fix validate bug

Author: xlorne

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@codingapi/ui-framework",
-  "version": "0.0.13",
+  "version": "0.0.14",
   "description": "A UI Framework built with React and Typescript",
   "keywords": [
     "ui",

src/Form/validate.ts

@@ -83,9 +83,10 @@ export class FormValidateContext {
         if (this.map.size <= 0) {
             return Promise.resolve(true);
         }
-        const list = Array.from(this.map.keys().map(item => {
+        const keys = this.map.keys();
+        const list = Array.from(keys).map(item => {
             return this.validateField(item, form);
-        }));
+        });
 
         const results = await Promise.all(list);
         return results.every((result) => result);