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Compiler options not working as expected when using project references #766

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#1541
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Compiler options not working as expected when using project references#766
#1541
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🐛 Bug
@OliverJAsh

Description

@OliverJAsh
OliverJAsh
opened on Sep 26, 2018

Issue :

Full reproduction case

Expected behavior :

I have three TS projects:

  • tsconfig-src.json
  • tsconfig-tests.json
  • tsconfig.json which references both of the above (using TypeScript's new "project references" feature)

When running jest, it should read compiler options from tsconfig.json.

Because tsconfig.json includes no files for itself but just references other projects, ts-jest should read its compiler options from the project reference that corresponds to any given file.

For example, tsconfig.json references the tsconfig-tests.json project:

{
  "references": [
    {
      "path": "./tsconfig-tests.json"
    }
  ]
}

In turn, tsconfig-tests.json includes all test files:

{
  "include": ["**/__tests__/**/*"]
}

Given this example, I expect any test file matching the tests TS project (tsconfig-tests.json, which includes **/__tests__/**/*) to use compiler options for that TS project.

Actual behaviour

Looking at the logs, I can see tsconfig.json is used. However, compilerOptions is read from tsconfig.json, not tsconfig-tests.json.

I have verified this:

  • When I add compiler options to tsconfig.json, ts-jest uses them.
  • When I add compiler options to tsconfig-tests.json, ts-jest does not use them.

Debug log:

log file content 
# content of ts-jest.log :
{"context":{"allowJs":false,"logLevel":20,"namespace":"jest-preset","package":"ts-jest","version":"23.10.1"},"message":"creating jest presets not handling JavaScript files","sequence":1,"time":"2018-09-26T16:17:30.904Z"}
{"context":{"logLevel":20,"namespace":"Importer","package":"ts-jest","version":"23.10.1"},"message":"creating Importer singleton","sequence":2,"time":"2018-09-26T16:17:32.262Z"}
{"context":{"allowJs":false,"logLevel":20,"namespace":"jest-preset","package":"ts-jest","version":"23.10.1"},"message":"creating jest presets not handling JavaScript files","sequence":3,"time":"2018-09-26T16:17:32.268Z"}
{"context":{"actualVersion":"23.6.0","expectedVersion":">=22 <24","logLevel":20,"namespace":"versions","package":"ts-jest","version":"23.10.1"},"message":"checking version of jest: OK","sequence":4,"time":"2018-09-26T16:17:32.271Z"}
{"context":{"baseOptions":{},"logLevel":20,"namespace":"jest-transformer","package":"ts-jest","transformerId":1,"version":"23.10.1"},"message":"created new transformer","sequence":5,"time":"2018-09-26T16:17:32.271Z"}
{"context":{"fileName":"/Users/OliverJAsh/Development/temp/jest-ts-project-references/src/__tests__/add.ts","logLevel":20,"namespace":"jest-transformer","package":"ts-jest","transformOptions":{"instrument":false,"rootDir":"/Users/OliverJAsh/Development/temp/jest-ts-project-references"},"transformerId":1,"version":"23.10.1"},"message":"computing cache key for /Users/OliverJAsh/Development/temp/jest-ts-project-references/src/__tests__/add.ts","sequence":6,"time":"2018-09-26T16:17:32.274Z"}
{"context":{"logLevel":30,"namespace":"jest-transformer","package":"ts-jest","transformerId":1,"version":"23.10.1"},"message":"no matching config-set found, creating a new one","sequence":7,"time":"2018-09-26T16:17:32.275Z"}
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{"context":{"logLevel":20,"namespace":"config","package":"ts-jest","transformerId":1,"tsJestConfig":{"compiler":"typescript","diagnostics":{"ignoreCodes":[6059,18002,18003],"pretty":true,"throws":true},"isolatedModules":false,"transformers":[],"tsConfig":{"kind":"file"}},"version":"23.10.1"},"message":"normalized ts-jest config","sequence":10,"time":"2018-09-26T16:17:32.276Z"}
{"context":{"logLevel":20,"namespace":"config","package":"ts-jest","transformerId":1,"version":"23.10.1"},"message":"babel is disabled","sequence":11,"time":"2018-09-26T16:17:32.277Z"}
{"context":{"logLevel":20,"namespace":"Importer","package":"ts-jest","version":"23.10.1"},"message":"loaded module typescript","sequence":12,"time":"2018-09-26T16:17:32.574Z"}
{"context":{"logLevel":20,"namespace":"Importer","package":"ts-jest","version":"23.10.1"},"message":"patching typescript","sequence":13,"time":"2018-09-26T16:17:32.574Z"}
{"context":{"actualVersion":"3.0.3","expectedVersion":">=2.7 <4","logLevel":20,"namespace":"versions","package":"ts-jest","version":"23.10.1"},"message":"checking version of typescript: OK","sequence":14,"time":"2018-09-26T16:17:32.575Z"}
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{"context":{"diagnosticCodes":[1192],"diagnosticText":"\u001b[96msrc/add.ts\u001b[0m:\u001b[93m1\u001b[0m:\u001b[93m8\u001b[0m - \u001b[91merror\u001b[0m\u001b[90m TS1192: \u001b[0mModule '\"/Users/OliverJAsh/Development/temp/jest-ts-project-references/node_modules/@types/lodash/add\"' has no default export.\n\n\u001b[30;47m1\u001b[0m import add from 'lodash/add';\n\u001b[30;47m \u001b[0m \u001b[91m       ~~~\u001b[0m\n","logLevel":20,"namespace":"TSError","package":"ts-jest","version":"23.10.1"},"message":"created new TSError","sequence":59,"time":"2018-09-26T16:17:33.537Z"}

Minimal repo :

Full reproduction case

In the full reproduction case I have created, you will see that running tsc -b -f tsconfig.json has no problems, but running jest fails with:

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

    TypeScript diagnostics (customize using `[jest-config].globals.ts-jest.diagnostics` option):
    src/add.ts:1:8 - error TS1192: Module '"/Users/OliverJAsh/Development/temp/jest-ts-project-references/node_modules/@types/lodash/add"' has no default export.

    1 import add from 'lodash/add';
             ~~~

This failure suggests that the allowSyntheticDefaultImports compiler option, used in tsconfig-tests.json, is not picked up.

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