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Throw more specific error if passed undefined in React.cloneElement #12534

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merged 14 commits into from
Apr 10, 2018
Merged

Throw more specific error if passed undefined in React.cloneElement #12534

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7bc5fd5
throw error if passed undefined
Apr 4, 2018
8ee2452
should be TypeError
Apr 4, 2018
33d1edf
simplify
Apr 5, 2018
48c7b53
use invariant
Apr 5, 2018
34816fc
editor messed up spacing
Apr 5, 2018
2733707
better check
Apr 6, 2018
44df599
Revert "better check"
Apr 6, 2018
7f6d18b
Merge branch 'master' into clone-element-throw-error-on-undefined
Apr 6, 2018
baa4d84
yarn prettier test was failing
Apr 6, 2018
80de944
more explicit copy
Apr 6, 2018
e3416ee
es6 import
Apr 6, 2018
905abfc
tests
Apr 10, 2018
d20de72
formatting
Apr 10, 2018
070ef20
Move import
gaearon Apr 10, 2018
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4 changes: 4 additions & 0 deletions packages/react/src/ReactElement.js
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Original file line number Diff line number Diff line change
Expand Up @@ -290,6 +290,10 @@ export function cloneAndReplaceKey(oldElement, newKey) {
* See https://reactjs.org/docs/react-api.html#cloneelement
*/
export function cloneElement(element, config, children) {
if (element === undefined) {
throw new TypeError("Cannot call 'cloneElement' on undefined.");
}

let propName;

// Original props are copied
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