// from https://github.com/sindresorhus/split-on-first
export function splitOnFirst(string: string, separator: string) {
  if (!(typeof string === "string" && typeof separator === "string")) {
    throw new TypeError("Expected the arguments to be of type `string`");
  }

  if (string === "" || separator === "") {
    return [];
  }

  const separatorIndex = string.indexOf(separator);

  if (separatorIndex === -1) {
    return [];
  }

  return [string.slice(0, separatorIndex), string.slice(separatorIndex + separator.length)];
}