STUPID SEXY TIMELINE (#16420)

1 files changed, 17 insertions, 0 deletions

diff --git a/packages/ui/src/components/text-utils.ts b/packages/ui/src/components/text-utils.ts
new file mode 100644
index 000000000..c094b5e65
--- /dev/null
+++ b/packages/ui/src/components/text-utils.ts
@@ -0,0 +1,17 @@
+/** Find the longest common character prefix between two strings. */
+export function commonPrefix(a: string, b: string) {
+  const ac = Array.from(a)
+  const bc = Array.from(b)
+  let i = 0
+  while (i < ac.length && i < bc.length && ac[i] === bc[i]) i++
+  return {
+    prefix: ac.slice(0, i).join(""),
+    aSuffix: ac.slice(i).join(""),
+    bSuffix: bc.slice(i).join(""),
+  }
+}
+
+export function list<T>(value: T[] | undefined | null, fallback: T[]): T[] {
+  if (Array.isArray(value)) return value
+  return fallback
+}