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fix: guard missing React version export #810

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fix: guard missing React version export #810

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2 changes: 1 addition & 1 deletion src/ref.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ import { ForwardRef, isMemo } from 'react-is';
import useMemo from './hooks/useMemo';
import isFragment from './React/isFragment';

const ReactMajorVersion = Number(version.split('.')[0]);
const ReactMajorVersion = Number(version?.split('.')[0]);

export const fillRef = <T>(ref: React.Ref<T>, node: T) => {
if (typeof ref === 'function') {
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10 changes: 10 additions & 0 deletions tests/ref-version.test.ts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
jest.mock('react', () => ({
...jest.requireActual('react'),
version: undefined,
}));

describe('ref without a React version export', () => {
it('loads without throwing', () => {
expect(() => jest.requireActual('../src/ref')).not.toThrow();
});
});