cloud/core/src/util/memo.ts


1
2
3
4
5
6
7
8
9
10
11

export function memo<T>(fn: () => T) {
  let value: T | undefined
  let loaded = false

  return (): T => {
    if (loaded) return value as T
    loaded = true
    value = fn()
    return value as T
  }
}