generated from dellevin/template
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DelLevin-Home
232
node_modules/webpack/lib/runtime/MakeDeferredNamespaceObjectRuntime.js
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vendored
Normal file
232
node_modules/webpack/lib/runtime/MakeDeferredNamespaceObjectRuntime.js
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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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 HelperRuntimeModule = require("./HelperRuntimeModule");
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/** @typedef {import("../Module").RuntimeRequirements} RuntimeRequirements */
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/** @typedef {import("../Module").ExportsType} ExportsType */
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/** @typedef {import("../ChunkGraph").ModuleId} ModuleId */
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/**
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* @param {ExportsType} exportsType exports type
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* @returns {string} mode
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*/
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function getMakeDeferredNamespaceModeFromExportsType(exportsType) {
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// number is from createFakeNamespaceObject mode ^ 1
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if (exportsType === "namespace") return `/* ${exportsType} */ 8`;
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if (exportsType === "default-only") return `/* ${exportsType} */ 0`;
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if (exportsType === "default-with-named") return `/* ${exportsType} */ 2`;
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if (exportsType === "dynamic") return `/* ${exportsType} */ 6`;
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throw new Error(`Unknown exports type: ${exportsType}`);
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}
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/**
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* @param {string} moduleId moduleId
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* @param {ExportsType} exportsType exportsType
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* @param {(ModuleId | null)[]} asyncDepsIds asyncDepsIds
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* @param {RuntimeRequirements} runtimeRequirements runtime requirements
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* @returns {string} call make optimized deferred namespace object
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*/
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function getOptimizedDeferredModule(
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moduleId,
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exportsType,
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asyncDepsIds,
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runtimeRequirements
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) {
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runtimeRequirements.add(RuntimeGlobals.makeOptimizedDeferredNamespaceObject);
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const mode = getMakeDeferredNamespaceModeFromExportsType(exportsType);
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return `${RuntimeGlobals.makeOptimizedDeferredNamespaceObject}(${moduleId}, ${mode}${
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asyncDepsIds.length > 0
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? `, ${JSON.stringify(asyncDepsIds.filter((x) => x !== null))}`
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: ""
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})`;
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}
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class MakeOptimizedDeferredNamespaceObjectRuntimeModule extends HelperRuntimeModule {
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/**
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* @param {boolean} hasAsyncRuntime if async module is used.
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*/
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constructor(hasAsyncRuntime) {
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super("make optimized deferred namespace object");
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/** @type {boolean} */
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this.hasAsyncRuntime = hasAsyncRuntime;
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}
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/**
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* @returns {string | null} runtime code
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*/
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generate() {
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if (!this.compilation) return null;
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const fn = RuntimeGlobals.makeOptimizedDeferredNamespaceObject;
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const hasAsync = this.hasAsyncRuntime;
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return Template.asString([
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// Note: must be a function (not arrow), because this is used in body!
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`${fn} = function(moduleId, mode${hasAsync ? ", asyncDeps" : ""}) {`,
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Template.indent([
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"var r = this;",
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hasAsync ? "var isAsync = asyncDeps && asyncDeps.length;" : "",
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"var obj = {",
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Template.indent([
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"get a() {",
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Template.indent([
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"var exports = r(moduleId);",
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hasAsync
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? `if(isAsync) exports = exports[${RuntimeGlobals.asyncModuleExportSymbol}];`
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: "",
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// if exportsType is "namespace" we can generate the most optimized code,
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// on the second access, we can avoid trigger the getter.
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// we can also do this if exportsType is "dynamic" and there is a "__esModule" property on it.
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'if(mode & 8 || (mode & 4 && exports.__esModule)) Object.defineProperty(this, "a", { value: exports });',
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"return exports;"
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]),
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"}"
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]),
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"};",
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hasAsync
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? `if(isAsync) obj[${RuntimeGlobals.deferredModuleAsyncTransitiveDependenciesSymbol}] = asyncDeps;`
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: "",
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"return obj;"
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]),
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"};"
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]);
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}
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}
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class MakeDeferredNamespaceObjectRuntimeModule extends HelperRuntimeModule {
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/**
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* @param {boolean} hasAsyncRuntime if async module is used.
