webpack/lib/dependencies/ImportMetaGlobDependencyParserPlugin.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 Natsu @xiaoxiaojx
*/

"use strict";

const {
	evaluateToIdentifier
} = require("../javascript/JavascriptParserHelpers");
const ImportMetaGlobDependency = require("./ImportMetaGlobDependency");
const { parseImportMetaGlobCall } = require("./ImportMetaGlobHelpers");

/** @typedef {import("estree").CallExpression} CallExpression */
/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */

const PLUGIN_NAME = "ImportMetaGlobDependencyParserPlugin";

module.exports = class ImportMetaGlobDependencyParserPlugin {
	/**
	 * Applies the plugin by registering its hooks on the compiler.
	 * @param {JavascriptParser} parser the parser
	 * @returns {void}
	 */
	apply(parser) {
		parser.hooks.evaluateIdentifier
			.for("import.meta.glob")
			.tap(PLUGIN_NAME, (expr) =>
				evaluateToIdentifier(
					"import.meta.glob",
					"import.meta",
					() => ["glob"],
					true
				)(expr)
			);
		parser.hooks.call.for("import.meta.glob").tap(PLUGIN_NAME, (expr) => {
			const {
				options: globOptions,
				errors,
				warnings
			} = parseImportMetaGlobCall(/** @type {CallExpression} */ (expr), parser);
			for (const warning of warnings) {
				parser.state.module.addWarning(warning);
			}
			if (errors.length) {
				for (const error of errors) parser.state.current.addError(error);
				return;
			}
			if (!globOptions) return;
			const dep = new ImportMetaGlobDependency(
				{
					request: `${globOptions.baseDir}${globOptions.query}`,
					recursive: globOptions.recursive,
					regExp: false,
					patterns: globOptions.patterns,
					requestContext: globOptions.requestContext,
					importName: globOptions.importName,
					exhaustive: globOptions.exhaustive,
					caseSensitive: globOptions.caseSensitive,
					referencedExports: globOptions.referencedExports,
					namespaceObject:
						/** @type {import("../Module").BuildMeta} */
						(parser.state.module.buildMeta).strictHarmonyModule
							? "strict"
							: true,
					mode: globOptions.mode,
					category: "esm"
				},
				globOptions.range
			);
			dep.loc = parser.getLocation(expr);
			dep.optional = Boolean(parser.scope.inTry);
			parser.state.current.addDependency(dep);
			return true;
		});
	}
};