Created
May 26, 2017 10:27
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This codemod script transforms all anonymous class expressions that extends `React`.* to named class declarations with their `displayName` static property.
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/* Converts | |
export default class extends React.PureComponent { | |
static displayName = 'Calendar'; | |
... | |
} | |
to this: | |
export default class Calendar extends React.PureComponent { | |
... | |
} | |
---- | |
Usage: | |
jscodeshift -d -p -t moveDisplayNameToClass.js <path> | |
*/ | |
module.exports = function(file, api) { | |
const j = api.jscodeshift; | |
return j(file.source) | |
.find(j.ClassExpression, { superClass: { object: { name: 'React' } } }) | |
.filter(p => { | |
const firstBody = p.value.body.body[0]; | |
if (!firstBody) return false; | |
return firstBody.key.name === 'displayName'; | |
}) | |
.replaceWith(p => { | |
const displayName = p.value.body.body[0].value.value; | |
const newBody = p.value.body; | |
newBody.body = newBody.body.slice(1); | |
return j.classExpression( | |
j.identifier(displayName), | |
newBody, | |
p.value.superClass | |
); | |
}) | |
.toSource(); | |
}; |
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