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use react-is in pretty-format #8060

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merged 10 commits into from Mar 7, 2019
Merged

use react-is in pretty-format #8060

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35e22a7
use react-is in pretty-format
mishra-prabhakar Mar 6, 2019
7d1a2d9
drop explicit equality check boolean return type
mishra-prabhakar Mar 6, 2019
0596689
isElement check for React element
mishra-prabhakar Mar 6, 2019
d23746f
pass element instead of type
mishra-prabhakar Mar 6, 2019
46b85d0
fix typo for getting name of forwardRef
mishra-prabhakar Mar 6, 2019
80cf7e6
pass type to isMemo
mishra-prabhakar Mar 6, 2019
982fd30
Update CHANGELOG.md
SimenB Mar 7, 2019
09ffcce
Merge branch 'master' into pretty-format/#7895
SimenB Mar 7, 2019
6192fda
Merge branch 'master' into pretty-format/#7895
mishra-prabhakar Mar 7, 2019
a694a1f
Update CHANGELOG.md
SimenB Mar 7, 2019
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4 changes: 3 additions & 1 deletion packages/pretty-format/package.json
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Expand Up @@ -15,12 +15,14 @@
"dependencies": {
"@jest/types": "^24.1.0",
"ansi-regex": "^4.0.0",
"ansi-styles": "^3.2.0"
"ansi-styles": "^3.2.0",
"react-is": "^16.8.4"
},
"devDependencies": {
"@types/ansi-regex": "^4.0.0",
"@types/ansi-styles": "^3.2.1",
"@types/react": "*",
"@types/react-is": "^16.7.1",
"@types/react-test-renderer": "*",
"immutable": "4.0.0-rc.9",
"react": "*",
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17 changes: 7 additions & 10 deletions packages/pretty-format/src/plugins/ReactElement.ts
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Expand Up @@ -5,6 +5,7 @@
* LICENSE file in the root directory of this source tree.
*/

import * as ReactIs from 'react-is';
import {Config, NewPlugin, Printer, Refs} from '../types';

import {
Expand All @@ -15,11 +16,6 @@ import {
} from './lib/markup';

const elementSymbol = Symbol.for('react.element');
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const fragmentSymbol = Symbol.for('react.fragment');
const forwardRefSymbol = Symbol.for('react.forward_ref');
const providerSymbol = Symbol.for('react.provider');
const contextSymbol = Symbol.for('react.context');
const memoSymbol = Symbol.for('react.memo');

// Given element.props.children, or subtree during recursive traversal,
// return flattened array of children.
Expand All @@ -42,27 +38,28 @@ const getType = (element: any) => {
if (typeof type === 'function') {
return type.displayName || type.name || 'Unknown';
}
if (type === fragmentSymbol) {

if (ReactIs.isFragment(element) === true) {
return 'React.Fragment';
}
if (typeof type === 'object' && type !== null) {
if (type.$$typeof === providerSymbol) {
if (ReactIs.isContextProvider(type) === true) {
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return 'Context.Provider';
}

if (type.$$typeof === contextSymbol) {
if (ReactIs.isContextConsumer(type) === true) {
return 'Context.Consumer';
}

if (type.$$typeof === forwardRefSymbol) {
if (ReactIs.isForwardRef(type) === true) {
const functionName = type.render.displayName || type.render.name || '';

return functionName !== ''
? 'ForwardRef(' + functionName + ')'
: 'ForwardRef';
}

if (type.$$typeof === memoSymbol) {
if (ReactIs.isMemo(type) === true) {
const functionName = type.type.displayName || type.type.name || '';

return functionName !== '' ? 'Memo(' + functionName + ')' : 'Memo';
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