650 lines
20 KiB
JavaScript
650 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 RuntimeGlobals = require("./RuntimeGlobals");
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const Template = require("./Template");
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const propertyAccess = require("./util/propertyAccess");
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/** @typedef {import("./AsyncDependenciesBlock")} AsyncDependenciesBlock */
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/** @typedef {import("./ChunkGraph")} ChunkGraph */
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/** @typedef {import("./Module")} Module */
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/** @typedef {import("./ModuleGraph")} ModuleGraph */
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/** @typedef {import("./RequestShortener")} RequestShortener */
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const arrayEquals = (a, b) => {
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if (a.length !== b.length) return false;
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for (let i = 0; i < a.length; i++) {
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if (a[i] !== b[i]) return false;
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}
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return true;
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};
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class RuntimeTemplate {
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/**
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* @param {TODO} outputOptions the compilation output options
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* @param {RequestShortener} requestShortener the request shortener
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*/
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constructor(outputOptions, requestShortener) {
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this.outputOptions = outputOptions || {};
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/** @type {RequestShortener} */
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this.requestShortener = requestShortener;
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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() { ${this.throwMissingModuleErrorBlock(
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{ request }
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)} }`;
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}
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/**
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* @param {object} options generation options
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* @param {string=} options.request request string used originally
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* @returns {string} generated error IIFE
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*/
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missingModule({ request }) {
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return `!(${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(function() { ${errorStatements} })`;
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case "expression":
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return `(function() { ${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(): Module ${module.identifier()} has no id. This should not happen.`
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);
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}
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return `${this.comment({ request })}${JSON.stringify(moduleId)}`;
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}
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/**
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* @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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* @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(): Module ${module.identifier()} has no id. This should not happen.`
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);
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}
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runtimeRequirements.add(RuntimeGlobals.require);
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return `__webpack_require__(${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
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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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* @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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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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}
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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.strict if the current module is in strict esm mode
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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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moduleNamespace({
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module,
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chunkGraph,
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request,
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strict,
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weak,
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runtimeRequirements
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}) {
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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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if (chunkGraph.getModuleId(module) === 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.moduleNamespace(): Module ${module.identifier()} has no id. This should not happen.`
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);
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}
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const moduleId = this.moduleId({
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module,
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chunkGraph,
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request,
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weak
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});
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const exportsType = module.buildMeta && module.buildMeta.exportsType;
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if (exportsType === "namespace") {
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const rawModule = this.moduleRaw({
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module,
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chunkGraph,
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request,
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weak,
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runtimeRequirements
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});
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return rawModule;
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} else if (exportsType === "named") {
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runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
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return `${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 3)`;
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} else if (strict) {
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runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
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return `${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 1)`;
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} else {
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runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
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return `${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 7)`;
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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 {AsyncDependenciesBlock=} options.block the current dependencies block
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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.message a message for the comment
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* @param {boolean=} options.strict if the current module is in strict esm mode
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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 promise expression
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*/
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moduleNamespacePromise({
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chunkGraph,
