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nyc merge in nyc@next gives 'Invalid file coverage object, missing keys, found:data'

See original GitHub issue

Link to bug demonstration repository

git clone https://github.com/akoidan/vue-webpack-typescript
git checkout multicov
yarn install
yarn test

Expected Behavior

tests are merged, no errors

Observed Behavior

commands in example will run multiple test and then tries to run nyc merge that would fail with error: 'Invalid file coverage object, missing keys, found:data' To be specific

yarn run test:unit
yarn nyc merge ./nyc/.nyc_output_unit/ ./nyc/.nyc_output/unit.json

results a json like this:

{
  "/home/andrew/WebstormProjects/vue-webpack-typescript/src/utils/classComponentHooks.ts": {
    "data": {
      "path": "/home/andrew/WebstormProjects/vue-webpack-typescript/src/utils/classComponentHooks.ts",
      "statementMap": {
        "0": {
          "start": {
            "line": 4,
            "column": 0
          },
          "end": {
            "line": 8,
            "column": 3
          }
        }
      },
      "fnMap": {},
      "branchMap": {},
      "s": {
        "0": 0
      },
      "f": {},
      "b": {},
      "all": true
    }
  }
}

Environment Information

npx: installed 1 in 0.76s

  System:
    OS: Linux 5.3 Arch Linux undefined
    CPU: (8) x64 Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz
    Memory: 5.92 GB / 31.25 GB
  Binaries:
    Node: 12.13.0 - /usr/bin/node
    Yarn: 1.19.1 - /usr/bin/yarn
    npm: 6.12.1 - /usr/bin/npm
  npmPackages:
    @babel/plugin-proposal-class-properties: 7.7.0 => 7.7.0 
    @babel/plugin-proposal-decorators: 7.7.0 => 7.7.0 
    @babel/preset-env: 7.7.1 => 7.7.1 
    babel-loader: 8.0.6 => 8.0.6 
    babel-plugin-istanbul: 5.2.0 => 5.2.0 
    babel-preset-typescript-vue: 1.0.2 => 1.0.2 
    istanbul-lib-coverage: 2.0.5 => 2.0.5 
    nyc: ^15.0.0-beta.0 => 15.0.0-beta.0 
    source-map-support: 0.5.16 => 0.5.16 
    ts-node: 8.5.2 => 8.5.2 
    typescript: 3.7.2 => 3.7.2

Issue Analytics

State:
Created 4 years ago
Comments:9 (3 by maintainers)

Top GitHub Comments

1reaction

Maximus1285commented, Oct 27, 2020

I’m running into this issue as well.

1reaction

coreyfarrellcommented, Nov 26, 2019

@akoidan I’m very busy so I have to ask for your patience.

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