@types/mocha dependency in 2.3.6 breaks when using jest

What are you trying to achieve?

I am using jest as my unit test framework for a typescript project and wish to use codeceptjs to run browser tests. I am able to run both with codeceptjs@2.3.5 but upgrading to codeceptjs@2.3.6 causes breaks when building my application.

It looks like the inclusion of @types/mocha as a dependency in the 2.3.6 release is conflicting with my local @types/jest definitions.

What do you get instead?

When attempting to build the project I get lots of the following errors:

node_modules/@types/mocha/index.d.ts:2680:13 - error TS2403: Subsequent variable declarations must have the same type.  Variable 'beforeEach' must be of type 'Lifecycle', but here has type 'HookFunction'.

2680 declare var beforeEach: Mocha.HookFunction;
                 ~~~~~~~~~~

  node_modules/@types/jest/index.d.ts:34:13
    34 declare var beforeEach: jest.Lifecycle;
                   ~~~~~~~~~~
    'beforeEach' was also declared here.

node_modules/@types/mocha/index.d.ts:2698:13 - error TS2403: Subsequent variable declarations must have the same type.  Variable 'afterEach' must be of type 'Lifecycle', but here has type 'HookFunction'.

2698 declare var afterEach: Mocha.HookFunction;
                 ~~~~~~~~~

  node_modules/@types/jest/index.d.ts:36:13
    36 declare var afterEach: jest.Lifecycle;
                   ~~~~~~~~~
    'afterEach' was also declared here.

node_modules/@types/mocha/index.d.ts:2714:13 - error TS2403: Subsequent variable declarations must have the same type.  Variable 'describe' must be of type 'Describe', but here has type 'SuiteFunction'.

2714 declare var describe: Mocha.SuiteFunction;

Provide test source code if related

branch using 2.3.6 https://github.com/diversemix/bootstrap-typescript-starter/tree/codeceptjs-2.3.6-upgrade

branch using 2.3.5 https://github.com/diversemix/bootstrap-typescript-starter/tree/master

run: yarn yarn build

Details

• CodeceptJS version: 2.3.6
• NodeJS Version: v10.15.3
• Operating System: OSX10.15.1
• Configuration file:

exports.config = {
  tests: './tests/*.js',
  output: './output',
  helpers: {
    Puppeteer: {
      url: 'http://localhost:8080',
      show: true
    }
  },
  include: {
    I: './steps_file.js'
  },
  bootstrap: null,
  mocha: {},
  name: 'bootstrap-typescript-starter'
}

[oceandrama]

There is not even about different package.json. @types/... should not be in dependencies section, it’s used only to builing package, not in runtime So, it’s definitely a bug

[Vorobeyko]

I open this issue because if the tests are in different folders (next to the component as an example) the package.json won’t help.