Function assertExactKeys

packages/runtime-host/src/protocol/codec.ts:34–49

(
  record: Record<string, unknown>,
  label: string,
  keys: readonly string[],
)

}

export function assertExactKeys(
  record: Record<string, unknown>,
  label: string,
  keys: readonly string[],
): void {
  const allowed = new Set(keys);
  if (Object.keys(record).some((key) => !allowed.has(key))) {
    throw invalidProtocolFrame(`Unknown ${label} field`);
  }
  if (
    Object.keys(record).length !== keys.length ||
    keys.some((key) => !Object.hasOwn(record, key))
  ) {
    throw invalidProtocolFrame(`Invalid ${label} fields`);
  }
}

export function requireString(value: unknown, label: string, maxLength: number): string {
  if (typeof value !== 'string' || value.length === 0 || value.length > maxLength) {