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block,
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module,
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request,
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message,
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strict,
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weak,
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runtimeRequirements
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}) {
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if (!module) {
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return this.missingModulePromise({
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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: "promise"
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});
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}
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throw new Error(
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`RuntimeTemplate.moduleNamespacePromise(): Module ${module.identifier()} has no id. This should not happen.`
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);
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}
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const promise = this.blockPromise({
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chunkGraph,
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block,
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message,
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runtimeRequirements
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});
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let getModuleFunction;
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let idExpr = JSON.stringify(chunkGraph.getModuleId(module));
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const comment = this.comment({
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request
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});
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let header = "";
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if (weak) {
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if (idExpr.length > 8) {
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// 'var x="nnnnnn";x,"+x+",x' vs '"nnnnnn",nnnnnn,"nnnnnn"'
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header += `var id = ${idExpr}; `;
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idExpr = "id";
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}
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runtimeRequirements.add(RuntimeGlobals.moduleFactories);
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header += `if(!${
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RuntimeGlobals.moduleFactories
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}[${idExpr}]) { ${this.weakError({
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module,
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chunkGraph,
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request,
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idExpr,
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type: "statements"
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})} } `;
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}
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const moduleIdExpr = 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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const exportsType = module.buildMeta && module.buildMeta.exportsType;
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if (exportsType === "namespace") {
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if (header) {
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const rawModule = 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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getModuleFunction = `function() { ${header}return ${rawModule}; }`;
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} else {
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runtimeRequirements.add(RuntimeGlobals.require);
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getModuleFunction = `__webpack_require__.bind(null, ${comment}${idExpr})`;
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}
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} else if (exportsType === "named") {
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runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
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if (header) {
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getModuleFunction = `function() { ${header}return ${RuntimeGlobals.createFakeNamespaceObject}(${moduleIdExpr}, 3); }`;
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} else {
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getModuleFunction = `${RuntimeGlobals.createFakeNamespaceObject}.bind(__webpack_require__, ${comment}${idExpr}, 3)`;
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}
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} else if (strict) {
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runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
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if (header) {
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getModuleFunction = `function() { ${header}return ${RuntimeGlobals.createFakeNamespaceObject}(${moduleIdExpr}, 1); }`;
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} else {
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getModuleFunction = `${RuntimeGlobals.createFakeNamespaceObject}.bind(__webpack_require__, ${comment}${idExpr}, 1)`;
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}
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} else {
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runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
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if (header) {
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getModuleFunction = `function() { ${header}return ${RuntimeGlobals.createFakeNamespaceObject}(${moduleIdExpr}, 7); }`;
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} else {
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getModuleFunction = `${RuntimeGlobals.createFakeNamespaceObject}.bind(__webpack_require__, ${comment}${idExpr}, 7)`;
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}
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}
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return `${promise || "Promise.resolve()"}.then(${getModuleFunction})`;
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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 {boolean=} options.update whether a new variable should be created or the existing one updated
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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 {string} options.importVar name of the import variable
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* @param {Module} options.originModule module in which the statement is emitted
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* @param {boolean=} options.weak true, if this is a weak dependency
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* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
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* @returns {string} the import statement
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*/
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importStatement({
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update,
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module,
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chunkGraph,
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request,
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importVar,
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originModule,
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weak,
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runtimeRequirements
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}) {
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if (!module) {
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return this.missingModuleStatement({
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request
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});
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}
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if (chunkGraph.getModuleId(module) === 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: "statements"
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});
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}
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throw new Error(
