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Use devtool for unknown property warning #5590

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merged 3 commits into from Dec 24, 2015
Merged

Use devtool for unknown property warning #5590

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a55ab28
Initial outline for new devtools api
jimfb Nov 12, 2015
30ef056
Moved unknown-prop warning into a devtool
jimfb Dec 3, 2015
26f3785
Use duck typing instead of allocating event objects
jimfb Dec 17, 2015
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70 changes: 10 additions & 60 deletions src/renderers/dom/shared/DOMPropertyOperations.js
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Open in desktop
Expand Up @@ -12,7 +12,7 @@
'use strict';

var DOMProperty = require('DOMProperty');
var EventPluginRegistry = require('EventPluginRegistry');
var ReactDOMInstrumentation = require('ReactDOMInstrumentation');
var ReactPerf = require('ReactPerf');

var quoteAttributeValueForBrowser = require('quoteAttributeValueForBrowser');
Expand Down Expand Up @@ -51,59 +51,6 @@ function shouldIgnoreValue(propertyInfo, value) {
(propertyInfo.hasOverloadedBooleanValue && value === false);
}

if (__DEV__) {
var reactProps = {
children: true,
dangerouslySetInnerHTML: true,
key: true,
ref: true,
};
var warnedProperties = {};

var warnUnknownProperty = function(name) {
if (reactProps.hasOwnProperty(name) && reactProps[name] ||
warnedProperties.hasOwnProperty(name) && warnedProperties[name]) {
return;
}

warnedProperties[name] = true;
var lowerCasedName = name.toLowerCase();

// data-* attributes should be lowercase; suggest the lowercase version
var standardName = (
DOMProperty.isCustomAttribute(lowerCasedName) ?
lowerCasedName :
DOMProperty.getPossibleStandardName.hasOwnProperty(lowerCasedName) ?
DOMProperty.getPossibleStandardName[lowerCasedName] :
null
);

// For now, only warn when we have a suggested correction. This prevents
// logging too much when using transferPropsTo.
warning(
standardName == null,
'Unknown DOM property %s. Did you mean %s?',
name,
standardName
);

var registrationName = (
EventPluginRegistry.possibleRegistrationNames.hasOwnProperty(
lowerCasedName
) ?
EventPluginRegistry.possibleRegistrationNames[lowerCasedName] :
null
);

warning(
registrationName == null,
'Unknown event handler property %s. Did you mean `%s`?',
name,
registrationName
);
};
}

/**
* Operations for dealing with DOM properties.
*/
Expand Down Expand Up @@ -140,6 +87,9 @@ var DOMPropertyOperations = {
* @return {?string} Markup string, or null if the property was invalid.
*/
createMarkupForProperty: function(name, value) {
if (__DEV__) {
ReactDOMInstrumentation.debugTool.onCreateMarkupForProperty(name, value);
}
var propertyInfo = DOMProperty.properties.hasOwnProperty(name) ?
DOMProperty.properties[name] : null;
if (propertyInfo) {
Expand All @@ -157,8 +107,6 @@ var DOMPropertyOperations = {
return '';
}
return name + '=' + quoteAttributeValueForBrowser(value);
} else if (__DEV__) {
warnUnknownProperty(name);
}
return null;
},
Expand All @@ -185,6 +133,9 @@ var DOMPropertyOperations = {
* @param {*} value
*/
setValueForProperty: function(node, name, value) {
if (__DEV__) {
ReactDOMInstrumentation.debugTool.onSetValueForProperty(node, name, value);
}
var propertyInfo = DOMProperty.properties.hasOwnProperty(name) ?
DOMProperty.properties[name] : null;
if (propertyInfo) {
Expand Down Expand Up @@ -219,8 +170,6 @@ var DOMPropertyOperations = {
}
} else if (DOMProperty.isCustomAttribute(name)) {
DOMPropertyOperations.setValueForAttribute(node, name, value);
} else if (__DEV__) {
warnUnknownProperty(name);
}
},

Expand All @@ -242,6 +191,9 @@ var DOMPropertyOperations = {
* @param {string} name
*/
deleteValueForProperty: function(node, name) {
if (__DEV__) {
ReactDOMInstrumentation.debugTool.onDeleteValueForProperty(node, name);
}
var propertyInfo = DOMProperty.properties.hasOwnProperty(name) ?
DOMProperty.properties[name] : null;
if (propertyInfo) {
Expand All @@ -263,8 +215,6 @@ var DOMPropertyOperations = {
}
} else if (DOMProperty.isCustomAttribute(name)) {
node.removeAttribute(name);
} else if (__DEV__) {
warnUnknownProperty(name);
}
},

