diff options
| author | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
|---|---|---|
| committer | Florian Dold <florian.dold@gmail.com> | 2017-05-03 15:35:00 +0200 |
| commit | de98e0b232509d5f40c135d540a70e415272ff85 (patch) | |
| tree | a79222a5b58484ab3b80d18efcaaa7ccc4769b33 /node_modules/webpack/lib/optimize/RemoveParentModulesPlugin.js | |
| parent | e0c9d480a73fa629c1e4a47d3e721f1d2d345406 (diff) | |
node_modules
Diffstat (limited to 'node_modules/webpack/lib/optimize/RemoveParentModulesPlugin.js')
| -rw-r--r-- | node_modules/webpack/lib/optimize/RemoveParentModulesPlugin.js | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/optimize/RemoveParentModulesPlugin.js b/node_modules/webpack/lib/optimize/RemoveParentModulesPlugin.js new file mode 100644 index 000000000..e73add989 --- /dev/null +++ b/node_modules/webpack/lib/optimize/RemoveParentModulesPlugin.js @@ -0,0 +1,91 @@ +/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Tobias Koppers @sokra
+*/
+"use strict";
+
+function chunkContainsModule(chunk, module) {
+ const chunks = module.chunks;
+ const modules = chunk.modules;
+ if(chunks.length < modules.length) {
+ return chunks.indexOf(chunk) >= 0;
+ } else {
+ return modules.indexOf(module) >= 0;
+ }
+}
+
+function hasModule(chunk, module, checkedChunks) {
+ if(chunkContainsModule(chunk, module)) return [chunk];
+ if(chunk.parents.length === 0) return false;
+ return allHaveModule(chunk.parents.filter((c) => {
+ return checkedChunks.indexOf(c) < 0;
+ }), module, checkedChunks);
+}
+
+function allHaveModule(someChunks, module, checkedChunks) {
+ if(!checkedChunks) checkedChunks = [];
+ var chunks = [];
+ for(var i = 0; i < someChunks.length; i++) {
+ checkedChunks.push(someChunks[i]);
+ var subChunks = hasModule(someChunks[i], module, checkedChunks);
+ if(!subChunks) return false;
+
+ for(var index = 0; index < subChunks.length; index++) {
+ var item = subChunks[index];
+
+ if(!chunks.length || chunks.indexOf(item) < 0) {
+ chunks.push(item);
+ }
+ }
+ }
+ return chunks;
+}
+
+function debugIds(chunks) {
+ var list = [];
+ for(var i = 0; i < chunks.length; i++) {
+ var debugId = chunks[i].debugId;
+
+ if(typeof debugId !== "number") {
+ return "no";
+ }
+
+ list.push(debugId);
+ }
+
+ list.sort();
+ return list.join(",");
+}
+
+class RemoveParentModulesPlugin {
+ apply(compiler) {
+ compiler.plugin("compilation", (compilation) => {
+ compilation.plugin(["optimize-chunks-basic", "optimize-extracted-chunks-basic"], (chunks) => {
+ for(var index = 0; index < chunks.length; index++) {
+ var chunk = chunks[index];
+ if(chunk.parents.length === 0) continue;
+
+ // TODO consider Map when performance has improved https://gist.github.com/sokra/b36098368da7b8f6792fd7c85fca6311
+ var cache = Object.create(null);
+ var modules = chunk.modules.slice();
+ for(var i = 0; i < modules.length; i++) {
+ var module = modules[i];
+
+ var dId = debugIds(module.chunks);
+ var parentChunksWithModule;
+ if((dId in cache) && dId !== "no") {
+ parentChunksWithModule = cache[dId];
+ } else {
+ parentChunksWithModule = cache[dId] = allHaveModule(chunk.parents, module);
+ }
+ if(parentChunksWithModule) {
+ module.rewriteChunkInReasons(chunk, parentChunksWithModule);
+ chunk.removeModule(module);
+ }
+ }
+ }
+ });
+ });
+ }
+}
+module.exports = RemoveParentModulesPlugin;
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