webpack/lib/dependencies/ImportContextDependency.js

Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

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

"use strict";

const makeSerializable = require("../util/makeSerializable");
const ContextDependency = require("./ContextDependency");
const ContextDependencyTemplateAsRequireCall = require("./ContextDependencyTemplateAsRequireCall");

/** @typedef {import("../javascript/JavascriptParser").Range} Range */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
/** @typedef {import("./ContextDependency").ContextDependencyOptions} ContextDependencyOptions */

class ImportContextDependency extends ContextDependency {
	/**
	 * Creates an instance of ImportContextDependency.
	 * @param {ContextDependencyOptions} options options
	 * @param {Range} range range
	 * @param {Range} valueRange value range
	 */
	constructor(options, range, valueRange) {
		super(options);

		this.range = range;
		this.valueRange = valueRange;
	}

	get type() {
		return `import() context ${this.options.mode}`;
	}

	get category() {
		return "esm";
	}

	/**
	 * Returns an identifier to merge equal requests.
	 * @returns {string | null} an identifier to merge equal requests
	 */
	getResourceIdentifier() {
		let str = super.getResourceIdentifier();

		if (this.options.attributes) {
			str += `|attributes${JSON.stringify(this.options.attributes)}`;
		}

		return str;
	}

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

		write(this.valueRange);

		super.serialize(context);
	}

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

		this.valueRange = read();

		super.deserialize(context);
	}
}

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

ImportContextDependency.Template = ContextDependencyTemplateAsRequireCall;

module.exports = ImportContextDependency;