feat:样品库管理

nx/helper/index.js

@@ -731,6 +731,17 @@ function reviver(key, value) {
   return value
 }
 
+function isJsonString(str) {
+  if (typeof str !== 'string') return false
+
+  try {
+    const parsed = JSON.parse(str)
+    return typeof parsed === 'object' && parsed !== null
+  } catch (e) {
+    return false
+  }
+}
+
 export default {
   range,
   getPx,
@@ -765,5 +776,6 @@ export default {
   showToast,
   uuid,
   replacer,
-  reviver
+  reviver,
+  isJsonString
 }