From 220697c455229125e9c22c3e0a20f2f535230b5f Mon Sep 17 00:00:00 2001
From: Justin Kahn <justindavidkahn@gmail.com>
Date: Thu, 22 Aug 2019 11:41:42 +0800
Subject: [PATCH] fix: static method inheritance

---
 src/index.js       | 15 +++++----------
 test/index.spec.js | 24 ++++++++++++++++++++----
 2 files changed, 25 insertions(+), 14 deletions(-)

diff --git a/src/index.js b/src/index.js
index eb1d4e3..e06308e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -19,21 +19,16 @@ const initMeta = {
 
 class Field {
     static create(com, options = {}) {
-        return new Field(com, options);
+        return new this(com, options);
     }
 
     static getUseField({ useState, useMemo }) {
-        return function(options = {}) {
+        return (options = {}) => {
             const [, setState] = useState();
 
-            const field = useMemo(() => {
-                return new Field(
-                    {
-                        setState,
-                    },
-                    options
-                );
-            }, [setState]);
+            const field = useMemo(() => this.create({ setState }, options), [
+                setState,
+            ]);
 
             return field;
         };
diff --git a/test/index.spec.js b/test/index.spec.js
index 29a653d..5c2e665 100644
--- a/test/index.spec.js
+++ b/test/index.spec.js
@@ -14,12 +14,28 @@ const FormItem = Form.Item;
 /* eslint-disable react/jsx-filename-extension */
 /*global describe it afterEach */
 describe('field', () => {
-    it('should create new field with `Field.create`', function() {
-        const field = Field.create(this);
+    describe('Field.create', function() {
+        it('should create new field', function() {
+            const field = Field.create(this);
+
+            assert(!!field);
+            assert(Field.prototype.isPrototypeOf(field));
+        })
+
+        it('should have subclass prototype', function() {
+            class myField extends Field {
+                constructor(com, options = {}) {
+                    super(com, options);
+                }
+            }
+            const field = myField.create(this);
+
+            assert(!!field);
+            assert(myField.prototype.isPrototypeOf(field));
+        })
 
-        assert(!!field);
-        assert(Field.prototype.isPrototypeOf(field));
     })
+
     describe('render', () => {
         it('should support Form', function(done) {
             class Demo extends React.Component {