CodeceptJS 4.x - Logs and stack traces refer to nonexistent files

🚩 [4.0.1-beta.23]

In case of errors, the logs are confusing as it refers to nonexistent with extension temp.mjs.
I understand it may come from the transpilation, but unfortunately, it decreases the developer experience and the navigation in the IDE.

Logs on failure:

Navigation in the IDE clicking on a file path:

Stack trace (in case of exception not handled):

How to reproduce:

Clone: git clone git@github.com:nlespiaucq/examples-ts.git
Checkout the 4.x branch: git checkout 4.x-logs-on-failure
Install everything

cd codeceptjs-examples-ts
npm install
npx playwright install

Run the failed test: npx codeceptjs run

@nlespiaucq

fixed by CodeceptJS v4.0.1-beta.33, please help check if that works for you @nlespiaucq . Thanks!

Sorry, but it still have exactly the same stack trace, referring to nonexistent files - the extension of the files is still .temp.mjs

CodeceptJS v4.0.2-beta.19 #StandWithUkraine
Using test root "/Users/n.lespiaucq/Documents/xxx/examples-ts"

Create Todos with BDD --
  ✖ Create a single todo item @bdd in 3070ms

-- FAILURES:

  1) Create Todos with BDD
       Create a single todo item @bdd:
     expected expected number of visible elements (.todo-list li) is 0, but found 1 "1" to equal "0"


  ◯ File: file:///Users/n.lespiaucq/Documents/xxx/examples-ts/todomvc-tests/features/create-todos.feature
  
  ◯ Scenario Steps:
  ✖ I.seeNumberOfVisibleElements(".todo-list li", ) at Object.seeNumberOfTodos (file://./todomvc-tests/pages/todos.page.temp.mjs:80:11)
  ✔ I.wait(2) at Object.enterTodo (file://./todomvc-tests/pages/todos.page.temp.mjs:26:11)
  ✔ I.pressKey("Enter") at Object.enterTodo (file://./todomvc-tests/pages/todos.page.temp.mjs:25:11)
  ✔ I.fillField(".new-todo", "123456") at Object.enterTodo (file://./todomvc-tests/pages/todos.page.temp.mjs:24:11)
  ✔ I.waitForVisible(".new-todo") at Object.goto (file://./todomvc-tests/pages/todos.page.temp.mjs:21:11)
  ✔ I.executeScript(() => console.error("Boom!")) at Object.goto (file://./todomvc-tests/pages/todos.page.temp.mjs:20:11)
  ✔ I.executeScript(() => sessionStorage.clear()) at Object.goto (file://./todomvc-tests/pages/todos.page.temp.mjs:19:11)
  ✔ I.refreshPage() at Object.goto (file://./todomvc-tests/pages/todos.page.temp.mjs:18:11)
  ✔ I.amOnPage("https://todomvc.com/examples/react/dist/") at Object.goto (file://./todomvc-tests/pages/todos.page.temp.mjs:17:11)

You can check the implementation in the beta release

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CodeceptJS 4.x - Logs and stack traces refer to nonexistent files #5362

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CodeceptJS 4.x - Logs and stack traces refer to nonexistent files #5362

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kobenguyent commented on Jan 7, 2026

nlespiaucq commented on Jan 16, 2026

DenysKuchma commented on Feb 11, 2026

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