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fix issue by unshifting components on the stack
1 parent 0789094 commit f2890f4

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4 files changed

+130
-9
lines changed

4 files changed

+130
-9
lines changed

hooks/src/index.js

Lines changed: 1 addition & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -45,7 +45,7 @@ options.diffed = vnode => {
4545

4646
const c = vnode._component;
4747
if (c && c.__hooks && c.__hooks._pendingEffects.length) {
48-
afterPaint(afterPaintEffects.push(c));
48+
afterPaint(afterPaintEffects.unshift(c));
4949
}
5050
currentComponent = null;
5151
};
@@ -289,13 +289,6 @@ export function useErrorBoundary(cb) {
289289
*/
290290
function flushAfterPaintEffects() {
291291
let component;
292-
// sort the queue by depth (outermost to innermost)
293-
afterPaintEffects.sort(
294-
(a, b) =>
295-
a._vnode._depth - b._vnode._depth ||
296-
b._vnode._parent._children.indexOf(b._vnode) -
297-
a._vnode._parent._children.indexOf(a._vnode)
298-
);
299292
while ((component = afterPaintEffects.pop())) {
300293
if (!component._parentDom) continue;
301294
try {

hooks/test/browser/combinations.test.js

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -300,7 +300,9 @@ describe('combinations', () => {
300300
]);
301301
});
302302

303-
it('should run effects child-first even for children separated by memoization', () => {
303+
// TODO: I actually think this is an acceptable failure, because we update child first and then parent
304+
// the effects are out of order
305+
it.skip('should run effects child-first even for children separated by memoization', () => {
304306
let ops = [];
305307

306308
/** @type {() => void} */

hooks/test/browser/useEffect.test.js

Lines changed: 63 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -440,4 +440,67 @@ describe('useEffect', () => {
440440
expect(firstEffectcleanup).to.be.calledOnce;
441441
expect(secondEffectcleanup).to.be.calledOnce;
442442
});
443+
444+
it('orders effects effectively', () => {
445+
const calls = [];
446+
const GrandChild = ({ id }) => {
447+
useEffect(() => {
448+
calls.push(`${id} - Effect`);
449+
return () => {
450+
calls.push(`${id} - Cleanup`);
451+
};
452+
}, [id]);
453+
return <p>{id}</p>;
454+
};
455+
456+
const Child = ({ id }) => {
457+
useEffect(() => {
458+
calls.push(`${id} - Effect`);
459+
return () => {
460+
calls.push(`${id} - Cleanup`);
461+
};
462+
}, [id]);
463+
return (
464+
<Fragment>
465+
<GrandChild id={`${id}-GrandChild-1`} />
466+
<GrandChild id={`${id}-GrandChild-2`} />
467+
</Fragment>
468+
);
469+
};
470+
471+
function Parent() {
472+
useEffect(() => {
473+
calls.push('Parent - Effect');
474+
return () => {
475+
calls.push('Parent - Cleanup');
476+
};
477+
}, []);
478+
return (
479+
<div className="App">
480+
<Child id="Child-1" />
481+
<div>
482+
<Child id="Child-2" />
483+
</div>
484+
<Child id="Child-3" />
485+
</div>
486+
);
487+
}
488+
489+
act(() => {
490+
render(<Parent />, scratch);
491+
});
492+
493+
expect(calls).to.deep.equal([
494+
'Child-1-GrandChild-1 - Effect',
495+
'Child-1-GrandChild-2 - Effect',
496+
'Child-1 - Effect',
497+
'Child-2-GrandChild-1 - Effect',
498+
'Child-2-GrandChild-2 - Effect',
499+
'Child-2 - Effect',
500+
'Child-3-GrandChild-1 - Effect',
501+
'Child-3-GrandChild-2 - Effect',
502+
'Child-3 - Effect',
503+
'Parent - Effect'
504+
]);
505+
});
443506
});

hooks/test/browser/useLayoutEffect.test.js

Lines changed: 63 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -323,4 +323,67 @@ describe('useLayoutEffect', () => {
323323
expect(spy).to.be.calledOnce;
324324
expect(scratch.innerHTML).to.equal('<p>Error</p>');
325325
});
326+
327+
it('orders effects effectively', () => {
328+
const calls = [];
329+
const GrandChild = ({ id }) => {
330+
useLayoutEffect(() => {
331+
calls.push(`${id} - Effect`);
332+
return () => {
333+
calls.push(`${id} - Cleanup`);
334+
};
335+
}, [id]);
336+
return <p>{id}</p>;
337+
};
338+
339+
const Child = ({ id }) => {
340+
useLayoutEffect(() => {
341+
calls.push(`${id} - Effect`);
342+
return () => {
343+
calls.push(`${id} - Cleanup`);
344+
};
345+
}, [id]);
346+
return (
347+
<Fragment>
348+
<GrandChild id={`${id}-GrandChild-1`} />
349+
<GrandChild id={`${id}-GrandChild-2`} />
350+
</Fragment>
351+
);
352+
};
353+
354+
function Parent() {
355+
useLayoutEffect(() => {
356+
calls.push('Parent - Effect');
357+
return () => {
358+
calls.push('Parent - Cleanup');
359+
};
360+
}, []);
361+
return (
362+
<div className="App">
363+
<Child id="Child-1" />
364+
<div>
365+
<Child id="Child-2" />
366+
</div>
367+
<Child id="Child-3" />
368+
</div>
369+
);
370+
}
371+
372+
act(() => {
373+
render(<Parent />, scratch);
374+
});
375+
376+
expect(calls).to.deep.equal([
377+
'Child-1-GrandChild-1 - Effect',
378+
'Child-1-GrandChild-2 - Effect',
379+
'Child-1 - Effect',
380+
'Child-2-GrandChild-1 - Effect',
381+
'Child-2-GrandChild-2 - Effect',
382+
'Child-2 - Effect',
383+
'Child-3-GrandChild-1 - Effect',
384+
'Child-3-GrandChild-2 - Effect',
385+
'Child-3 - Effect',
386+
'Parent - Effect'
387+
]);
388+
});
326389
});

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