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v8-to-istanbul

3.2.3 • Public • Published

v8-to-istanbul

Build Status Conventional Commits Coverage Status

converts from v8 coverage format to istanbul's coverage format.

Usage

const v8toIstanbul = require('v8-to-istanbul')
// the path to the original source-file is required, as its contents are
// used during the conversion algorithm.
const converter = v8toIstanbul('./path-to-instrumented-file.js')
await converter.load() // this is required due to the async source-map dependency.
// provide an array of coverage information in v8 format.
converter.applyCoverage([
  {
    "functionName": "",
    "ranges": [
      {
        "startOffset": 0,
        "endOffset": 520,
        "count": 1
      }
    ],
    "isBlockCoverage": true
  },
  // ...
])
// output coverage information in a form that can
// be consumed by Istanbul.
console.info(JSON.stringify(converter.toIstanbul()))

Ignoring Uncovered Lines

Sometimes you might find yourself wanting to ignore uncovered lines in your application (for example, perhaps you run your tests in Linux, but there's code that only executes on Windows).

To ignore lines, use the special comment /* c8 ignore next */.

ignoring the next line

const myVariable = 99
/* c8 ignore next */
if (process.platform === 'win32') console.info('hello world')

ignoring the next N lines

const myVariable = 99
/* c8 ignore next 3 */
if (process.platform === 'win32') {
  console.info('hello world')
}

ignoring the same line as the comment

const myVariable = 99
const os = process.platform === 'darwin' ? 'OSXy' /* c8 ignore next */ : 'Windowsy' 

Testing

To execute tests, simply run:

npm test

install

npm i v8-to-istanbul

Downloadsweekly downloads

16,214

version

3.2.3

license

ISC

homepage

github.com

repository

Gitgithub

last publish

collaborators

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