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					30 lines
				
				996 B
			
		
		
			
		
	
	
					30 lines
				
				996 B
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											4 years ago
										 
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								## istanbul-lib-coverage
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								[](https://greenkeeper.io/)
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								[](https://travis-ci.org/istanbuljs/istanbul-lib-coverage)
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								An API that provides a read-only view of coverage information with the ability
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								to merge and summarize coverage info.
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								Supersedes `object-utils` and `collector` from the v0 istanbul API.
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								See the docs for the full API.
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								```js
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								var libCoverage = require('istanbul-lib-coverage');
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								var map = libCoverage.createCoverageMap(globalCoverageVar);
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								var summary = libCoverage.createCoverageSummary();
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								// merge another coverage map into the one we created
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								map.merge(otherCoverageMap);
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								// inspect and summarize all file coverage objects in the map
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								map.files().forEach(function(f) {
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								    var fc = map.fileCoverageFor(f),
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								        s = fc.toSummary();
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								    summary.merge(s);
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								});
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								console.log('Global summary', summary);
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								```
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