empty coverage on v14

[bjornstar]

Link to bug demonstration repository

https://github.com/bjornstar/tslint/tree/update-nyc-again

npm i
npm run coverage

Expected Behavior

Report coverage correctly.

With nyc@v13 we get:

=============================== Coverage summary ===============================
Statements   : 37.08% ( 4245/11449 )
Branches     : 24.12% ( 1646/6823 )
Functions    : 33.96% ( 868/2556 )
Lines        : 36.78% ( 3756/10212 )
================================================================================

Observed Behavior

=============================== Coverage summary ===============================
Statements   : Unknown% ( 0/0 )
Branches     : Unknown% ( 0/0 )
Functions    : Unknown% ( 0/0 )
Lines        : Unknown% ( 0/0 )
================================================================================

Troubleshooting steps

• still occurrring when I put cache: false in my nyc config

Environment Information

  System:
    OS: macOS 10.14.3
    CPU: (8) x64 Intel(R) Core(TM) i5-8259U CPU @ 2.30GHz
    Memory: 422.64 MB / 16.00 GB
  Binaries:
    Node: 10.15.3 - ~/.nvm/versions/node/v10.15.3/bin/node
    npm: 6.4.1 - ~/.nvm/versions/node/v10.15.3/bin/npm
  npmPackages:
    @babel/code-frame: ^7.0.0 => 7.0.0 
    @types/babel__code-frame: ^7.0.1 => 7.0.1 
    nyc: ^14.1.1 => 14.1.1 
    ts-node: ^3.3.0 => 3.3.0 
    typescript: ~3.4.0 => 3.4.5 

.nycrc:

{
    "include": [
        "build/**/*.js"
    ],
    "extension": [
        ".js"
    ],
    "exclude": [
        "build/test"
    ],
    "reporter": [
        "text-summary",
        "html"
    ],
    "sourceMap": true,
    "all": true
}

[coreyfarrell]

nyc@14 requires that include/exclude/extension settings allow the original source locations. I suspect the following .nycrc will fix your coverage:

{
    "include": [
        "build/**/*.js",
        "src/**/*.ts"
    ],
    "extension": [
        ".js",
        ".ts"
    ],
    "exclude": [
        "**/test"
    ],
    "reporter": [
        "text-summary",
        "html"
    ],
    "sourceMap": true,
    "all": true
}

[bjornstar]

Thanks a bunch! I'm not sure why I couldn't get it to work when I first tried on v14.0.0

=============================== Coverage summary ===============================
Statements   : 46.31% ( 5007/10812 )
Branches     : 39.94% ( 2664/6670 )
Functions    : 45.46% ( 881/1938 )
Lines        : 46.22% ( 4445/9617 )
================================================================================

[coreyfarrell]

14.0.0 had a bug that caused havoc when all: true was combined with source-maps.