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MIT License http://www.opensource.org/licenses/mit-license.php

Author Tobias Koppers @sokra

"use strict";

const util = require("util");

const DependenciesBlock = require("./DependenciesBlock");

const ModuleReason = require("./ModuleReason");

const SortableSet = require("./util/SortableSet");

const Template = require("./Template");

let debugId = 1000;

const sortById = (a, b) => {

return a.id - b.id;

};

const sortByDebugId = (a, b) => {

return a.debugId - b.debugId;

};

class Module extends DependenciesBlock {

constructor() {

super();

this.context = null;

this.reasons = [];

this.debugId = debugId++;

this.id = null;

this.portableId = null;

this.index = null;

this.index2 = null;

this.depth = null;

this.used = null;

this.usedExports = null;

this.providedExports = null;

this._chunks = new SortableSet(undefined, sortById);

this._chunksDebugIdent = undefined;

this.warnings = [];

this.dependenciesWarnings = [];

this.errors = [];

this.dependenciesErrors = [];

this.strict = false;

this.meta = {};

this.optimizationBailout = [];

}

disconnect() {

this.reasons.length = 0;

this.id = null;

this.index = null;

this.index2 = null;

this.depth = null;

this.used = null;

this.usedExports = null;

this.providedExports = null;

this._chunks.clear();

this._chunksDebugIdent = undefined;

this.optimizationBailout.length = 0;

super.disconnect();

}

unseal() {

this.id = null;

this.index = null;

this.index2 = null;

this.depth = null;

this._chunks.clear();

this._chunksDebugIdent = undefined;

super.unseal();

}

setChunks(chunks) {

this._chunks = new SortableSet(chunks, sortById);

this._chunksDebugIdent = undefined;

}

addChunk(chunk) {

this._chunks.add(chunk);

this._chunksDebugIdent = undefined;

}

removeChunk(chunk) {

if(this._chunks.delete(chunk)) {

this._chunksDebugIdent = undefined;

chunk.removeModule(this);

return true;

}

return false;

}

isInChunk(chunk) {

return this._chunks.has(chunk);

}

getChunkIdsIdent() {

if(this._chunksDebugIdent !== undefined) return this._chunksDebugIdent;

this._chunks.sortWith(sortByDebugId);

const chunks = this._chunks;

const list = [];

for(const chunk of chunks) {

const debugId = chunk.debugId;

if(typeof debugId !== "number") {

return this._chunksDebugIdent = null;

}

list.push(debugId);

}

return this._chunksDebugIdent = list.join(",");

}

forEachChunk(fn) {

this._chunks.forEach(fn);

}

mapChunks(fn) {

return Array.from(this._chunks, fn);

}

getChunks() {

return Array.from(this._chunks);

}

getNumberOfChunks() {

return this._chunks.size;

}

hasEqualsChunks(otherModule) {

if(this._chunks.size !== otherModule._chunks.size) return false;

this._chunks.sortWith(sortByDebugId);

otherModule._chunks.sortWith(sortByDebugId);

const a = this._chunks[Symbol.iterator]();

const b = otherModule._chunks[Symbol.iterator]();

while(true) { // eslint-disable-line

const aItem = a.next();

const bItem = b.next();

if(aItem.done) return true;

if(aItem.value !== bItem.value) return false;

}

addReason(module, dependency) {

this.reasons.push(new ModuleReason(module, dependency));

}

removeReason(module, dependency) {

for(let i = 0; i < this.reasons.length; i++) {

let r = this.reasons[i];

if(r.module === module && r.dependency === dependency) {

this.reasons.splice(i, 1);

return true;

}

return false;

}

hasReasonForChunk(chunk) {

for(let i = 0; i < this.reasons.length; i++) {

if(this.reasons[i].hasChunk(chunk))

return true;

}

return false;

}

rewriteChunkInReasons(oldChunk, newChunks) {

for(let i = 0; i < this.reasons.length; i++) {

this.reasons[i].rewriteChunks(oldChunk, newChunks);

}

isUsed(exportName) {

if(this.used === null) return exportName;

if(!exportName) return !!this.used;

if(!this.used) return false;

if(!this.usedExports) return false;

if(this.usedExports === true) return exportName;

let idx = this.usedExports.indexOf(exportName);

if(idx < 0) return false;

if(this.isProvided(exportName))

return Template.numberToIdentifer(idx);

return exportName;

}

isProvided(exportName) {

if(!Array.isArray(this.providedExports))

return null;

return this.providedExports.indexOf(exportName) >= 0;

}

toString() {

return `Module[${this.id || this.debugId}]`;

}

needRebuild(fileTimestamps, contextTimestamps) {

return true;

}

updateHash(hash) {

hash.update(this.id + "" + this.used);

hash.update(JSON.stringify(this.usedExports));

super.updateHash(hash);

}

sortItems(sortChunks) {

super.sortItems();

if(sortChunks)

this._chunks.sort();

this.reasons.sort((a, b) => sortById(a.module, b.module));

if(Array.isArray(this.usedExports)) {

this.usedExports.sort();

}

unbuild() {

this.disconnect();

}

Object.defineProperty(Module.prototype, "entry", {

configurable: false,

get() {

throw new Error("Module.entry was removed. Use Chunk.entryModule");

set() {

throw new Error("Module.entry was removed. Use Chunk.entryModule");

}

});

Object.defineProperty(Module.prototype, "chunks", {

configurable: false,

get: util.deprecate(function() {

return Array.from(this._chunks);

}, "Module.chunks: Use Module.forEachChunk/mapChunks/getNumberOfChunks/isInChunk/addChunk/removeChunk instead"),

set() {

throw new Error("Readonly. Use Module.addChunk/removeChunk to modify chunks.");

}

});

Module.prototype.identifier = null;

Module.prototype.readableIdentifier = null;

Module.prototype.build = null;

Module.prototype.source = null;

Module.prototype.size = null;

Module.prototype.nameForCondition = null;

module.exports = Module;

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