vue hello world项目
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const { OriginalSource, RawSource } = require("webpack-sources");
const Module = require("./Module");
const RuntimeGlobals = require("./RuntimeGlobals");
const DelegatedSourceDependency = require("./dependencies/DelegatedSourceDependency");
const StaticExportsDependency = require("./dependencies/StaticExportsDependency");
const makeSerializable = require("./util/makeSerializable");
/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("../declarations/WebpackOptions").WebpackOptionsNormalized} WebpackOptions */
/** @typedef {import("./ChunkGraph")} ChunkGraph */
/** @typedef {import("./Compilation")} Compilation */
/** @typedef {import("./Dependency").UpdateHashContext} UpdateHashContext */
/** @typedef {import("./DependencyTemplates")} DependencyTemplates */
/** @typedef {import("./LibManifestPlugin").ManifestModuleData} ManifestModuleData */
/** @typedef {import("./Module").CodeGenerationContext} CodeGenerationContext */
/** @typedef {import("./Module").CodeGenerationResult} CodeGenerationResult */
/** @typedef {import("./Module").LibIdentOptions} LibIdentOptions */
/** @typedef {import("./Module").NeedBuildContext} NeedBuildContext */
/** @typedef {import("./Module").SourceContext} SourceContext */
/** @typedef {import("./RequestShortener")} RequestShortener */
/** @typedef {import("./ResolverFactory").ResolverWithOptions} ResolverWithOptions */
/** @typedef {import("./RuntimeTemplate")} RuntimeTemplate */
/** @typedef {import("./WebpackError")} WebpackError */
/** @typedef {import("./dependencies/ModuleDependency")} ModuleDependency */
/** @typedef {import("./util/Hash")} Hash */
/** @typedef {import("./util/fs").InputFileSystem} InputFileSystem */
const TYPES = new Set(["javascript"]);
const RUNTIME_REQUIREMENTS = new Set([
RuntimeGlobals.module,
RuntimeGlobals.require
]);
class DelegatedModule extends Module {
constructor(sourceRequest, data, type, userRequest, originalRequest) {
super("javascript/dynamic", null);
// Info from Factory
this.sourceRequest = sourceRequest;
this.request = data.id;
this.delegationType = type;
this.userRequest = userRequest;
this.originalRequest = originalRequest;
/** @type {ManifestModuleData} */
this.delegateData = data;
// Build info
this.delegatedSourceDependency = undefined;
}
/**
* @returns {Set<string>} types available (do not mutate)
*/
getSourceTypes() {
return TYPES;
}
/**
* @param {LibIdentOptions} options options
* @returns {string | null} an identifier for library inclusion
*/
libIdent(options) {
return typeof this.originalRequest === "string"
? this.originalRequest
: this.originalRequest.libIdent(options);
}
/**
* @returns {string} a unique identifier of the module
*/
identifier() {
return `delegated ${JSON.stringify(this.request)} from ${
this.sourceRequest
}`;
}
/**
* @param {RequestShortener} requestShortener the request shortener
* @returns {string} a user readable identifier of the module
*/
readableIdentifier(requestShortener) {
return `delegated ${this.userRequest} from ${this.sourceRequest}`;
}
/**
* @param {NeedBuildContext} context context info
* @param {function((WebpackError | null)=, boolean=): void} callback callback function, returns true, if the module needs a rebuild
* @returns {void}
*/
needBuild(context, callback) {
return callback(null, !this.buildMeta);
}
/**
* @param {WebpackOptions} options webpack options
* @param {Compilation} compilation the compilation
* @param {ResolverWithOptions} resolver the resolver
* @param {InputFileSystem} fs the file system
* @param {function(WebpackError=): void} callback callback function
* @returns {void}
*/
build(options, compilation, resolver, fs, callback) {
this.buildMeta = { ...this.delegateData.buildMeta };
this.buildInfo = {};
this.dependencies.length = 0;
this.delegatedSourceDependency = new DelegatedSourceDependency(
this.sourceRequest
);
this.addDependency(this.delegatedSourceDependency);
this.addDependency(
new StaticExportsDependency(this.delegateData.exports || true, false)
);
callback();
}
/**
* @param {CodeGenerationContext} context context for code generation
* @returns {CodeGenerationResult} result
*/
codeGeneration({ runtimeTemplate, moduleGraph, chunkGraph }) {
const dep = /** @type {DelegatedSourceDependency} */ (this.dependencies[0]);
const sourceModule = moduleGraph.getModule(dep);
let str;
if (!sourceModule) {
str = runtimeTemplate.throwMissingModuleErrorBlock({
request: this.sourceRequest
});
} else {
str = `module.exports = (${runtimeTemplate.moduleExports({
module: sourceModule,
chunkGraph,
request: dep.request,
runtimeRequirements: new Set()
})})`;
switch (this.delegationType) {
case "require":
str += `(${JSON.stringify(this.request)})`;
break;
case "object":
str += `[${JSON.stringify(this.request)}]`;
break;
}
str += ";";
}
const sources = new Map();
if (this.useSourceMap || this.useSimpleSourceMap) {
sources.set("javascript", new OriginalSource(str, this.identifier()));
} else {
sources.set("javascript", new RawSource(str));
}
return {
sources,
runtimeRequirements: RUNTIME_REQUIREMENTS
};
}
/**
* @param {string=} type the source type for which the size should be estimated
* @returns {number} the estimated size of the module (must be non-zero)
*/
size(type) {
return 42;
}
/**
* @param {Hash} hash the hash used to track dependencies
* @param {UpdateHashContext} context context
* @returns {void}
*/
updateHash(hash, context) {
hash.update(this.delegationType);
hash.update(JSON.stringify(this.request));
super.updateHash(hash, context);
}
serialize(context) {
const { write } = context;
// constructor
write(this.sourceRequest);
write(this.delegateData);
write(this.delegationType);
write(this.userRequest);
write(this.originalRequest);
super.serialize(context);
}
static deserialize(context) {
const { read } = context;
const obj = new DelegatedModule(
read(), // sourceRequest
read(), // delegateData
read(), // delegationType
read(), // userRequest
read() // originalRequest
);
obj.deserialize(context);
return obj;
}
/**
* Assuming this module is in the cache. Update the (cached) module with
* the fresh module from the factory. Usually updates internal references
* and properties.
* @param {Module} module fresh module
* @returns {void}
*/
updateCacheModule(module) {
super.updateCacheModule(module);
const m = /** @type {DelegatedModule} */ (module);
this.delegationType = m.delegationType;
this.userRequest = m.userRequest;
this.originalRequest = m.originalRequest;
this.delegateData = m.delegateData;
}
/**
* Assuming this module is in the cache. Remove internal references to allow freeing some memory.
*/
cleanupForCache() {
super.cleanupForCache();
this.delegateData = undefined;
}
}
makeSerializable(DelegatedModule, "webpack/lib/DelegatedModule");
module.exports = DelegatedModule;