text: /*
  	MIT License http://www.opensource.org/licenses/mit-license.php
  	Author Tobias Koppers @sokra
  */
  var Template = require("../Template");
  
  function NodeMainTemplatePlugin(asyncChunkLoading) {
  	this.asyncChunkLoading = asyncChunkLoading;
  }
  module.exports = NodeMainTemplatePlugin;
  NodeMainTemplatePlugin.prototype.apply = function(mainTemplate) {
  	var self = this;
  	mainTemplate.plugin("local-vars", function(source, chunk) {
  		if(chunk.chunks.length > 0) {
  			return this.asString([
  				source,
  				"",
  				"// object to store loaded chunks",
  				"// \"0\" means \"already loaded\"",
  				"var installedChunks = {",
  				this.indent(
  					chunk.ids.map(function(id) {
  						return id + ": 0";
  					}).join(",\n")
  				),
  				"};"
  			]);
  		}
  		return source;
  	});
  	mainTemplate.plugin("require-extensions", function(source, chunk) {
  		if(chunk.chunks.length > 0) {
  			return this.asString([
  				source,
  				"",
  				"// uncatched error handler for webpack runtime",
  				this.requireFn + ".oe = function(err) {",
  				this.indent([
  					"process.nextTick(function() {",
  					this.indent("throw err; // catch this error by using System.import().catch()"),
  					"});"
  				]),
  				"};"
  			]);
  		}
  		return source;
  	});
  	mainTemplate.plugin("require-ensure", function(_, chunk, hash) {
  		var filename = this.outputOptions.filename;
  		var chunkFilename = this.outputOptions.chunkFilename;
  		var chunkMaps = chunk.getChunkMaps();
  		var insertMoreModules = [
  			"var moreModules = chunk.modules, chunkIds = chunk.ids;",
  			"for(var moduleId in moreModules) {",
  			this.indent(this.renderAddModule(hash, chunk, "moduleId", "moreModules[moduleId]")),
  			"}"
  		];
  		if(self.asyncChunkLoading) {
  			return this.asString([
  				"// \"0\" is the signal for \"already loaded\"",
  				"if(installedChunks[chunkId] === 0)",
  				this.indent([
  					"return Promise.resolve();"
  				]),
  				"// array of [resolve, reject, promise] means \"currently loading\"",
  				"if(installedChunks[chunkId])",
  				this.indent([
  					"return installedChunks[chunkId][2];"
  				]),
  				"// load the chunk and return promise to it",
  				"var promise = new Promise(function(resolve, reject) {",
  				this.indent([
  					"installedChunks[chunkId] = [resolve, reject];",
  					"var filename = __dirname + " + this.applyPluginsWaterfall("asset-path", JSON.stringify("/" + chunkFilename), {
  						hash: "\" + " + this.renderCurrentHashCode(hash) + " + \"",
  						hashWithLength: function(length) {
  							return "\" + " + this.renderCurrentHashCode(hash, length) + " + \"";
  						}.bind(this),
  						chunk: {
  							id: "\" + chunkId + \"",
  							hash: "\" + " + JSON.stringify(chunkMaps.hash) + "[chunkId] + \"",
  							hashWithLength: function(length) {
  								var shortChunkHashMap = {};
  								Object.keys(chunkMaps.hash).forEach(function(chunkId) {
  									if(typeof chunkMaps.hash[chunkId] === "string")
  										shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length);
  								});
  								return "\" + " + JSON.stringify(shortChunkHashMap) + "[chunkId] + \"";
  							},
  							name: "\" + (" + JSON.stringify(chunkMaps.name) + "[chunkId]||chunkId) + \""
  						}
  					}) + ";",
  					"require('fs').readFile(filename, 'utf-8',  function(err, content) {",
  					this.indent([
  						"if(err) return reject(err);",
  						"var chunk = {};",
  						"require('vm').runInThisContext('(function(exports, require, __dirname, __filename) {' + content + '\\n})', filename)" +
  						"(chunk, require, require('path').dirname(filename), filename);"
  					].concat(insertMoreModules).concat([
  						"var callbacks = [];",
  						"for(var i = 0; i < chunkIds.length; i++) {",
