333
schangxiang@126.com
2025-09-19 18966e02fb573c7e2bb0c6426ed792b38b910940
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
## istanbul-lib-coverage
 
[![Greenkeeper badge](https://badges.greenkeeper.io/istanbuljs/istanbul-lib-coverage.svg)](https://greenkeeper.io/)
[![Build Status](https://travis-ci.org/istanbuljs/istanbul-lib-coverage.svg?branch=master)](https://travis-ci.org/istanbuljs/istanbul-lib-coverage)
 
An API that provides a read-only view of coverage information with the ability
to merge and summarize coverage info.
 
Supersedes `object-utils` and `collector` from the v0 istanbul API.
 
See the docs for the full API.
 
```js
var libCoverage = require('istanbul-lib-coverage');
var map = libCoverage.createCoverageMap(globalCoverageVar);
var summary = libCoverage.createCoverageSummary();
 
// merge another coverage map into the one we created
map.merge(otherCoverageMap);
 
// inspect and summarize all file coverage objects in the map
map.files().forEach(function(f) {
    var fc = map.fileCoverageFor(f),
        s = fc.toSummary();
    summary.merge(s);
});
 
console.log('Global summary', summary);
```