chore: move mixins

src-next/mixins/field.js

@@ -0,0 +1,26 @@
+export const FieldMixin = {
+  inject: {
+    vanField: {
+      default: null,
+    },
+  },
+
+  watch: {
+    value() {
+      const field = this.vanField;
+
+      if (field) {
+        field.resetValidation();
+        field.validateWithTrigger('onChange');
+      }
+    },
+  },
+
+  created() {
+    const field = this.vanField;
+
+    if (field && !field.children) {
+      field.children = this;
+    }
+  },
+};