Testing with Babel-Jest #4

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1. DanielRosenwasser commented on Mar 7, 2018

   

   Daniel Rosenwasser (DanielRosenwasser)

   on Mar 7, 2018

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   Hey James Hegedus (@jthegedus), thanks for the kudos 😃. Recently I've not been able to run through that scenario. I may try it out in the future, and if it is relatively simple to explain, we may consider adding it to the starter/walkthrough.

   We're also open to taking PRs, or if you or someone else have a set of steps, we could adapt that to the starter.
2. jthegedus commented on Mar 7, 2018

   

   James Hegedus (jthegedus)

   on Mar 7, 2018

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   I've been trying. If I get something to work I will certainly PR it for discussion here 👍
3. DanielRosenwasser commented on Mar 7, 2018

   

   Daniel Rosenwasser (DanielRosenwasser)

   on Mar 7, 2018

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   Just found this btw https://github.com/damassi/babel-7-typescript-example
4. jthegedus commented on Mar 7, 2018

   

   James Hegedus (jthegedus)

   on Mar 7, 2018

   Last edited by jthegedus

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   Ooh, thanks, that covers almost everything I was after I was after.

   Feel free to close this unless you would still like to cover that scenario in this code.
5. jy95 commented on Apr 10, 2018

   

   Jacques Yakoub (jy95)

   on Apr 10, 2018

   Last edited by jy95

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   In my case, Jest/ts-Jest doesn't seem to like my declaration only introduced by TypeScript 2.8 (demo repo : https://github.com/jy95/mediaScan/tree/prettier )

   Logs : https://travis-ci.org/jy95/mediaScan/jobs/364394183#L529

   Debug Failure. False expression: Output generation failed
         
         at Object.transpileModule (node_modules/typescript/lib/typescript.js:93386:18)
         at process (node_modules/ts-jest/dist/preprocessor.js:27:28)
         at Object.process (node_modules/ts-jest/index.js:8:51)
   

   tsconfig.json :

   {
     "compilerOptions": {
       "allowSyntheticDefaultImports": true,
       "module": "commonjs",
       "target": "es5",
       "lib": ["ES6","ES2017","ESNext"],
       "downlevelIteration": true,
       "moduleResolution": "node",
       "declaration": true,
       "emitDeclarationOnly": true,
       "declarationDir": "./lib"
     },
     "exclude": [
       "node_modules"
     ],
     "include": [
       "src/**/*"
     ],
     "strict": true
   }
   

   jest.config.js :

   // jest.config.js
   module.exports = {
       verbose: true,
       "moduleFileExtensions": [
           "ts",
           "tsx",
           "js"
       ],
       "transform": {
           "^.+\\.tsx?$": "ts-jest"
       },
       "testMatch": [
           "<rootDir>/__tests__/**/*.(ts|tsx|js)"
       ],
       "testPathIgnorePatterns": ["<rootDir>/node_modules/", "<rootDir>/__tests__/__helpers__/"],
       "collectCoverage": true
   };
   

   It seems these guys eat some .d.ts when they are doing the moduleFileExtensions search...