move to codemods folder [skip ci]

.eslintignore

@@ -7,6 +7,11 @@ packages/*/lib
 packages/*/dist
 packages/*/test/fixtures
 packages/*/test/tmp
+codemods/*/node_modules
+codemods/*/lib
+codemods/*/dist
+codemods/*/test/fixtures
+codemods/*/test/tmp
 packages/babel-standalone/babel.js
 packages/babel-standalone/babel.min.js
 

codemods/babel-plugin-codemod-optional-catch-binding/README.md

@@ -1,4 +1,4 @@
-# babel-plugin-transform-remove-unused-catch-binding
+# babel-plugin-codemod-optional-catch-binding
 
 > If the argument bound to the catch block is not referenced in the catch block, that argument and the catch binding is removed.
 
@@ -26,7 +26,7 @@ try {
 ## Installation
 
 ```sh
-npm install --save-dev babel-plugin-transform-remove-unused-catch-binding
+npm install --save-dev babel-plugin-codemod-optional-catch-binding
 ```
 
 ## Usage
@@ -37,21 +37,21 @@ npm install --save-dev babel-plugin-transform-remove-unused-catch-binding
 
 ```json
 {
-  "plugins": ["transform-remove-unused-catch-binding"]
+  "plugins": ["codemod-optional-catch-binding"]
 }
 ```
 
 ### Via CLI
 
 ```sh
-babel --plugins transform-remove-unused-catch-binding script.js
+babel --plugins codemod-optional-catch-binding script.js
 ```
 
 ### Via Node API
 
 ```javascript
 require("babel-core").transform("code", {
-  plugins: ["transform-remove-unused-catch-binding"]
+  plugins: ["codemod-optional-catch-binding"]
 });
 ```
 

codemods/babel-plugin-codemod-optional-catch-binding/lib/index.js

@@ -0,0 +1,37 @@
+"use strict";
+
+exports.__esModule = true;
+
+exports.default = function (babel) {
+  const {
+    types: t
+  } = babel;
+  return {
+    inherits: _babelPluginSyntaxOptionalCatchBinding2.default,
+    visitor: {
+      CatchClause(path) {
+        if (path.node.param === null || !t.isIdentifier(path.node.param)) {
+          return;
+        }
+
+        const binding = path.scope.getOwnBinding(path.node.param.name);
+
+        if (binding.constantViolations.length > 0) {
+          return;
+        }
+
+        if (!binding.referenced) {
+          const paramPath = path.get("param");
+          paramPath.remove();
+        }
+      }
+
+    }
+  };
+};
+
+var _babelPluginSyntaxOptionalCatchBinding = require("babel-plugin-syntax-optional-catch-binding");
+
+var _babelPluginSyntaxOptionalCatchBinding2 = _interopRequireDefault(_babelPluginSyntaxOptionalCatchBinding);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

codemods/babel-plugin-codemod-optional-catch-binding/package.json

@@ -1,5 +1,5 @@
 {
-  "name": "babel-plugin-transform-remove-unused-catch-binding",
+  "name": "babel-plugin-codemod-optional-catch-binding",
   "version": "7.0.0-beta.0",
   "description": "Remove unused catch bindings",
   "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-remove-unused-catch-binding",