source: frontend/node_modules/webpack/lib/runtime/RuntimeIdRuntimeModule.js

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

"use strict";

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

/** @typedef {import("../Chunk")} Chunk */
/** @typedef {import("../ChunkGraph")} ChunkGraph */

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

        /**
         * Generates runtime code for this runtime module.
         * @returns {string | null} runtime code
         */
        generate() {
                const chunkGraph = /** @type {ChunkGraph} */ (this.chunkGraph);
                const chunk = /** @type {Chunk} */ (this.chunk);
                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;