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

	"use strict";

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

	class DefinePropertyGettersRuntimeModule extends HelperRuntimeModule {
	constructor() {
	super("define property getters");
	}

	/**
	* @returns {string} runtime code
	*/
	generate() {
	const { runtimeTemplate } = this.compilation;
	const fn = RuntimeGlobals.definePropertyGetters;
	return Template.asString([
	"// define getter functions for harmony exports",
	`${fn} = ${runtimeTemplate.basicFunction("exports, definition", [
	`for(var key in definition) {`,
	Template.indent([
	`if(${RuntimeGlobals.hasOwnProperty}(definition, key) && !${RuntimeGlobals.hasOwnProperty}(exports, key)) {`,
	Template.indent([
	"Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });"
	]),
	"}"
	]),
	"}"
	])};`
	]);
	}
	}

	module.exports = DefinePropertyGettersRuntimeModule;