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-rw-r--r--packages/shared/src/util/lazy.ts11
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
+ }
+}