Expand Down
66 changes: 66 additions & 0 deletions src/renderers/dom/shared/ReactDOMDebugTool.js
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Open in desktop
@@ -0,0 +1,66 @@
/**
* Copyright 2013-2015, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule ReactDOMDebugTool
*/

'use strict';

var ReactDOMUnknownPropertyDevtool = require('ReactDOMUnknownPropertyDevtool');

var warning = require('warning');

var eventHandlers = [];
var handlerDoesThrowForEvent = {};

function emitEvent(handlerFunctionName, arg1, arg2, arg3, arg4, arg5) {
if (__DEV__) {
eventHandlers.forEach(function(handler) {
try {
if (handler[handlerFunctionName]) {
handler[handlerFunctionName](arg1, arg2, arg3, arg4, arg5);
}
} catch (e) {
warning(
!handlerDoesThrowForEvent[handlerFunctionName],
'exception thrown by devtool while handling %s: %s',
handlerFunctionName,
e.message
);
handlerDoesThrowForEvent[handlerFunctionName] = true;
}
});
}
}

var ReactDOMDebugTool = {
addDevtool(devtool) {
eventHandlers.push(devtool);
},
removeDevtool(devtool) {
for (var i = 0; i < eventHandlers.length; i++) {
if (eventHandlers[i] === devtool) {
eventHandlers.splice(i, 1);
i--;
}
}
},
onCreateMarkupForProperty(name, value) {
emitEvent('onCreateMarkupForProperty', name, value);
},
onSetValueForProperty(node, name, value) {
emitEvent('onSetValueForProperty', node, name, value);
},
onDeleteValueForProperty(node, name) {
emitEvent('onDeleteValueForProperty', node, name);
},
};

ReactDOMDebugTool.addDevtool(ReactDOMUnknownPropertyDevtool);

module.exports = ReactDOMDebugTool;
16 changes: 16 additions & 0 deletions src/renderers/dom/shared/ReactDOMInstrumentation.js
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@@ -0,0 +1,16 @@
/**
* Copyright 2013-2015, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule ReactDOMInstrumentation
*/

'use strict';

var ReactDOMDebugTool = require('ReactDOMDebugTool');

module.exports = {debugTool: ReactDOMDebugTool};
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What is the difference between “debug tool” and a “dev tool”? I got tripped by this a couple of times because I write a Devtool but I’m then adding it to a DebugTool which I refer to as ReactDOMInstrumentation.debugTool. Why is there more than one layer of indirection?

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There is only ever one debug tool. A debug tool doesn't (necessarily) have the overhead of emitting events, so it is suitable for collecting ultra-accurate performance metrics.

The default debug tool is an event emitter, into which you can plug dev tools.

A dev tool is something that is not performance critical. Things like emitting warnings, high-level performance metrics, interactive chrome extensions, etc. You want to maintain good performance, but you're willing to eat the cost of event delegation for the purposes of a slightly better API (ie. the ability to have multiple devtools at the same time, functions you don't implement are ignored, errors thrown in a devtool don't take down the app, etc).

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Thank you for explaining. I’m curious because I wonder how something like Chrome extension would work once we port it to use this API. Currently Chrome extension works with production builds. Would that no longer be the case (presumably because production builds would use a noop debug tool)?

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Correct, my guess is that devtools would only work in dev mode, but it's an easy thing to change if we change our minds.

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To add more context, I am adding some events that will be useful both to React DevTools and new ReactPerf in #6068. If those are DEV-only, the new ReactPerf would also be DEV-only which would defeat the purpose of ReactPerf. How would debug tool / devtool distinction handle this problem?

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I think Sebastian was thinking about creating a third build called "profile", which follows all the "production" codepaths with the exception of having debugtool enabled.

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Do these different builds have any overlap with the feature flags such as https://github.com/facebook/react/blob/3b96650e39ddda5ba49245713ef16dbc52d25e9e/src/shared/utils/ReactFeatureFlags.js?

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Yes, eventually. Right now it's controlled by __DEV__, and is not as simple as just replacing all __DEV__s with a feature flag for reasons around dead code elimination.

