diff options
Diffstat (limited to 'packages/shared/src/util/lazy.ts')
| -rw-r--r-- | packages/shared/src/util/lazy.ts | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/packages/shared/src/util/lazy.ts b/packages/shared/src/util/lazy.ts new file mode 100644 index 000000000..935ebe0f9 --- /dev/null +++ b/packages/shared/src/util/lazy.ts @@ -0,0 +1,11 @@ +export function lazy<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 + } +} |
