is-string Codemod

Introduction

This codemod removes the dependency on the is-string npm package by replacing its usage with a built-in JavaScript feature. It transforms all calls to isString into a usage of Object.prototype.toString.call, which improves performance and reduces the overall bundle size by eliminating unnecessary dependencies.

Before

import isString from 'is-string';

if (isString(value)) {
  // Do something
}

After

if (Object.prototype.toString.call(value) === '[object String]') {
  // Do something
}