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`RuntimeTemplate.importStatment(): Module ${module.identifier()} has no id. This should not happen.`
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);
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}
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const moduleId = 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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const optDeclaration = update ? "" : "var ";
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const exportsType = module.buildMeta && module.buildMeta.exportsType;
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runtimeRequirements.add(RuntimeGlobals.require);
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let content = `/* harmony import */ ${optDeclaration}${importVar} = __webpack_require__(${moduleId});\n`;
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if (!exportsType && !originModule.buildMeta.strictHarmonyModule) {
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runtimeRequirements.add(RuntimeGlobals.compatGetDefaultExport);
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content += `/* harmony import */ ${optDeclaration}${importVar}_default = /*#__PURE__*/${RuntimeGlobals.compatGetDefaultExport}(${importVar});\n`;
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}
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if (exportsType === "named") {
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runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
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if (Array.isArray(chunkGraph.moduleGraph.getProvidedExports(module))) {
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content += `${optDeclaration}${importVar}_namespace = /*#__PURE__*/${RuntimeGlobals.createFakeNamespaceObject}(${moduleId}, 1);\n`;
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} else {
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content += `${optDeclaration}${importVar}_namespace = /*#__PURE__*/${RuntimeGlobals.createFakeNamespaceObject}(${moduleId});\n`;
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}
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}
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return content;
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}
|
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|
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/**
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* @param {Object} options options
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|
* @param {ModuleGraph} options.moduleGraph the module graph
|
|
* @param {Module} options.module the module
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* @param {string} options.request the request
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* @param {string | string[]} options.exportName the export name
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* @param {Module} options.originModule the origin module
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* @param {boolean} options.asiSafe true, if location is safe for ASI, a bracket can be emitted
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* @param {boolean} options.isCall true, if expression will be called
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* @param {boolean} options.callContext when false, call context will not be preserved
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* @param {string} options.importVar the identifier name of the import variable
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* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
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* @returns {string} expression
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*/
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exportFromImport({
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moduleGraph,
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module,
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request,
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exportName,
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originModule,
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asiSafe,
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isCall,
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callContext,
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importVar,
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runtimeRequirements
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}) {
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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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}
|
|
if (!Array.isArray(exportName)) {
|
|
exportName = exportName ? [exportName] : [];
|
|
}
|
|
const exportsType = module.buildMeta && module.buildMeta.exportsType;
|
|
|
|
if (!exportsType) {
|
|
if (exportName.length > 0 && exportName[0] === "default") {
|
|
if (!originModule.buildMeta.strictHarmonyModule) {
|
|
if (isCall) {
|
|
return `${importVar}_default()${propertyAccess(exportName, 1)}`;
|
|
} else if (asiSafe) {
|
|
return `(${importVar}_default()${propertyAccess(exportName, 1)})`;
|
|
} else {
|
|
return `${importVar}_default.a${propertyAccess(exportName, 1)}`;
|
|
}
|
|
} else {
|
|
return `${importVar}${propertyAccess(exportName, 1)}`;
|
|
}
|
|
} else if (originModule.buildMeta.strictHarmonyModule) {
|
|
if (exportName.length > 0) {
|
|
return (
|
|
"/* non-default import from non-esm module */undefined" +
|
|
propertyAccess(exportName, 1)
|
|
);
|
|
} else {
|
|
runtimeRequirements.add(RuntimeGlobals.createFakeNamespaceObject);
|
|
return `/*#__PURE__*/${RuntimeGlobals.createFakeNamespaceObject}(${importVar})`;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (exportsType === "named") {
|
|
if (exportName.length > 0 && exportName[0] === "default") {
|
|
return `${importVar}${propertyAccess(exportName, 1)}`;
|
|
} else if (exportName.length === 0) {
|
|
return `${importVar}_namespace`;
|
|
}
|
|
}
|
|
|
|
if (exportName.length > 0) {
|
|
const exportsInfo = moduleGraph.getExportsInfo(module);
|
|
const used = exportsInfo.getUsedName(exportName);
|
|
if (!used) {
|
|
const comment = Template.toNormalComment(
|
|
`unused export ${exportName.join(".")}`
|
|
);
|
|
return `${comment} undefined`;
|
|
}
|
|
const comment = arrayEquals(used, exportName)
|
|
? ""
|
|
: Template.toNormalComment(exportName.join(".")) + " ";
|
|
const access = `${importVar}${comment}${propertyAccess(used)}`;
|
|
if (isCall && callContext === false) {
|
|
if (asiSafe) {
|
|
return `(0,${access})`;
|
|
} else {
|
|
return `Object(${access})`;
|
|
}
|
|
}
|
|
return access;
|
|
} else {
|
|
return importVar;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options
|
|
* @param {AsyncDependenciesBlock} options.block the async block
|
|
* @param {string} options.message the message
|
|
* @param {ChunkGraph} options.chunkGraph the chunk graph
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @returns {string} expression
|
|
*/
|
|
blockPromise({ block, message, chunkGraph, runtimeRequirements }) {
|
|
if (!block) {
|
|
const comment = this.comment({
|
|
message
|
|
});
|
|
return `Promise.resolve(${comment.trim()})`;
|
|
}
|
|
const chunkGroup = chunkGraph.getBlockChunkGroup(block);
|
|
if (!chunkGroup || chunkGroup.chunks.length === 0) {
|
|
const comment = this.comment({
|
|
message
|
|
});
|
|
return `Promise.resolve(${comment.trim()})`;
|
|
}
|
|
const chunks = chunkGroup.chunks.filter(
|
|
chunk => !chunk.hasRuntime() && chunk.id !== null
|
|
);
|
|
const comment = this.comment({
|
|
message,
|
|
chunkName: block.chunkName
|
|
});
|
|
if (chunks.length === 1) {
|
|
const chunkId = JSON.stringify(chunks[0].id);
|
|
runtimeRequirements.add(RuntimeGlobals.ensureChunk);
|
|
return `${RuntimeGlobals.ensureChunk}(${comment}${chunkId})`;
|
|
} else if (chunks.length > 0) {
|
|
runtimeRequirements.add(RuntimeGlobals.ensureChunk);
|
|
const requireChunkId = chunk =>
|
|
`${RuntimeGlobals.ensureChunk}(${JSON.stringify(chunk.id)})`;
|
|
return `Promise.all(${comment.trim()}[${chunks
|
|
.map(requireChunkId)
|
|
.join(", ")}])`;
|
|
} else {
|
|
return `Promise.resolve(${comment.trim()})`;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Object} options options
|
|
* @param {string} options.exportsArgument the name of the exports object
|
|
* @param {Set<string>} options.runtimeRequirements if set, will be filled with runtime requirements
|
|
* @returns {string} statement
|
|
*/
|
|
defineEsModuleFlagStatement({ exportsArgument, runtimeRequirements }) {
|
|
runtimeRequirements.add(RuntimeGlobals.makeNamespaceObject);
|
|
runtimeRequirements.add(RuntimeGlobals.exports);
|
|
return `${RuntimeGlobals.makeNamespaceObject}(${exportsArgument});\n`;
|
|
}
|
|
}
|
|
|
|
module.exports = RuntimeTemplate;
|