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DeterministicModuleIdsPlugin.js
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Sun, Jul 13, 15:37

DeterministicModuleIdsPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Florent Cailhol @ooflorent
*/
"use strict";
const {
compareModulesByPreOrderIndexOrIdentifier
} = require("../util/comparators");
const {
getUsedModuleIds,
getFullModuleName,
assignDeterministicIds
} = require("./IdHelpers");
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../Module")} Module */
class DeterministicModuleIdsPlugin {
constructor(options) {
this.options = options || {};
}
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.compilation.tap(
"DeterministicModuleIdsPlugin",
compilation => {
compilation.hooks.moduleIds.tap(
"DeterministicModuleIdsPlugin",
modules => {
const chunkGraph = compilation.chunkGraph;
const context = this.options.context
? this.options.context
: compiler.context;
const maxLength = this.options.maxLength || 3;
const usedIds = getUsedModuleIds(compilation);
assignDeterministicIds(
Array.from(modules).filter(module => {
if (!module.needId) return false;
if (chunkGraph.getNumberOfModuleChunks(module) === 0)
return false;
return chunkGraph.getModuleId(module) === null;
}),
module => getFullModuleName(module, context, compiler.root),
compareModulesByPreOrderIndexOrIdentifier(
compilation.moduleGraph
),
(module, id) => {
const size = usedIds.size;
usedIds.add(`${id}`);
if (size === usedIds.size) return false;
chunkGraph.setModuleId(module, id);
return true;
},
[Math.pow(10, maxLength)],
10,
usedIds.size
);
}
);
}
);
}
}
module.exports = DeterministicModuleIdsPlugin;

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