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 HarmonyImportDependency = require("../dependencies/HarmonyImportDependency");
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../Module")} Module */
class InferAsyncModulesPlugin {
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.compilation.tap("InferAsyncModulesPlugin", compilation => {
const { moduleGraph } = compilation;
compilation.hooks.finishModules.tap(
"InferAsyncModulesPlugin",
modules => {
/** @type {Set<Module>} */
const queue = new Set();
for (const module of modules) {
if (module.buildMeta && module.buildMeta.async) {
queue.add(module);
}
}
for (const module of queue) {
moduleGraph.setAsync(module);
for (const [
originModule,
connections
] of moduleGraph.getIncomingConnectionsByOriginModule(module)) {
if (
connections.some(
c =>
c.dependency instanceof HarmonyImportDependency &&
c.isTargetActive(undefined)
)
) {
queue.add(originModule);
}
}
}
}
);
});
}
}
module.exports = InferAsyncModulesPlugin;