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-rw-r--r--packages/console/core/src/util/memo.ts18
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
+}