Unable to require `.d.ts` file on Unix only

Issue :

Similar but not the same as #950.

Running tests on my TypeScript project, including a TypeScript dependency, succeeds on Windows. It fails on Linux and OSX with the following:

 FAIL  src/__tests__/storyshots.test.ts
  ● Test suite failed to run

    TypeError: Unable to require `.d.ts` file.
    This is usually the result of a faulty configuration or import. Make sure there is a `.js`, `.json` or another executable extension available alongside `Fields.ts`.

      at getOutput (../node_modules/ts-jest/dist/compiler.js:163:23)
      at Object.compile (../node_modules/ts-jest/dist/compiler.js:185:29)
      at TsJestTransformer.process (../node_modules/ts-jest/dist/ts-jest-transformer.js:101:41)
      at Object.<anonymous> (../node_modules/@adm/webpart-library/src/Types.ts:1:1)

Fields.ts contains:

• An interface
• A type
• A function

All of which are exported.

Here is my jest.config.json:

{
  "preset": "@voitanos/jest-preset-spfx-react16",
  "rootDir": "../src",
  "reporters": ["default", "jest-junit"],
  "coverageReporters": ["cobertura", "html"],
  "collectCoverageFrom": ["**/*.{js,jsx,ts,tsx}", "!**/node_modules/**"],
  "moduleNameMapper": {
    "\\.(css|scss)$": "identity-obj-proxy",
    "^resx-strings/en-us.json": "<rootDir>/node_modules/@microsoft/sp-core-library/lib/resx-strings/en-us.json",
    "^office-ui-fabric-react/lib/(.*)$": "office-ui-fabric-react/lib-commonjs/$1",
    "^@adm/(.*)/lib/(.*)$": "@adm/$1/src/$2",
    "^@adm\/([^\/]*)$": "@adm/$1/src",
    "telemetry": "identity-obj-proxy",
    "PeopleSearchService": "identity-obj-proxy"
  },
  "transformIgnorePatterns": [
    "node_modules/(?!@adm/)"
  ]
}

(Link to preset)

Expected behavior :

The test succeeds regardless of operating system.

Debug log:

ts-jest.log

Minimal repo :

Very sorry but I do not have time to set one of these up right now. I will try and find the time to get a repo set up as soon as I can.

I am using TS 3.5, NodeJS 8.10.0/10.16.x (tried both), Jest 24.9 and ts-jest 24.0.2.

[ahnpnl]

PR #1385 solved something related and it was merged into master. However we are not sure that it will solve this issue. Can anyone please test the latest changes on master against this issue ?

[ahnpnl]

tsconfig.json/compilerOptions.preserveSymlinks fixed for me (I use Mac). Need some helps from community to investigate the solution.