diff options
Diffstat (limited to 'packages/console/core/src/util/memo.ts')
| -rw-r--r-- | packages/console/core/src/util/memo.ts | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/packages/console/core/src/util/memo.ts b/packages/console/core/src/util/memo.ts new file mode 100644 index 000000000..49043010f --- /dev/null +++ b/packages/console/core/src/util/memo.ts @@ -0,0 +1,18 @@ +export function memo<T>(fn: () => T, cleanup?: (input: T) => Promise<void>) { + let value: T | undefined + let loaded = false + + const result = (): T => { + if (loaded) return value as T + loaded = true + value = fn() + return value as T + } + result.reset = async () => { + if (cleanup && value) await cleanup(value) + loaded = false + value = undefined + } + + return result +} |
