Deduplicate warning on invalid callback (facebook#11833)

Author: yenshih

packages/react-dom/src/__tests__/ReactUpdates-test.js

@@ -842,8 +842,6 @@ describe('ReactUpdates', () => {
   });
 
   it('throws in setState if the update callback is not a function', () => {
-    spyOnDev(console, 'error');
-
     function Foo() {
       this.a = 1;
       this.b = 2;
@@ -859,44 +857,43 @@ describe('ReactUpdates', () => {
 
     let component = ReactTestUtils.renderIntoDocument(<A />);
 
-    expect(() => component.setState({}, 'no')).toThrowError(
+    expect(() => {
+      expect(() => component.setState({}, 'no')).toWarnDev(
+        'setState(...): Expected the last optional `callback` argument to be ' +
+          'a function. Instead received: no.',
+      );
+    }).toThrowError(
       'Invalid argument passed as callback. Expected a function. Instead ' +
         'received: no',
     );
-    if (__DEV__) {
-      expect(console.error.calls.argsFor(0)[0]).toContain(
+    component = ReactTestUtils.renderIntoDocument(<A />);
+    expect(() => {
+      expect(() => component.setState({}, {foo: 'bar'})).toWarnDev(
         'setState(...): Expected the last optional `callback` argument to be ' +
-          'a function. Instead received: no.',
+          'a function. Instead received: [object Object].',
       );
-    }
-    component = ReactTestUtils.renderIntoDocument(<A />);
-    expect(() => component.setState({}, {foo: 'bar'})).toThrowError(
+    }).toThrowError(
       'Invalid argument passed as callback. Expected a function. Instead ' +
         'received: [object Object]',
     );
-    if (__DEV__) {
-      expect(console.error.calls.argsFor(1)[0]).toContain(
+    component = ReactTestUtils.renderIntoDocument(<A />);
+    expect(() => {
+      expect(() => component.setState({}, new Foo())).toWarnDev(
         'setState(...): Expected the last optional `callback` argument to be ' +
           'a function. Instead received: [object Object].',
       );
-    }
+    }).toThrowError(
+      'Invalid argument passed as callback. Expected a function. Instead ' +
+        'received: [object Object]',
+    );
     component = ReactTestUtils.renderIntoDocument(<A />);
-    expect(() => component.setState({}, new Foo())).toThrowError(
+    expect(() => component.setState({}, {a: 1, b: 2})).toThrowError(
       'Invalid argument passed as callback. Expected a function. Instead ' +
         'received: [object Object]',
     );
-    if (__DEV__) {
-      expect(console.error.calls.argsFor(2)[0]).toContain(
-        'setState(...): Expected the last optional `callback` argument to be ' +
-          'a function. Instead received: [object Object].',
-      );
-      expect(console.error.calls.count()).toBe(3);
-    }
   });
 
   it('throws in forceUpdate if the update callback is not a function', () => {
-    spyOnDev(console, 'error');
-
     function Foo() {
       this.a = 1;
       this.b = 2;
@@ -912,39 +909,40 @@ describe('ReactUpdates', () => {
 
     let component = ReactTestUtils.renderIntoDocument(<A />);
 
-    expect(() => component.forceUpdate('no')).toThrowError(
+    expect(() => {
+      expect(() => component.forceUpdate('no')).toWarnDev(
+        'forceUpdate(...): Expected the last optional `callback` argument to be ' +
+          'a function. Instead received: no.',
+      );
+    }).toThrowError(
       'Invalid argument passed as callback. Expected a function. Instead ' +
         'received: no',
     );
-    if (__DEV__) {
-      expect(console.error.calls.argsFor(0)[0]).toContain(
+    component = ReactTestUtils.renderIntoDocument(<A />);
+    expect(() => {
+      expect(() => component.forceUpdate({foo: 'bar'})).toWarnDev(
         'forceUpdate(...): Expected the last optional `callback` argument to be ' +
-          'a function. Instead received: no.',
+          'a function. Instead received: [object Object].',
       );
-    }
-    component = ReactTestUtils.renderIntoDocument(<A />);
-    expect(() => component.forceUpdate({foo: 'bar'})).toThrowError(
+    }).toThrowError(
       'Invalid argument passed as callback. Expected a function. Instead ' +
         'received: [object Object]',
     );
-    if (__DEV__) {
-      expect(console.error.calls.argsFor(1)[0]).toContain(
+    component = ReactTestUtils.renderIntoDocument(<A />);
+    expect(() => {
+      expect(() => component.forceUpdate(new Foo())).toWarnDev(
         'forceUpdate(...): Expected the last optional `callback` argument to be ' +
           'a function. Instead received: [object Object].',
       );
-    }
+    }).toThrowError(
+      'Invalid argument passed as callback. Expected a function. Instead ' +
+        'received: [object Object]',
+    );
     component = ReactTestUtils.renderIntoDocument(<A />);
-    expect(() => component.forceUpdate(new Foo())).toThrowError(
+    expect(() => component.forceUpdate({a: 1, b: 2})).toThrowError(
       'Invalid argument passed as callback. Expected a function. Instead ' +
         'received: [object Object]',
     );
-    if (__DEV__) {
-      expect(console.error.calls.argsFor(2)[0]).toContain(
-        'forceUpdate(...): Expected the last optional `callback` argument to be ' +
-          'a function. Instead received: [object Object].',
-      );
-      expect(console.error.calls.count()).toBe(3);
-    }
   });
 
   it('does not update one component twice in a batch (#2410)', () => {
@@ -1228,8 +1226,6 @@ describe('ReactUpdates', () => {
   );
 
   it('uses correct base state for setState inside render phase', () => {
-    spyOnDev(console, 'error');
-
     let ops = [];
 
     class Foo extends React.Component {
@@ -1246,14 +1242,10 @@ describe('ReactUpdates', () => {
     }
 
     const container = document.createElement('div');
-    ReactDOM.render(<Foo />, container);
+    expect(() => ReactDOM.render(<Foo />, container)).toWarnDev(
+      'Cannot update during an existing state transition',
+    );
     expect(ops).toEqual(['base: 0, memoized: 0', 'base: 1, memoized: 1']);
-    if (__DEV__) {
-      expect(console.error.calls.count()).toBe(1);
-      expect(console.error.calls.argsFor(0)[0]).toContain(
-        'Cannot update during an existing state transition',
-      );
-    }
   });
 
   it('does not re-render if state update is null', () => {

packages/react-reconciler/src/ReactFiberClassComponent.js

@@ -44,16 +44,24 @@ let didWarnAboutStateAssignmentForComponent;
 let warnOnInvalidCallback;
 
 if (__DEV__) {
+  const didWarnOnInvalidCallback = {};
   didWarnAboutStateAssignmentForComponent = {};
 
   warnOnInvalidCallback = function(callback: mixed, callerName: string) {
-    warning(
-      callback === null || typeof callback === 'function',
-      '%s(...): Expected the last optional `callback` argument to be a ' +
-        'function. Instead received: %s.',
-      callerName,
-      callback,
-    );
+    if (callback === null || typeof callback === 'function') {
+      return;
+    }
+    const key = `${callerName}_${JSON.stringify(callback)}`;
+    if (!didWarnOnInvalidCallback[key]) {
+      warning(
+        false,
+        '%s(...): Expected the last optional `callback` argument to be a ' +
+          'function. Instead received: %s.',
+        callerName,
+        callback,
+      );
+      didWarnOnInvalidCallback[key] = true;
+    }
   };
 
   // This is so gross but it's at least non-critical and can be removed if