Slow pending with cypress

[iamyoki]

Prerequisites

• I confirm my issue is not in the opened issues
• I confirm the Frequently Asked Questions didn't contain the answer to my issue

Environment check

• I'm using the latest msw version
• I'm using Node.js version 14 or higher

Browsers

Chromium (Chrome, Brave, etc.)

Reproduction repository

https://github.com/QhlabTeam/cra-template-qhlab/tree/msw-cypress-slow-issue

Reproduction steps

Clone

git clone https://github.com/QhlabTeam/cra-template-qhlab.git
cd cra-template-qhlab
git switch msw-cypress-slow-issue

Install

yarn install

Run cypress

yarn scripts
# Select tests
# Select e2e-test-mock

Run e2e

• run 1-intro.cy.js
• re-run, it becomes slowly after first run

Current behavior

Since the second re-run e2e test, it becomes very slow pending js chunks due to msw serviceworker

Expected behavior

Should be normal like the first time e2e runs.

[HeVictor]

Hi @iamyoki, I've had a crack attempting to re-create the bug from cloning your repository branch and installing the deps and then running the 1-intro.cy.js followed by a re-run (selecting the e2e testing type and Chrome through Cypress). Unfortunately, I wasn't able to encounter a slow execution like you described as the second run was also pretty quick like the first. Is it possible that I'm missing some steps or there are some differences in configuration and the like?

I'm using the latest msw version with node v16.17.0, and I'm using a Mac with M1.

[iamyoki]

@HeVictor Thank you for respond,I'll check again.

[kettanaito]

No updates for about a year, I will consider this issue not reproducible.

MSW doesn't do anything special to affect the response load times. If they take too much time, I suggest investigating that in your app/test setup. Start from the "Timings" tab in the Network to see what is taking that time. That can be a good first clue.

Update all the dependencies to their latest versions before doing any debugging. Good luck!