feat: skip instead of error for class components

__testfixtures__/react/func-default-props-to-params/class-component.input.js

@@ -0,0 +1,24 @@
+import React, { Component } from 'react';
+
+class C extends Component {
+  constructor(props) {
+    super(props)
+    this.state = {
+      count: 0,
+    }
+  }
+
+  render() {
+    const { onChange, type, value } = this.props
+    return (
+      <input onChange={onChange} type={type} value={value} />
+    )
+  }
+};
+
+C.defaultProps = {
+  value: '',
+  type: 'text',
+};
+
+export default C;

__tests__/react/func-default-props-to-params.test.js

@@ -16,7 +16,7 @@ const transformTests = [
   'forward-ref-function-component-w-default-export',
 ]
 
-const noTransformTests = ['function-component-wo-default-props']
+const noTransformTests = ['function-component-wo-default-props', 'class-component']
 
 const fixturesDir = path.join(
   __dirname,

transforms/react/func-default-props-to-params.js

@@ -36,9 +36,17 @@ module.exports = (fileInfo, api, options) => {
   const defaultPropsNames = defaultPropsPropertiesNodePath.map((prop) => prop.node.key.name)
   const defaultPropsValues = defaultPropsPropertiesNodePath.map((prop) => prop.node.value)
 
-  const componentPropsObjectPropertiesNodePath = root
+  const componentCol = root
     .find(j.VariableDeclarator, { id: { name: componentName } }) // returns a jscodeshift Collection
     .find(j.ArrowFunctionExpression)
+  if (componentCol.length <= 0) {
+    process.stdout.write(
+      'Class components will continue to support `defaultProps` on React 19 since there is no ES6 alternative. Please consider using `static defaultProps` to remove this alert.\r',
+    )
+    return null // skip transform
+  }
+
+  const componentPropsObjectPropertiesNodePath = componentCol
     .at(0) // returns the 1st ast-types NodePath, with name 'init', or 0 for the argument (assuming there is only one ObjectPattern in the params, so no: ({ a }, { b }) => {...}) of a forwardRef CallExpression
     .get('params', 0, 'properties') // returns an ast-types NodePath