source: trip-planner-front/node_modules/webpack/lib/web/FetchCompileWasmPlugin.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Tobias Koppers @sokra
*/

"use strict";

const RuntimeGlobals = require("../RuntimeGlobals");
const WasmChunkLoadingRuntimeModule = require("../wasm-sync/WasmChunkLoadingRuntimeModule");

/** @typedef {import("../Compiler")} Compiler */

// TODO webpack 6 remove

class FetchCompileWasmPlugin {
        constructor(options) {
                this.options = options || {};
        }

        /**
         * Apply the plugin
         * @param {Compiler} compiler the compiler instance
         * @returns {void}
         */
        apply(compiler) {
                compiler.hooks.thisCompilation.tap(
                        "FetchCompileWasmPlugin",
                        compilation => {
                                const globalWasmLoading = compilation.outputOptions.wasmLoading;
                                const isEnabledForChunk = chunk => {
                                        const options = chunk.getEntryOptions();
                                        const wasmLoading =
                                                options && options.wasmLoading !== undefined
                                                        ? options.wasmLoading
                                                        : globalWasmLoading;
                                        return wasmLoading === "fetch";
                                };
                                const generateLoadBinaryCode = path =>
                                        `fetch(${RuntimeGlobals.publicPath} + ${path})`;

                                compilation.hooks.runtimeRequirementInTree
                                        .for(RuntimeGlobals.ensureChunkHandlers)
                                        .tap("FetchCompileWasmPlugin", (chunk, set) => {
                                                if (!isEnabledForChunk(chunk)) return;
                                                const chunkGraph = compilation.chunkGraph;
                                                if (
                                                        !chunkGraph.hasModuleInGraph(
                                                                chunk,
                                                                m => m.type === "webassembly/sync"
                                                        )
                                                ) {
                                                        return;
                                                }
                                                set.add(RuntimeGlobals.moduleCache);
                                                set.add(RuntimeGlobals.publicPath);
                                                compilation.addRuntimeModule(
                                                        chunk,
                                                        new WasmChunkLoadingRuntimeModule({
                                                                generateLoadBinaryCode,
                                                                supportsStreaming: true,
                                                                mangleImports: this.options.mangleImports
                                                        })
                                                );
                                        });
                        }
                );
        }
}

module.exports = FetchCompileWasmPlugin;