text: /*
  	MIT License http://www.opensource.org/licenses/mit-license.php
  	Author Tobias Koppers @sokra
  */
  var Tapable = require("tapable");
  var ConcatSource = require("webpack-core/lib/ConcatSource");
  
  function Template(outputOptions) {
  	Tapable.call(this);
  	this.outputOptions = outputOptions || {};
  }
  module.exports = Template;
  
  Template.getFunctionContent = function(fn) {
  	return fn.toString().replace(/^function\s?\(\)\s?\{\n?|\n?\}$/g, "").replace(/^\t/mg, "");
  };
  
  Template.toIdentifier = function(str) {
  	if(typeof str !== "string") return "";
  	return str.replace(/^[^a-zA-Z$_]/, "_").replace(/[^a-zA-Z0-9$_]/g, "_");
  };
  
  Template.prototype = Object.create(Tapable.prototype);
  Template.prototype.constructor = Template;
  
  Template.prototype.indent = function indent(str) {
  	if(Array.isArray(str)) {
  		return str.map(indent).join("\n");
  	} else {
  		str = str.trimRight();
  		if(!str) return "";
  		var ind = (str[0] === "\n" ? "" : "\t");
  		return ind + str.replace(/\n([^\n])/g, "\n\t$1");
  	}
  };
  
  Template.prototype.prefix = function(str, prefix) {
  	if(Array.isArray(str)) {
  		str = str.join("\n");
  	}
  	str = str.trim();
  	if(!str) return "";
  	var ind = (str[0] === "\n" ? "" : prefix);
  	return ind + str.replace(/\n([^\n])/g, "\n" + prefix + "$1");
  };
  
  Template.prototype.asString = function(str) {
  	if(Array.isArray(str)) {
  		return str.join("\n");
  	}
  	return str;
  };
  
  Template.prototype.getModulesArrayBounds = function(modules) {
  	if(modules.some(function(module) {
  			return typeof module.id !== "number";
  		}))
  		return false;
  	var maxId = -Infinity;
  	var minId = Infinity;
  	modules.forEach(function(module) {
  		if(maxId < module.id) maxId = module.id;
  		if(minId > module.id) minId = module.id;
  	});
  	if(minId < 16 + ("" + minId).length) {
  		// add minId x ',' instead of 'Array(minId).concat(...)'
  		minId = 0;
  	}
  	var objectOverhead = modules.map(function(module) {
  		var idLength = (module.id + "").length;
  		return idLength + 2;
  	}).reduce(function(a, b) {
  		return a + b;
  	}, -1);
  	var arrayOverhead = minId === 0 ? maxId : 16 + ("" + minId).length + maxId;
  	return arrayOverhead < objectOverhead ? [minId, maxId] : false;
  };
  
  Template.prototype.renderChunkModules = function(chunk, moduleTemplate, dependencyTemplates, prefix) {
  	if(!prefix) prefix = "";
  	var source = new ConcatSource();
  	if(chunk.modules.length === 0) {
  		source.add("[]");
  		return source;
  	}
  	var bounds = this.getModulesArrayBounds(chunk.modules);
  	if(bounds) {
  		// Render a spare array
  		var minId = bounds[0];
  		var maxId = bounds[1];
  		if(minId !== 0) source.add("Array(" + minId + ").concat(");
  		source.add("[\n");
  		var modules = {};
  		chunk.modules.forEach(function(module) {
  			modules[module.id] = module;
  		});
  		for(var idx = minId; idx <= maxId; idx++) {
  			var module = modules[idx];
  			if(idx !== minId) source.add(",\n");
  			source.add("/* " + idx + " */");
  			if(module) {
  				source.add("\n");
  				source.add(moduleTemplate.render(module, dependencyTemplates, chunk));
  			}
  		}
  		source.add("\n" + prefix + "]");
  		if(minId !== 0) source.add(")");
  	} else {
  		// Render an object
  		source.add("{\n");
  		chunk.modules.forEach(function(module, idx) {
  			if(idx !== 0) source.add(",\n");
  			source.add("\n/***/ " + JSON.stringify(module.id) + ":\n");
  			source.add(moduleTemplate.render(module, dependencyTemplates, chunk));
  		});
  		source.add("\n\n" + prefix + "}");
  	}
  	return source;
  };
  