Function replacer

packages/shared/src/toDisplayString.ts:38–62

(_key: string, val: unknown)

}

const replacer = (_key: string, val: unknown): any => {
  if (isRef(val)) {
    return replacer(_key, val.value)
  } else if (isMap(val)) {
    return {
      [`Map(${val.size})`]: [...val.entries()].reduce(
        (entries, [key, val], i) => {
          entries[stringifySymbol(key, i) + ' =>'] = val
          return entries
        },
        {} as Record<string, any>,
      ),
    }
  } else if (isSet(val)) {
    return {
      [`Set(${val.size})`]: [...val.values()].map(v => stringifySymbol(v)),
    }
  } else if (isSymbol(val)) {
    return stringifySymbol(val)
  } else if (isObject(val) && !isArray(val) && !isPlainObject(val)) {
    // native elements
    return String(val)
  }
  return val
}

const stringifySymbol = (v: unknown, i: number | string = ''): any =>
  // Symbol.description in es2019+ so we need to cast here to pass