Msw/2/Imports

1.0.5Last update Sep 16, 2025

Codemod verified

Official codemod published by a verified account. Learn more.

Following the original msw upgrade guide, there are certain imports that changed their location and/or naming. This codemod will adjust your imports to the new location and naming.

setupWorker is now imported from msw/browser
rest from msw is now named http
RestHandler from msw is now named HttpHandler

Before

import { rest as caller, RestHandler, setupWorker } from "msw";

const handlers: RestHandler[] = [
  caller.get("/user", (req, res, ctx) => {
    return res(ctx.json({ firstName: "John" }));
  }),
];

After

import { http as caller, HttpHandler } from "msw";
import { setupWorker } from "msw/browser";

const handlers: HttpHandler[] = [
  caller.get("/user", (req, res, ctx) => {
    return res(ctx.json({ firstName: "John" }));
  }),
];

Following the original msw upgrade guide, there are certain imports that changed their location and/or naming. This codemod will adjust your imports to the new location and naming.

setupWorker is now imported from msw/browser
rest from msw is now named http
RestHandler from msw is now named HttpHandler

Before

import { rest as caller, RestHandler, setupWorker } from "msw";

const handlers: RestHandler[] = [
  caller.get("/user", (req, res, ctx) => {
    return res(ctx.json({ firstName: "John" }));
  }),
];

After

import { http as caller, HttpHandler } from "msw";
import { setupWorker } from "msw/browser";

const handlers: HttpHandler[] = [
  caller.get("/user", (req, res, ctx) => {
    return res(ctx.json({ firstName: "John" }));
  }),
];

Build custom codemods

Use AI-powered codemod studio and automate undifferentiated tasks for yourself, colleagues or the community

Get Started Now