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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
function getChunkIdentifier(chunk) {
return chunk.modules.map((m) => {
return m.identifier();
}).sort().join(", ");
}
class MergeDuplicateChunksPlugin {
apply(compiler) {
compiler.plugin("compilation", (compilation) => {
compilation.plugin("optimize-chunks-basic", (chunks) => {
const map = {};
chunks.slice().forEach((chunk) => {
if(chunk.hasRuntime() || chunk.hasEntryModule()) return;
const ident = getChunkIdentifier(chunk);
if(map[ident]) {
if(map[ident].integrate(chunk, "duplicate"))
chunks.splice(chunks.indexOf(chunk), 1);
return;
}
map[ident] = chunk;
});
});
});
}
}
module.exports = MergeDuplicateChunksPlugin;
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