GlobalRuntimeModule.js
No OneTemporary
Actions

Subscribers

None

File Metadata

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

	"use strict";

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

	class GlobalRuntimeModule extends RuntimeModule {
	constructor() {
	super("global");
	}

	/**
	* @returns {string} runtime code
	*/
	generate() {
	return Template.asString([
	`${RuntimeGlobals.global} = (function() {`,
	Template.indent([
	"if (typeof globalThis === 'object') return globalThis;",
	"try {",
	Template.indent(
	// This works in non-strict mode
	// or
	// This works if eval is allowed (see CSP)
	"return this \|\| new Function('return this')();"
	),
	"} catch (e) {",
	Template.indent(
	// This works if the window reference is available
	"if (typeof window === 'object') return window;"
	),
	"}"
	// It can still be `undefined`, but nothing to do about it...
	// We return `undefined`, instead of nothing here, so it's
	// easier to handle this case:
	// if (!global) { … }
	]),
	"})();"
	]);
	}
	}

	module.exports = GlobalRuntimeModule;