  						this.indent([
  							"if(installedChunks[chunkIds[i]])",
  							this.indent([
  								"callbacks = callbacks.concat(installedChunks[chunkIds[i]][0]);"
  							]),
  							"installedChunks[chunkIds[i]] = 0;"
  						]),
  						"}",
  						"for(i = 0; i < callbacks.length; i++)",
  						this.indent("callbacks[i]();")
  					])),
  					"});"
  				]),
  				"});",
  				"return installedChunks[chunkId][2] = promise;"
  			]);
  		} else {
  			var request = this.applyPluginsWaterfall("asset-path", JSON.stringify("./" + chunkFilename), {
  				hash: "\" + " + this.renderCurrentHashCode(hash) + " + \"",
  				hashWithLength: function(length) {
  					return "\" + " + this.renderCurrentHashCode(hash, length) + " + \"";
  				}.bind(this),
  				chunk: {
  					id: "\" + chunkId + \"",
  					hash: "\" + " + JSON.stringify(chunkMaps.hash) + "[chunkId] + \"",
  					hashWithLength: function(length) {
  						var shortChunkHashMap = {};
  						Object.keys(chunkMaps.hash).forEach(function(chunkId) {
  							if(typeof chunkMaps.hash[chunkId] === "string")
  								shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length);
  						});
  						return "\" + " + JSON.stringify(shortChunkHashMap) + "[chunkId] + \"";
  					},
  					name: "\" + (" + JSON.stringify(chunkMaps.name) + "[chunkId]||chunkId) + \""
  				}
  			});
  			return this.asString([
  				"// \"0\" is the signal for \"already loaded\"",
  				"if(installedChunks[chunkId] !== 0) {",
  				this.indent([
  					"var chunk = require(" + request + ");"
  				].concat(insertMoreModules).concat([
  					"for(var i = 0; i < chunkIds.length; i++)",
  					this.indent("installedChunks[chunkIds[i]] = 0;")
  				])),
  				"}",
  				"return Promise.resolve();"
  			]);
  		}
  	});
  	mainTemplate.plugin("hot-bootstrap", function(source, chunk, hash) {
  		var hotUpdateChunkFilename = this.outputOptions.hotUpdateChunkFilename;
  		var hotUpdateMainFilename = this.outputOptions.hotUpdateMainFilename;
  		var chunkMaps = chunk.getChunkMaps();
  		var currentHotUpdateChunkFilename = this.applyPluginsWaterfall("asset-path", JSON.stringify(hotUpdateChunkFilename), {
  			hash: "\" + " + this.renderCurrentHashCode(hash) + " + \"",
  			hashWithLength: function(length) {
  				return "\" + " + this.renderCurrentHashCode(hash, length) + " + \"";
  			}.bind(this),
  			chunk: {
  				id: "\" + chunkId + \"",
  				hash: "\" + " + JSON.stringify(chunkMaps.hash) + "[chunkId] + \"",
  				hashWithLength: function(length) {
  					var shortChunkHashMap = {};
  					Object.keys(chunkMaps.hash).forEach(function(chunkId) {
  						if(typeof chunkMaps.hash[chunkId] === "string")
  							shortChunkHashMap[chunkId] = chunkMaps.hash[chunkId].substr(0, length);
  					});
  					return "\" + " + JSON.stringify(shortChunkHashMap) + "[chunkId] + \"";
  				},
  				name: "\" + (" + JSON.stringify(chunkMaps.name) + "[chunkId]||chunkId) + \""
  			}
  		});
  		var currentHotUpdateMainFilename = this.applyPluginsWaterfall("asset-path", JSON.stringify(hotUpdateMainFilename), {
  			hash: "\" + " + this.renderCurrentHashCode(hash) + " + \"",
  			hashWithLength: function(length) {
  				return "\" + " + this.renderCurrentHashCode(hash, length) + " + \"";
  			}.bind(this)
  		});
  		return Template.getFunctionContent(self.asyncChunkLoading ? require("./NodeMainTemplateAsync.runtime.js") : require("./NodeMainTemplate.runtime.js"))
  			.replace(/\$require\$/g, this.requireFn)
  			.replace(/\$hotMainFilename\$/g, currentHotUpdateMainFilename)
  			.replace(/\$hotChunkFilename\$/g, currentHotUpdateChunkFilename);
  	});
  	mainTemplate.plugin("hash", function(hash) {
  		hash.update("node");
  		hash.update("3");
  		hash.update(this.outputOptions.filename + "");
  		hash.update(this.outputOptions.chunkFilename + "");
  	});
  };
  