Function getEnumerableKeys

async/all_keyed.ts:7–13

(obj: object)

// This equivalent is faster on V8: Object.keys returns only enumerable string keys,
// so we only need to filter symbol keys for enumerability. See also assert/equal.ts.
function getEnumerableKeys(obj: object): PropertyKey[] {
  const stringKeys = Object.keys(obj);
  const symbolKeys = Object.getOwnPropertySymbols(obj).filter((key) =>
    Object.prototype.propertyIsEnumerable.call(obj, key)
  );
  return [...stringKeys, ...symbolKeys];
}

/**
 * A record type where values can be promise-like (thenables) or plain values.