Method parseCommentOptions

lib/javascript/JavascriptParser.js:5585–5622

* Parses comment options. * @param {Range} range range of the comment * @returns {{ options: Record<string, EXPECTED_ANY> | null, errors: (Error & { comment: Comment })[] | null }} result

(range)

	 * @returns {{ options: Record<string, EXPECTED_ANY> | null, errors: (Error & { comment: Comment })[] | null }} result
	 */
	parseCommentOptions(range) {
		const comments = this.getComments(range);
		if (comments.length === 0) {
			return EMPTY_COMMENT_OPTIONS;
		}
		/** @type {Record<string, EXPECTED_ANY>} */
		const options = {};
		/** @type {(Error & { comment: Comment })[]} */
		const errors = [];
		for (const comment of comments) {
			const { value } = comment;
			if (value && webpackCommentRegExp.test(value)) {
				// try compile only if webpack options comment is present
				try {
					for (let [key, val] of Object.entries(
						vm.runInContext(
							`(function(){return {${value}};})()`,
							this.magicCommentContext
						)
					)) {
						if (typeof val === "object" && val !== null) {
							val =
								val.constructor.name === "RegExp"
									? new RegExp(val)
									: JSON.parse(JSON.stringify(val));
						}
						options[key] = val;
					}
				} catch (err) {
					const newErr = new Error(String(/** @type {Error} */ (err).message));
					newErr.stack = String(/** @type {Error} */ (err).stack);
					Object.assign(newErr, { comment });
					errors.push(/** @type {(Error & { comment: Comment })} */ (newErr));
				}
			}
		}
		return { options, errors };
	}

	/**
	 * Finds the root object of a member expression chain without allocating the