You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.1 KiB
Markdown
87 lines
2.1 KiB
Markdown
12 months ago
|
# v8-to-istanbul
|
||
|
|
|
||
|
|
[](https://travis-ci.org/istanbuljs/v8-to-istanbul)
|
||
|
|
[](https://conventionalcommits.org)
|
||
|
|
|
||
|
|
|
||
|
|
converts from v8 coverage format to [istanbul's coverage format](https://github.com/gotwarlost/istanbul/blob/master/coverage.json.md).
|
||
|
|
|
||
|
|
## Usage
|
||
|
|
|
||
|
|
```js
|
||
|
|
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
|
||
|
|
|
||
|
|
```js
|
||
|
|
const myVariable = 99
|
||
|
|
/* c8 ignore next */
|
||
|
|
if (process.platform === 'win32') console.info('hello world')
|
||
|
|
```
|
||
|
|
|
||
|
|
### ignoring the next N lines
|
||
|
|
|
||
|
|
```js
|
||
|
|
const myVariable = 99
|
||
|
|
/* c8 ignore next 3 */
|
||
|
|
if (process.platform === 'win32') {
|
||
|
|
console.info('hello world')
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
### ignoring all lines until told
|
||
|
|
|
||
|
|
```js
|
||
|
|
/* c8 ignore start */
|
||
|
|
function dontMindMe() {
|
||
|
|
// ...
|
||
|
|
}
|
||
|
|
/* c8 ignore stop */
|
||
|
|
```
|
||
|
|
|
||
|
|
### ignoring the same line as the comment
|
||
|
|
|
||
|
|
```js
|
||
|
|
const myVariable = 99
|
||
|
|
const os = process.platform === 'darwin' ? 'OSXy' /* c8 ignore next */ : 'Windowsy'
|
||
|
|
```
|
||
|
|
|
||
|
|
## Testing
|
||
|
|
|
||
|
|
To execute tests, simply run:
|
||
|
|
|
||
|
|
```bash
|
||
|
|
npm test
|
||
|
|
```
|