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 { getEntryRuntime, mergeRuntimeOwned } = require("./util/runtime");
/** @typedef {import("./Compiler")} Compiler */
/** @typedef {import("./util/runtime").RuntimeSpec} RuntimeSpec */
class FlagAllModulesAsUsedPlugin {
constructor(explanation) {
this.explanation = explanation;
}
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.compilation.tap(
"FlagAllModulesAsUsedPlugin",
compilation => {
const moduleGraph = compilation.moduleGraph;
compilation.hooks.optimizeDependencies.tap(
"FlagAllModulesAsUsedPlugin",
modules => {
/** @type {RuntimeSpec} */
let runtime = undefined;
for (const [name, { options }] of compilation.entries) {
runtime = mergeRuntimeOwned(
runtime,
getEntryRuntime(compilation, name, options)
);
}
for (const module of modules) {
const exportsInfo = moduleGraph.getExportsInfo(module);
exportsInfo.setUsedInUnknownWay(runtime);
moduleGraph.addExtraReason(module, this.explanation);
if (module.factoryMeta === undefined) {
module.factoryMeta = {};
}
module.factoryMeta.sideEffectFree = false;
}
}
);
}
);
}
}
module.exports = FlagAllModulesAsUsedPlugin;