init

web/lib/ids.ts

@@ -0,0 +1,16 @@
+const UUID_RE = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+
+/** Bill tokens are UUID v4 from the tablet. */
+export function isUuid(value: string): boolean {
+  return UUID_RE.test(value);
+}
+
+/**
+ * Row ids are UUID v4, except shop_settings which the tablet seeds as "default".
+ * CHAR(36) and a tight charset. Values are still bound as parameters.
+ */
+const ROW_ID_RE = /^[0-9a-zA-Z_-]{1,36}$/;
+
+export function isRowId(value: string): boolean {
+  return ROW_ID_RE.test(value);
+}