githubmirror/immutable-js

src/utils/shallowCopy.js

20 строк420 B

Julien Deniau

fix new proto key injection

04 мар 2026, 01:10

04 мар 2026, 01:1094bcd3c

import arrCopy from './arrCopy';
import hasOwnProperty from './hasOwnProperty';
import { isProtoKey } from './protoInjection';

export default function shallowCopy(from) {
  if (Array.isArray(from)) {
    return arrCopy(from);
  }
  const to = {};
  for (const key in from) {
    if (isProtoKey(key)) {
      continue;
    }

    if (hasOwnProperty.call(from, key)) {
      to[key] = from[key];
    }
  }
  return to;
}