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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Florent Cailhol @ooflorent
*/
"use strict";
const { compareChunksNatural } = require("../util/comparators");
const {
getFullChunkName,
getUsedChunkIds,
assignDeterministicIds
} = require("./IdHelpers");
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../Module")} Module */
/**
* @typedef {object} DeterministicChunkIdsPluginOptions
* @property {string=} context context for ids
* @property {number=} maxLength maximum length of ids
*/
class DeterministicChunkIdsPlugin {
/**
* @param {DeterministicChunkIdsPluginOptions} [options] options
*/
constructor(options = {}) {
this.options = options;
}
/**
* Apply the plugin
* @param {Compiler} compiler the compiler instance
* @returns {void}
*/
apply(compiler) {
compiler.hooks.compilation.tap(
"DeterministicChunkIdsPlugin",
compilation => {
compilation.hooks.chunkIds.tap(
"DeterministicChunkIdsPlugin",
chunks => {
const chunkGraph = compilation.chunkGraph;
const context = this.options.context
? this.options.context
: compiler.context;
const maxLength = this.options.maxLength || 3;
const compareNatural = compareChunksNatural(chunkGraph);
const usedIds = getUsedChunkIds(compilation);
assignDeterministicIds(
Array.from(chunks).filter(chunk => chunk.id === null),
chunk =>
getFullChunkName(chunk, chunkGraph, context, compiler.root),
compareNatural,
(chunk, id) => {
const size = usedIds.size;
usedIds.add(`${id}`);
if (size === usedIds.size) return false;
chunk.id = id;
chunk.ids = [id];
return true;
},
[10 ** maxLength],
10,
usedIds.size
);
}
);
}
);
}
}
module.exports = DeterministicChunkIdsPlugin;