codemod to replace Array.each to for-in in javascript

source.ts

/**
 * Paste or drop some JavaScript here and explore
 * the syntax tree created by chosen parser.
 * You can use all the cool new features from ES6
 * and even more. Enjoy!
 */

const name = 1
const description = 'Yo ' + name + '! How are you doing? ' +  1 

let tips = [
  "Click on any AST node with a '+' to expand it",

  "Hovering over a node highlights the \
   corresponding location in the source code",

  "Shift click on an AST node to expand the whole subtree"
];

function printTips() {
  tips.forEach((tip, i) => console.log(`Tip ${i}:` + tip));
}

target.ts

/**
 * Paste or drop some JavaScript here and explore
 * the syntax tree created by chosen parser.
 * You can use all the cool new features from ES6
 * and even more. Enjoy!
 */

const name = 1
const description = 'Yo ' + name + '! How are you doing? ' +  1 

let tips = [
  "Click on any AST node with a '+' to expand it",

  "Hovering over a node highlights the \
   corresponding location in the source code",

  "Shift click on an AST node to expand the whole subtree"
];

function printTips() {
  for (const i in tips) {
   const tip = tips[i];
   console.log(`Tip ${i}:` + tip);
  };
}

transformer.ts

// jscodeshift can take a parser, like "babel", "babylon", "flow", "ts", or "tsx"
// Read more: https://github.com/facebook/jscodeshift#parser

// Press ctrl+space for code completion
export default function transformer(file, api) {
  const j = api.jscodeshift;
  j;
  return j(file.source)
    .find(j.CallExpression, {
      callee: {
        type: "MemberExpression",
        property: { type: "Identifier", name: "forEach" },
      },
    })
    .replaceWith((path) => {
      const funcNode = path.node.arguments[0];
      const name = path.node.callee.object.name;
      const [valueNode, indexNode] = funcNode.params;
      const handlerNode = funcNode.body;

      const variable = j.variableDeclaration("const", [
        j.variableDeclarator(
          j.identifier(valueNode.name),
          j.memberExpression(
            j.identifier(name),
            j.identifier(indexNode.name),
            true
          )
        ),
      ]);

      const body = j.blockStatement([
        variable,
        j.expressionStatement(handlerNode),
      ]);

      const left = j.variableDeclaration("const", [
        j.identifier(indexNode.name),
      ]);

      const right = j.identifier("tips");

      return j.forInStatement(left, right, body);
    })
    .toSource();
}