rename left ts files to tsx and ban ts file extension

Summary: mass files rename

Reviewed By: passy

Differential Revision: D33890304

fbshipit-source-id: c057ac9fe87dd7659597c85d640619b93e1ff0e6

desktop/eslint-plugin-flipper/src/rules/noIPrefixInterfaces.tsx

@@ -0,0 +1,54 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import {createESLintRule} from '../utils/createEslintRule';
+
+type Options = [];
+
+export type MessageIds = 'noTsInterfacePrefixI';
+export const RULE_NAME = 'no-i-prefix-interfaces';
+
+export default createESLintRule<Options, MessageIds>({
+  name: RULE_NAME,
+  meta: {
+    type: 'problem',
+    docs: {
+      description: 'Avoid prefixing TS interfaces with "I"',
+      recommended: 'error',
+    },
+    schema: [],
+    messages: {
+      noTsInterfacePrefixI: 'Do not prefix interfaces with "I"',
+    },
+  },
+  defaultOptions: [],
+  create(context) {
+    return {
+      TSInterfaceDeclaration(node) {
+        const [l1, l2, l3] = node.id.name;
+        if (
+          l1 === 'I' &&
+          isLetter(l2) &&
+          l2 === l2.toUpperCase() &&
+          isLetter(l3) &&
+          l3 === l3.toLowerCase()
+        ) {
+          context.report({
+            node: node.id,
+            messageId: 'noTsInterfacePrefixI',
+          });
+        }
+      },
+    };
+  },
+});
+
+function isLetter(x: string | undefined): boolean {
+  return typeof x === 'string' && /^[a-z]$/i.test(x);
+}