source: frontend/node_modules/webpack/lib/dependencies/CommonJsRequireDependency.js

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

"use strict";

const Dependency = require("../Dependency");
const makeSerializable = require("../util/makeSerializable");
const {
        ESM_MODULE_EXPORTS_NAME,
        getRequireEsmModuleExportsAccess,
        isRequireEsmModuleExportsModule
} = require("./CommonJsDependencyHelpers");
const ModuleDependency = require("./ModuleDependency");

/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../Dependency").RawReferencedExports} RawReferencedExports */
/** @typedef {import("../Dependency").ReferencedExports} ReferencedExports */
/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("../Module")} Module */
/** @typedef {import("../ModuleGraph")} ModuleGraph */
/** @typedef {import("../javascript/JavascriptParser").Range} Range */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */

class CommonJsRequireDependency extends ModuleDependency {
        /**
         * Creates an instance of CommonJsRequireDependency.
         * @param {string} request request
         * @param {Range=} range location in source code of the string-literal argument (gets replaced by the module id)
         * @param {string=} context request context
         * @param {RawReferencedExports | null=} referencedExports list of referenced exports
         * @param {Range=} valueRange location in source code of the whole `require(...)` call (for `require(esm)` interop)
         */
        constructor(
                request,
                range,
                context,
                referencedExports = null,
                valueRange = undefined
        ) {
                super(request);
                this.range = range;
                this._context = context;
                this.referencedExports = referencedExports;
                this.valueRange = valueRange;
        }

        get type() {
                return "cjs require";
        }

        get category() {
                return "commonjs";
        }

        /**
         * Returns list of exports referenced by this dependency
         * @param {ModuleGraph} moduleGraph module graph
         * @param {RuntimeSpec} runtime the runtime for which the module is analysed
         * @returns {ReferencedExports} referenced exports
         */
        getReferencedExports(moduleGraph, runtime) {
                const importedModule = moduleGraph.getModule(this);
                if (
                        importedModule &&
                        isRequireEsmModuleExportsModule(importedModule, moduleGraph)
                ) {
                        // `require(esm)` will unwrap the "module.exports" named export; only
                        // that export is observable through this `require()` call.
                        return [[ESM_MODULE_EXPORTS_NAME]];
                }
                if (!this.referencedExports) return Dependency.EXPORTS_OBJECT_REFERENCED;
                return this.referencedExports.map((name) => ({
                        name,
                        canMangle: false
                }));
        }

        /**
         * Serializes this instance into the provided serializer context.
         * @param {ObjectSerializerContext} context context
         */
        serialize(context) {
                const { write } = context;
                write(this.referencedExports);
                write(this.valueRange);
                super.serialize(context);
        }

        /**
         * Restores this instance from the provided deserializer context.
         * @param {ObjectDeserializerContext} context context
         */
        deserialize(context) {
                const { read } = context;
                this.referencedExports = read();
                this.valueRange = read();
                super.deserialize(context);
        }
}

CommonJsRequireDependency.Template = class CommonJsRequireDependencyTemplate extends (
        ModuleDependency.Template
) {
        /**
         * Applies the plugin by registering its hooks on the compiler.
         * @param {Dependency} dependency the dependency for which the template should be applied
         * @param {ReplaceSource} source the current replace source which can be modified
         * @param {DependencyTemplateContext} templateContext the context object
         * @returns {void}
         */
        apply(
                dependency,
                source,
                { runtimeTemplate, moduleGraph, chunkGraph, runtime }
        ) {
                const dep = /** @type {CommonJsRequireDependency} */ (dependency);
                if (!dep.range) return;
                const importedModule = /** @type {Module} */ (moduleGraph.getModule(dep));
                const content = runtimeTemplate.moduleId({
                        module: importedModule,
                        chunkGraph,
                        request: dep.request,
                        weak: dep.weak
                });
                source.replace(dep.range[0], dep.range[1] - 1, content);

                if (dep.valueRange && importedModule) {
                        const access = getRequireEsmModuleExportsAccess(
                                importedModule,
                                moduleGraph,
                                runtime
                        );
                        if (access !== null) {
                                source.insert(dep.valueRange[1], access);
                        }
                }
        }
};

makeSerializable(
        CommonJsRequireDependency,
        "webpack/lib/dependencies/CommonJsRequireDependency"
);

module.exports = CommonJsRequireDependency;