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

	"use strict";

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

	class RuntimeIdRuntimeModule extends RuntimeModule {
	constructor() {
	super("runtimeId");
	}

	/**
	* @returns {string} runtime code
	*/
	generate() {
	const { chunk, compilation } = this;
	const { chunkGraph } = compilation;
	const runtime = chunk.runtime;
	if (typeof runtime !== "string")
	throw new Error("RuntimeIdRuntimeModule must be in a single runtime");
	const id = chunkGraph.getRuntimeId(runtime);
	return `${RuntimeGlobals.runtimeId} = ${JSON.stringify(id)};`;
	}
	}

	module.exports = RuntimeIdRuntimeModule;