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Thanks, @jimfb. The “eventually” part is all I need to know :)

35 changes: 0 additions & 35 deletions src/renderers/dom/shared/__tests__/DOMPropertyOperations-test.js
View file
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Expand Up @@ -50,41 +50,6 @@ describe('DOMPropertyOperations', function() {
)).toBe('id="simple"');
});

it('should warn about incorrect casing on properties', function() {
spyOn(console, 'error');
expect(DOMPropertyOperations.createMarkupForProperty(
'tabindex',
'1'
)).toBe(null);
expect(console.error.argsForCall.length).toBe(1);
expect(console.error.argsForCall[0][0]).toContain('tabIndex');
});

it('should warn about incorrect casing on event handlers', function() {
spyOn(console, 'error');
expect(DOMPropertyOperations.createMarkupForProperty(
'onclick',
'1'
)).toBe(null);
expect(DOMPropertyOperations.createMarkupForProperty(
'onKeydown',
'1'
)).toBe(null);
expect(console.error.argsForCall.length).toBe(2);
expect(console.error.argsForCall[0][0]).toContain('onClick');
expect(console.error.argsForCall[1][0]).toContain('onKeyDown');
});

it('should warn about class', function() {
spyOn(console, 'error');
expect(DOMPropertyOperations.createMarkupForProperty(
'class',
'muffins'
)).toBe(null);
expect(console.error.argsForCall.length).toBe(1);
expect(console.error.argsForCall[0][0]).toContain('className');
});

it('should create markup for boolean properties', function() {
expect(DOMPropertyOperations.createMarkupForProperty(
'checked',
Expand Down
23 changes: 23 additions & 0 deletions src/renderers/dom/shared/__tests__/ReactDOMComponent-test.js
View file
Open in desktop
Expand Up @@ -1087,5 +1087,28 @@ describe('ReactDOMComponent', function() {
'See Link > a > ... > Link > a.'
);
});

it('should warn about incorrect casing on properties', function() {
spyOn(console, 'error');
ReactDOMServer.renderToString(React.createElement('input', {type: 'text', tabindex: '1'}));
expect(console.error.argsForCall.length).toBe(1);
expect(console.error.argsForCall[0][0]).toContain('tabIndex');
});

it('should warn about incorrect casing on event handlers', function() {
spyOn(console, 'error');
ReactDOMServer.renderToString(React.createElement('input', {type: 'text', onclick: '1'}));
ReactDOMServer.renderToString(React.createElement('input', {type: 'text', onKeydown: '1'}));
expect(console.error.argsForCall.length).toBe(2);
expect(console.error.argsForCall[0][0]).toContain('onClick');
expect(console.error.argsForCall[1][0]).toContain('onKeyDown');
});

it('should warn about class', function() {
spyOn(console, 'error');
ReactDOMServer.renderToString(React.createElement('div', {class: 'muffins'}));
expect(console.error.argsForCall.length).toBe(1);
expect(console.error.argsForCall[0][0]).toContain('className');
});
});
});
87 changes: 87 additions & 0 deletions src/renderers/dom/shared/devtools/ReactDOMUnknownPropertyDevtool.js
View file
Open in desktop
@@ -0,0 +1,87 @@
/**
* Copyright 2013-2015, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule ReactDOMUnknownPropertyDevtool
*/

'use strict';

var DOMProperty = require('DOMProperty');
var EventPluginRegistry = require('EventPluginRegistry');

var warning = require('warning');

if (__DEV__) {
var reactProps = {
children: true,
dangerouslySetInnerHTML: true,
key: true,
ref: true,
};
var warnedProperties = {};

var warnUnknownProperty = function(name) {
if (DOMProperty.properties.hasOwnProperty(name) || DOMProperty.isCustomAttribute(name)) {
return;
}
if (reactProps.hasOwnProperty(name) && reactProps[name] ||
warnedProperties.hasOwnProperty(name) && warnedProperties[name]) {
return;
}

warnedProperties[name] = true;
var lowerCasedName = name.toLowerCase();

// data-* attributes should be lowercase; suggest the lowercase version
var standardName = (
DOMProperty.isCustomAttribute(lowerCasedName) ?
lowerCasedName :
DOMProperty.getPossibleStandardName.hasOwnProperty(lowerCasedName) ?
DOMProperty.getPossibleStandardName[lowerCasedName] :
null
);

// For now, only warn when we have a suggested correction. This prevents
// logging too much when using transferPropsTo.
warning(
standardName == null,
'Unknown DOM property %s. Did you mean %s?',
name,
standardName
);

var registrationName = (
EventPluginRegistry.possibleRegistrationNames.hasOwnProperty(
lowerCasedName
) ?
EventPluginRegistry.possibleRegistrationNames[lowerCasedName] :
null
);

warning(
registrationName == null,
'Unknown event handler property %s. Did you mean `%s`?',
name,
registrationName
);
};
}

var ReactDOMUnknownPropertyDevtool = {
onCreateMarkupForProperty(name, value) {
warnUnknownProperty(name);
},
onSetValueForProperty(node, name, value) {
warnUnknownProperty(name);
},
onDeleteValueForProperty(node, name) {
warnUnknownProperty(name);
},
}

module.exports = ReactDOMUnknownPropertyDevtool;