Protect better against createElement(null/undefined) #2726
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Based on #2607 if we take this we should backport to 0.12 |
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Updated after talking to @sebmarkbage - creating the element should apparently be allowed (since in theory it's totally possible to create an element literal with undefined type), though we may throw when rendering. We'll warn in DEV (thus the use of ReactElementValidator) but not in prod. |
src/classic/element/ReactElement.js
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This adds a warning to React.createElement in __DEV__ about using null or undefined. This is technically valid since element creation can be considered safe and usable in multiple rendering environments. But rendering in a DOM environment with an element with null/undefined type is not safe.
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Protect better against createElement(null/undefined)
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Protect better against createElement(null/undefined) Conflicts: src/classic/element/__tests__/ReactElementValidator-test.js
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This adds a warning to React.createElement in DEV about using null
or undefined. This is technically valid since element creation can be
considered safe and usable in multiple rendering environments. But
rendering in a DOM environment with an element with null/undefined type
is not safe.
Fixes #2607