getFormatterFor(extensions) {
		const options = [[null, strings.none]];
		for (const { id, name, exts } of this.formatters) {
			const supports = exts.some((ext) => extensions.includes(ext));
			if (supports || exts.includes("*")) {
				options.push([id, name]);
			}
		}
		return options;
	}
@param {string[]} extensions
@returns {Array<[id: String, name: String]>} options