.module the module
|
|
* @param {string} options.publicPath the public path
|
|
* @param {RuntimeSpec=} options.runtime runtime
|
|
* @param {CodeGenerationResults} options.codeGenerationResults the code generation results
|
|
* @returns {string} the url of the asset
|
|
*/
|
|
assetUrl({ publicPath, runtime, module, codeGenerationResults }) {
|
|
if (!module) {
|
|
return "data:,";
|
|
}
|
|
const codeGen = codeGenerationResults.get(module, runtime);
|
|
const data = /** @type {NonNullable<CodeGenerationResult["data"]>} */ (
|
|
codeGen.data
|
|
);
|
|
const url = data.get("url");
|
|
if (url) return url.toString();
|
|
const filename = data.get("filename");
|
|
return publicPath + filename;
|
|
}
|
|
}
|
|
|
|
module.exports = RuntimeTemplate;
|