cypress: Cannot run example specs - Webpack Compilation Error

Current behavior:

I cannot open any example tests. Each try generates the same error

Error: Webpack Compilation Error
./cypress/integration/examples/aliasing.spec.js

Module build failed (from C:/user_path/Cypress/Cache/5.1.0/Cypress/resources/app/packages/server/node_modules/babel-loader/lib/index.js):

Error: The 'decorators' plugin requires a 'decoratorsBeforeExport' option, whose value must be a boolean. If you are migrating from Babylon/Babel 6 or want to use the old decorators proposal, you should use the 'decorators-legacy' plugin instead of 'decorators'.

Desired behavior:

Example tests should be run and working after Cypress installation

Test code to reproduce

Instll Cypress (npm install cypress --save-dev)
Open desktop app (npx cypress open)
Pick up one of the existing example tests

Versions

Node 10.22.0 npm 6.14.6 Cypress 5.1.0 Windows 10 Chrome 85.0.4183.83 (Official Build) (64-bit)

About this issue

Original URL
State: closed
Created 4 years ago
Reactions: 12
Comments: 19 (5 by maintainers)

Most upvoted comments

Webpack Compilation Error
./cypress/support/index.js
Module build failed (from /Users/gustavop/Library/Caches/Cypress/5.2.0/Cypress.app/Contents/Resources/app/packages/server/node_modules/babel-loader/lib/index.js):
Error: Cannot find module 'babel-plugin-transform-class-properties' from '/Users/gustavop/code/sst-digital'
Webpack Compilation Error
./cypress/integration/examples/actions.spec.js
Module build failed (from /Users/gustavop/Library/Caches/Cypress/5.2.0/Cypress.app/Contents/Resources/app/packages/server/node_modules/babel-loader/lib/index.js):
Error: Cannot find module 'babel-plugin-transform-class-properties' from '/Users/gustavop/code/sst-digital'

Same here.

+17

nelsongustavo on Oct 9, 2020

Just delete the last two folders i.e. Plugings & supports and see the magic

pratikraut840 on Mar 18, 2022

@testingy12345 are you able to file a separate issue with a reproduction that we can run to recreate the issue?

AtofStryker on Sep 6, 2023

const { should } = require(“chai”)

Remove the above line from your code, this line maybe on top of you commands.js file This will fix the error for me

this line “const { should } = require(“chai”)” has appear somehow in my spec.js file on the top. I have remove it and it’s working.

MartaSwieboda on Oct 19, 2021

const { should } = require(“chai”)

Remove the above line from your code, this line maybe on top of you commands.js file This will fix the error for me

AdinaFakih on Jul 16, 2021

Duplicate of https://github.com/cypress-io/cypress/issues/8364

jennifer-shehane on Jan 12, 2021