webpack/lib/FlagInitialModulesAsUsedPlu...

45 lines
1.0 KiB
JavaScript

/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
/** @typedef {import("./Compiler")} Compiler */
class FlagInitialModulesAsUsedPlugin {
constructor(explanation) {
this.explanation = explanation;
}
/**
* @param {Compiler} compiler webpack compiler
* @returns {void}
*/
apply(compiler) {
compiler.hooks.compilation.tap(
"FlagInitialModulesAsUsedPlugin",
compilation => {
const moduleGraph = compilation.moduleGraph;
compilation.hooks.afterOptimizeChunks.tap(
"FlagInitialModulesAsUsedPlugin",
chunks => {
const chunkGraph = compilation.chunkGraph;
for (const chunk of chunks) {
if (!chunk.isOnlyInitial()) {
return;
}
for (const module of chunkGraph.getChunkModulesIterable(chunk)) {
moduleGraph.setUsedExports(module, true);
moduleGraph.addExtraReason(module, this.explanation);
}
}
}
);
}
);
}
}
module.exports = FlagInitialModulesAsUsedPlugin;