swc-project / swc

Rust-based platform for the Web
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When using @swc/jest to transpile ts to commonjs and running jest --coverage certain branches are shown #9053

Closed mikemajesty closed 5 months ago

mikemajesty commented 5 months ago

Describe the bug

When using @swc/jest to transpile ts to commonjs and running jest --coverage certain branches are shown as not covered (console logging in these branches show that tests do run the code path).

image

image

Input code

No response

Config

import { pathsToModuleNameMapper } from 'ts-jest';

import { compilerOptions } from './tsconfig.json';

export default {
  moduleFileExtensions: ['js', 'json', 'ts'],
  rootDir: 'src/core',
  testRegex: '.*\\.spec\\.ts$',
  transform: {
    '^.+\\.(t|j)sx?$': [
      '@swc/jest',
      {
        jsc: {
          target: 'es2022',
        },
        sourceMaps: true,
      },
    ],
  },
  setupFilesAfterEnv: ['../../test/initialization.ts'],
  testEnvironment: 'node',
  collectCoverageFrom: ['**/*.ts'],
  coverageDirectory: '../../coverage',
  coverageReporters: ['json-summary', 'lcov'],
  moduleNameMapper: pathsToModuleNameMapper(compilerOptions.paths, { prefix: '<rootDir>/../../' })
};

Playground link (or link to the minimal reproduction)

none

SWC Info output

No response

Expected behavior

100% coverage

Actual behavior

No response

Version

"@swc/jest": "^0.2.36"

Additional context

No response

github-actions[bot] commented 5 months ago

We could not detect a valid reproduction link. Make sure to follow the bug report template carefully.

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