webpack/lib/Module.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jade, coffee, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/
var DependenciesBlock = require("./DependenciesBlock");
var ModuleReason = require("./ModuleReason");

var debugId = 1000;
function Module() {
	DependenciesBlock.call(this);
	this.context = null;
	this.reasons = [];
	this.debugId = debugId++;
	this.lastId = -1;
	this.id = null;
	this.chunks = [];
	this.warnings = [];
	this.dependenciesWarnings = [];
	this.errors = [];
	this.dependenciesErrors = [];
}
module.exports = Module;

Module.prototype = Object.create(DependenciesBlock.prototype);

Module.prototype.disconnect = function() {
	this.reasons.length = 0;
	this.lastId = this.id;
	this.id = null;
	this.chunks.length = 0;
	DependenciesBlock.prototype.disconnect.call(this);
};

Module.prototype.addChunk = function(chunk) {
	var idx = this.chunks.indexOf(chunk);
	if(idx < 0)
		this.chunks.push(chunk);
};

Module.prototype._removeAndDo = require("./removeAndDo");

Module.prototype.removeChunk = function(chunk) {
	return this._removeAndDo("chunks", chunk, "removeModule");
};

Module.prototype.addReason = function(module, dependency) {
	this.reasons.push(new ModuleReason(module, dependency));
};

Module.prototype.removeReason = function(module, dependency) {
	for(var i = 0; i < this.reasons.length; i++) {
		var r = this.reasons[i];
		if(r.module === module && r.dependency === dependency) {
			this.reasons.splice(i, 1);
			return true;
		}
	}
	return false;
};

Module.prototype.hasReasonForChunk = function(chunk) {
	for(var i = 0; i < this.reasons.length; i++) {
		var r = this.reasons[i];
		if(r.chunks) {
			if(r.chunks.indexOf(chunk) >= 0)
				return true;
		} else if(r.module.chunks.indexOf(chunk) >= 0)
			return true;
	}
	return false;
};

function addToSet(set, items) {
	items.forEach(function(item) {
		if(set.indexOf(item) < 0)
			set.push(item);
	});
}

Module.prototype.rewriteChunkInReasons = function(oldChunk, newChunks) {
	this.reasons.forEach(function(r) {
		if(!r.chunks) {
			if(r.module.chunks.indexOf(oldChunk) < 0)
				return;
			r.chunks = r.module.chunks;
		}
		r.chunks = r.chunks.reduce(function(arr, c) {
			addToSet(arr, c !== oldChunk ? [c] : newChunks);
			return arr;
		}, []);
	});
};

Module.prototype.toString = function() {
	return "Module[" + (this.id || this.debugId) + "]";
};

Module.prototype.needRebuild = function(fileTimestamps, contextTimestamps) {
	return true;
};

Module.prototype.updateHash = function(hash) {
	hash.update(this.id + "");
	DependenciesBlock.prototype.updateHash.call(this, hash);
};

Module.prototype.identifier = null;
Module.prototype.readableIdentifier = null;
Module.prototype.build = null;
Module.prototype.source = null;
Module.prototype.size = null;