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*/
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constructor(hasAsyncRuntime) {
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super("make deferred namespace object");
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/** @type {boolean} */
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this.hasAsyncRuntime = hasAsyncRuntime;
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}
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/**
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* @returns {string | null} runtime code
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*/
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generate() {
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if (!this.compilation) return null;
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const { runtimeTemplate } = this.compilation;
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const fn = RuntimeGlobals.makeDeferredNamespaceObject;
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const hasAsync = this.hasAsyncRuntime;
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const init = runtimeTemplate.supportsOptionalChaining()
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? "init?.();"
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: "if (init) init();";
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return `${fn} = ${runtimeTemplate.basicFunction("moduleId, mode", [
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"var cachedModule = __webpack_module_cache__[moduleId];",
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"if (cachedModule && cachedModule.error === undefined) {",
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Template.indent([
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"var exports = cachedModule.exports;",
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hasAsync
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? `if (${RuntimeGlobals.asyncModuleExportSymbol} in exports) exports = exports[${RuntimeGlobals.asyncModuleExportSymbol}];`
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: "",
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"if (mode & 8) return exports;",
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`return ${RuntimeGlobals.createFakeNamespaceObject}(exports, mode);`
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]),
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"}",
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"",
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`var init = ${runtimeTemplate.basicFunction("", [
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`ns = ${RuntimeGlobals.require}(moduleId);`,
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hasAsync
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? `if (${RuntimeGlobals.asyncModuleExportSymbol} in ns) ns = ns[${RuntimeGlobals.asyncModuleExportSymbol}];`
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: "",
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"init = null;",
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"if (mode & 8 || mode & 4 && ns.__esModule && typeof ns === 'object') {",
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Template.indent([
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"delete handler.defineProperty;",
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"delete handler.deleteProperty;",
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"delete handler.set;",
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"delete handler.get;",
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"delete handler.has;",
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"delete handler.ownKeys;",
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"delete handler.getOwnPropertyDescriptor;"
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]),
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"} else {",
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Template.indent([
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`ns = ${RuntimeGlobals.createFakeNamespaceObject}(ns, mode);`
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]),
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"}"
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])};`,
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"",
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"var ns = __webpack_module_deferred_exports__[moduleId] || (__webpack_module_deferred_exports__[moduleId] = { __proto__: null });",
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"var handler = {",
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Template.indent([
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"__proto__: null,",
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`get: ${runtimeTemplate.basicFunction("_, name", [
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"switch (name) {",
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Template.indent([
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'case "__esModule": return true;',
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'case Symbol.toStringTag: return "Deferred Module";',
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'case "then": return undefined;'
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]),
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"}",
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init,
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"return ns[name];"
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])},`,
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`has: ${runtimeTemplate.basicFunction("_, name", [
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"switch (name) {",
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Template.indent(
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[
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'case "__esModule":',
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"case Symbol.toStringTag:",
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hasAsync
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? `case ${RuntimeGlobals.deferredModuleAsyncTransitiveDependenciesSymbol}:`
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: "",
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Template.indent("return true;"),
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'case "then":',
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Template.indent("return false;")
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].filter(Boolean)
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),
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"}",
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init,
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"return name in ns;"
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])},`,
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`ownKeys: ${runtimeTemplate.basicFunction("", [
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init,
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`var keys = Reflect.ownKeys(ns).filter(${runtimeTemplate.expressionFunction('x !== "then" && x !== Symbol.toStringTag', "x")}).concat([Symbol.toStringTag]);`,
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"return keys;"
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])},`,
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`getOwnPropertyDescriptor: ${runtimeTemplate.basicFunction("_, name", [
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"switch (name) {",
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Template.indent([
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'case "__esModule": return { value: true, configurable: !(mode & 8) };',
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'case Symbol.toStringTag: return { value: "Deferred Module", configurable: !(mode & 8) };',
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'case "then": return undefined;'
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]),
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"}",
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init,
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"var desc = Reflect.getOwnPropertyDescriptor(ns, name);",
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'if (mode & 2 && name == "default" && !desc) {',
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Template.indent("desc = { value: ns, configurable: true };"),
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"}",
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"return desc;"
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])},`,
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`defineProperty: ${runtimeTemplate.basicFunction("_, name", [
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init,
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// Note: This behavior does not match the spec one, but since webpack does not do it either
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// for a normal Module Namespace object (in MakeNamespaceObjectRuntimeModule), let's keep it simple.
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"return false;"
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])},`,
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`deleteProperty: ${runtimeTemplate.returningFunction("false")},`,
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`set: ${runtimeTemplate.returningFunction("false")},`
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]),
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"}",
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// we don't fully emulate ES Module semantics in this Proxy to align with normal webpack esm namespace object.
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"return new Proxy(ns, handler);"
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])};`;
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}
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}
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module.exports.MakeDeferredNamespaceObjectRuntimeModule =
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MakeDeferredNamespaceObjectRuntimeModule;
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module.exports.MakeOptimizedDeferredNamespaceObjectRuntimeModule =
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MakeOptimizedDeferredNamespaceObjectRuntimeModule;
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module.exports.getMakeDeferredNamespaceModeFromExportsType =
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getMakeDeferredNamespaceModeFromExportsType;
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module.exports.getOptimizedDeferredModule = getOptimizedDeferredModule;
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