adds reverse id preset

Author: danieldelcore

codemods/reverse-identifiers/transform.spec.ts

@@ -0,0 +1,20 @@
+import { applyTransform } from "@codeshift/test-utils";
+import * as transformer from "./transform";
+
+describe("codeshift-community#reverse-identifiers transform", () => {
+  it("should transform correctly", async () => {
+    const result = await applyTransform(
+      transformer,
+      `
+var foo = 'codeshift-community';
+console.log(foo);
+      `,
+      { parser: "tsx" }
+    );
+
+    expect(result).toMatchInlineSnapshot(`
+      "var oof = 'codeshift-community';
+      elosnoc.gol(oof);"
+    `);
+  });
+});

codemods/reverse-identifiers/transform.ts

@@ -0,0 +1,37 @@
+import { API, FileInfo, Options } from "jscodeshift";
+
+export default function transformer(
+  file: FileInfo,
+  { jscodeshift: j }: API,
+  options: Options
+) {
+  const source = j(file.source);
+
+  /**
+   * Codemod logic goes here 👇
+   * -----
+   * This is where the core logic for your codemod will go,
+   * consider grouping specific actions into 'motions' and running them in sequence
+   *
+   * See this page for more information:
+   * https://codeshiftcommunity.github.io/CodeshiftCommunity/docs/authoring#motions
+   */
+  source.find(j.Identifier).forEach((path) => {
+    j(path).replaceWith(
+      j.identifier(
+        path.node.name
+          .split("")
+          .reverse()
+          .join("")
+      )
+    );
+  });
+
+  /**
+   * Return your modified AST here 👇
+   * -----
+   * This is where your modified AST will be transformed back into a string
+   * and written back to the file.
+   */
+  return source.toSource(options.printOptions);
+}