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[fix] displayName: avoid a crash when using React.memo #2587

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merged 1 commit into from Mar 7, 2020
Merged

[fix] displayName: avoid a crash when using React.memo #2587

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4 changes: 3 additions & 1 deletion lib/util/Components.js
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Expand Up @@ -483,7 +483,9 @@ function componentRule(rule, context) {
}
if (body.type === 'BlockStatement') {
const jsxElement = body.body.find(item => item.type === 'ReturnStatement');
return jsxElement && this.getComponentNameFromJSXElement(jsxElement.argument);
return jsxElement &&
jsxElement.argument &&
this.getComponentNameFromJSXElement(jsxElement.argument);
}
return null;
},
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8 changes: 8 additions & 0 deletions tests/lib/rules/display-name.js
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Expand Up @@ -463,6 +463,14 @@ ruleTester.run('display-name', rule, {
return <div>Hello {world}</div>
})
`
}, {
code: `
import React from 'react';

const Hello = React.memo(function Hello() {
return;
});
`
}, {
code: `
import React from 'react'
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