mirror of https://github.com/webpack/webpack.git
52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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function CommonsChunkPlugin(name, minCount) {
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this.name = name;
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this.minCount = minCount || 2;
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}
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module.exports = CommonsChunkPlugin;
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CommonsChunkPlugin.prototype.apply = function(compiler) {
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var name = this.name;
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var minCount = this.minCount;
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compiler.plugin("compilation", function(compilation) {
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compilation.plugin("optimize-chunks", function(chunks) {
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var commonModulesCount = [];
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var commonModules = [];
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chunks.forEach(function(chunk) {
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if(chunk.entry) {
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chunk.modules.forEach(function(module) {
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var idx = commonModules.indexOf(module);
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if(idx < 0) {
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commonModules.push(module);
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commonModulesCount.push(1);
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} else {
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commonModulesCount[idx]++;
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}
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});
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}
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});
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var commonChunk = this.addChunk(name);
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commonModulesCount.forEach(function(count, idx) {
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if(count >= minCount) {
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var module = commonModules[idx];
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module.chunks.slice().forEach(function(chunk) {
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module.removeChunk(chunk);
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});
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commonChunk.addModule(module);
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module.addChunk(commonChunk);
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}
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});
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chunks.forEach(function(chunk) {
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if(chunk.entry) {
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chunk.parents = [commonChunk];
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commonChunk.chunks.push(chunk);
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chunk.entry = false;
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}
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});
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commonChunk.entry = true;
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commonChunk.id = 0;
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});
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});
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};
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