RecordIdsPlugin.js
4.56 KB
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
var path = require("path");
function RecordIdsPlugin() {}
module.exports = RecordIdsPlugin;
function makeRelative(compiler, identifier) {
var context = compiler.context;
return identifier.split("|").map(function(str) {
return str.split("!").map(function(str) {
return path.relative(context, str);
}).join("!");
}).join("|");
}
RecordIdsPlugin.prototype.apply = function(compiler) {
compiler.plugin("compilation", function(compilation) {
compilation.plugin("record-modules", function(modules, records) {
if(!records.modules) records.modules = {};
if(!records.modules.byIdentifier) records.modules.byIdentifier = {};
if(!records.modules.usedIds) records.modules.usedIds = {};
modules.forEach(function(module) {
if(!module.portableId) module.portableId = makeRelative(compiler, module.identifier());
var identifier = module.portableId;
records.modules.byIdentifier[identifier] = module.id;
records.modules.usedIds[module.id] = module.id;
});
});
compilation.plugin("revive-modules", function(modules, records) {
if(!records.modules) return;
if(records.modules.byIdentifier) {
var usedIds = {};
modules.forEach(function(module) {
if(module.id !== null) return;
if(!module.portableId) module.portableId = makeRelative(compiler, module.identifier());
var identifier = module.portableId;
var id = records.modules.byIdentifier[identifier];
if(id === undefined) return;
if(usedIds[id]) return;
usedIds[id] = true;
module.id = id;
});
}
compilation.usedModuleIds = records.modules.usedIds;
});
function getDepBlockIdent(chunk, block) {
var ident = [];
if(block.chunks.length > 1)
ident.push(block.chunks.indexOf(chunk));
while(block.parent) {
var p = block.parent;
var idx = p.blocks.indexOf(block);
var l = p.blocks.length - 1;
ident.unshift(idx + "/" + l);
block = block.parent;
}
if(!block.identifier) return null;
ident.unshift(makeRelative(compiler, block.identifier()));
return ident.join(":");
}
compilation.plugin("record-chunks", function(chunks, records) {
records.nextFreeChunkId = compilation.nextFreeChunkId;
if(!records.chunks) records.chunks = {};
if(!records.chunks.byName) records.chunks.byName = {};
if(!records.chunks.byBlocks) records.chunks.byBlocks = {};
records.chunks.usedIds = {};
chunks.forEach(function(chunk) {
var name = chunk.name;
var blockIdents = chunk.blocks.map(getDepBlockIdent.bind(null, chunk)).filter(Boolean);
if(name) records.chunks.byName[name] = chunk.id;
blockIdents.forEach(function(blockIdent) {
records.chunks.byBlocks[blockIdent] = chunk.id;
});
records.chunks.usedIds[chunk.id] = chunk.id;
});
});
compilation.plugin("revive-chunks", function(chunks, records) {
if(!records.chunks) return;
var usedIds = {};
if(records.chunks.byName) {
chunks.forEach(function(chunk) {
if(chunk.id !== null) return;
if(!chunk.name) return;
var id = records.chunks.byName[chunk.name];
if(id === undefined) return;
if(usedIds[id]) return;
usedIds[id] = true;
chunk.id = id;
});
}
if(records.chunks.byBlocks) {
var argumentedChunks = chunks.filter(function(chunk) {
return chunk.id === null;
}).map(function(chunk) {
return {
chunk: chunk,
blockIdents: chunk.blocks.map(getDepBlockIdent.bind(null, chunk)).filter(Boolean)
};
}).filter(function(arg) {
return arg.blockIdents.length > 0;
});
var blockIdentsCount = {};
argumentedChunks.forEach(function(arg, idx) {
arg.blockIdents.forEach(function(blockIdent) {
var id = records.chunks.byBlocks[blockIdent];
if(typeof id !== "number") return;
var accessor = id + ":" + idx;
blockIdentsCount[accessor] = (blockIdentsCount[accessor] || 0) + 1;
});
});
blockIdentsCount = Object.keys(blockIdentsCount).map(function(accessor) {
return [blockIdentsCount[accessor]].concat(accessor.split(":").map(Number));
}).sort(function(a, b) {
return b[0] - a[0];
});
blockIdentsCount.forEach(function(arg) {
var id = arg[1];
if(usedIds[id]) return;
var idx = arg[2];
var chunk = argumentedChunks[idx].chunk;
if(chunk.id !== null) return;
usedIds[id] = true;
chunk.id = id;
});
}
compilation.usedChunkIds = records.chunks.usedIds;
});
});
};