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

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Natsu @xiaoxiaojx
*/

"use strict";

const InitFragment = require("../InitFragment");
const makeSerializable = require("../util/makeSerializable");
const NullDependency = require("./NullDependency");

/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../Dependency")} Dependency */
/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/**
 * A dependency that adds an init fragment to the module
 */
class ModuleInitFragmentDependency extends NullDependency {
        /**
         * Creates an instance of ModuleInitFragmentDependency.
         * @param {string} initCode the initialization code
         * @param {string[]} runtimeRequirements runtime requirements
         * @param {string=} key unique key to avoid emitting the same initialization code twice
         */
        constructor(initCode, runtimeRequirements, key) {
                super();
                this.initCode = initCode;
                this.runtimeRequirements = runtimeRequirements;
                this.key = key;
        }

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

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

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

ModuleInitFragmentDependency.Template = class ModuleInitFragmentDependencyTemplate extends (
        NullDependency.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, { initFragments, runtimeRequirements }) {
                const dep = /** @type {ModuleInitFragmentDependency} */ (dependency);
                for (const req of dep.runtimeRequirements) {
                        runtimeRequirements.add(req);
                }
                initFragments.push(
                        new InitFragment(
                                dep.initCode,
                                InitFragment.STAGE_CONSTANTS,
                                0,
                                dep.key,
                                undefined
                        )
                );
        }
};

module.exports = ModuleInitFragmentDependency;