Function createHash

app/src/utils.ts:20–34

(
  currentHash: string,
  newHash: Record<string, string | undefined>,
)

// Given the current hash and a record of string->strings, creates the new hash
export function createHash(
  currentHash: string,
  newHash: Record<string, string | undefined>,
): string {
  const current = parseHash(currentHash);
  const combined = { ...current, ...newHash };
  return `#${Object.entries(combined)
    .filter(([_, value]) => {
      return value !== undefined;
    })
    .map(([key, value]) => {
      return `${key}=${value}`;
    })
    .join("&")}`;
}

export function zxyFromHash(s: string): [number, number, number] | undefined {
  const split = s.split("/");