rudeshark.net/packages/client/src/scripts/url.ts

export function query(obj: Record<string, any>): string {
	const params = Object.entries(obj)
		.filter(([, v]) => (Array.isArray(v) ? v.length : v !== undefined))
		.reduce((a, [k, v]) => ((a[k] = v), a), {} as Record<string, any>);

	return Object.entries(params)
		.map((p) => `${p[0]}=${encodeURIComponent(p[1])}`)
		.join("&");
}

export function appendQuery(url: string, query: string): string {
	return `${url}${
		/\?/.test(url) ? (url.endsWith("?") ? "" : "&") : "?"
	}${query}`;
}