parseSync(file, config) {
		const { language, languageOptions } = config;
		const result = language.parse(file, { languageOptions });

		if (typeof result.then === "function") {
			throw new Error("Unsupported: Language parser returned a promise.");
		}

		if (result.ok) {
			return {
				ok: true,
				sourceCode: language.createSourceCode(file, result, {
					languageOptions,
				}),
			};
		}

		// if we made it to here there was an error
		return {
			ok: false,
			errors: result.errors.map(error => ({
				ruleId: null,
				nodeType: null,
				fatal: true,
				severity: 2,
				message: `Parsing error: ${error.message}`,
				line: error.line,
				column: error.column,
			})),
		};
	}
Parses the given file synchronously.
@param {VFile} file The file to parse.
@param {{language:Language,languageOptions:LanguageOptions}} config The configuration to use.
@returns {Object} An object with the parsed source code or errors.
@throws {Error} If the parser returns a promise.