seroval/src/core/utils/valid-properties.ts

Stringify JS values

import {
  SYM_ASYNC_ITERATOR,
  SYM_IS_CONCAT_SPREADABLE,
  SYM_ITERATOR,
  SYM_TO_STRING_TAG,
} from '../symbols';

export function isValidKey(key: string): boolean {
  switch (key) {
    case 'constructor':
    case '__proto__':
    case 'prototype':
    case '__defineGetter__':
    case '__defineSetter__':
    case '__lookupGetter__':
    case '__lookupSetter__':
      // case 'then':
      return false;
    default:
      return true;
  }
}

export function isValidSymbol(symbol: symbol): boolean {
  switch (symbol) {
    case SYM_ASYNC_ITERATOR:
    case SYM_IS_CONCAT_SPREADABLE:
    case SYM_TO_STRING_TAG:
    case SYM_ITERATOR:
      return true;
    default:
      return false;
  }
}