source: frontend/node_modules/webpack/lib/wasm-async/AsyncWebAssemblyGenerator.js

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

"use strict";

const { RawSource } = require("webpack-sources");
const Generator = require("../Generator");
const { WEBASSEMBLY_TYPES } = require("../ModuleSourceTypeConstants");

/** @typedef {import("webpack-sources").Source} Source */
/** @typedef {import("../Generator").GenerateContext} GenerateContext */
/** @typedef {import("../Module").SourceType} SourceType */
/** @typedef {import("../Module").SourceTypes} SourceTypes */
/** @typedef {import("../NormalModule")} NormalModule */

/**
 * Represents the async web assembly generator runtime component.
 * @typedef {object} AsyncWebAssemblyGeneratorOptions
 * @property {boolean=} mangleImports mangle imports
 */

class AsyncWebAssemblyGenerator extends Generator {
        /**
         * Creates an instance of AsyncWebAssemblyGenerator.
         * @param {AsyncWebAssemblyGeneratorOptions} options options
         */
        constructor(options) {
                super();
                /** @type {AsyncWebAssemblyGeneratorOptions} */
                this.options = options;
        }

        /**
         * Returns the source types available for this module.
         * @param {NormalModule} module fresh module
         * @returns {SourceTypes} available types (do not mutate)
         */
        getTypes(module) {
                return WEBASSEMBLY_TYPES;
        }

        /**
         * Returns the estimated size for the requested source type.
         * @param {NormalModule} module the module
         * @param {SourceType=} type source type
         * @returns {number} estimate size of the module
         */
        getSize(module, type) {
                const originalSource = module.originalSource();
                if (!originalSource) {
                        return 0;
                }
                return originalSource.size();
        }

        /**
         * Generates generated code for this runtime module.
         * @param {NormalModule} module module for which the code should be generated
         * @param {GenerateContext} generateContext context for generate
         * @returns {Source | null} generated code
         */
        generate(module, generateContext) {
                return /** @type {Source} */ (module.originalSource());
        }

        /**
         * Generates fallback output for the provided error condition.
         * @param {Error} error the error
         * @param {NormalModule} module module for which the code should be generated
         * @param {GenerateContext} generateContext context for generate
         * @returns {Source | null} generated code
         */
        generateError(error, module, generateContext) {
                return new RawSource(error.message);
        }
}

module.exports = AsyncWebAssemblyGenerator;