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/**
* Guided Tours Rendering Codemod
* Transform directly inlined JSX markup into render props. That makes initial load
* faster and the Guided Tours get properly translated.
*/
const prettier = require( 'prettier' );
const config = require( './config' );
export default function transformer( file, api ) {
const j = api.jscodeshift;
const root = j( file.source );
/* Does the file have any <Step> JSX instances? */
const stepEls = root.findJSXElements( 'Step' );
if ( stepEls.size() === 0 ) {
// nothing to transform here
return null;
}
stepEls.forEach( ( stepEl ) => {
/* Extract the children */
const stepElValue = stepEl.get().value;
const { children } = stepElValue;
/* Wrap them in a functional component with Fragment */
const trIden = j.identifier( 'translate' );
const trProp = j.property( 'init', trIden, trIden );
trProp.shorthand = true;
const fragmentIden = j.jsxIdentifier( 'Fragment' );
const childrenFunc = j.arrowFunctionExpression(
[ j.objectPattern( [ trProp ] ) ],
j.jsxElement(
j.jsxOpeningElement( fragmentIden ),
j.jsxClosingElement( fragmentIden ),
children
)
);
/* Replace the children JSX with the functional component */
stepElValue.children = [ j.jsxExpressionContainer( childrenFunc ) ];
} );
/* Add `Fragment` to React imports */
const reactImport = root.find( j.ImportDeclaration, { source: { value: 'react' } } );
reactImport.get().value.specifiers.push( j.importSpecifier( j.identifier( 'Fragment' ) ) );
/* Remove the i18n import */
const i18nImport = root.find( j.ImportDeclaration, { source: { value: 'i18n-calypso' } } );
i18nImport.remove();
return prettier.format( root.toSource( config.recastOptions ), {} );
}
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