Parse LCOV file and return total line, branch, and function coverage as well as coverages for specified source files.
import totalCoverage from 'total-coverage';
const {
totalLineCov,
totalBranchCov,
totalFunctionCov
} = totalCoverage('path/to/lcov.info');
const sourceFilesToGetCoverageFor = [
'apps/api/src/a.ts',
'apps/api/src/b.ts',
'apps/api/src/c.ts',
];
const {
totalLineCov,
totalBranchCov,
totalFunctionCov,
files,
} = totalCoverage('path/to/lcov.info', source
7EC9
FilesToGetCoverageFor);
// files property is not present if no concrete source files were passed
// or no such source files were found in the lcov file
//
// {
// "totalLineCov": 60.8,
// "totalBranchCov": 51.1,
// "totalFunctionCov": 60.4,
// "files": {
// "apps/api/src/c.ts": {
// "totalLineCov": 85.7,
// "totalBranchCov": 59.7,
// "totalFunctionCov": 70
// },
// "apps/api/src/b.ts": {
// "totalLineCov": 31.9,
// "totalBranchCov": 28.4,
// "totalFunctionCov": 38.5
// },
// "apps/api/src/a.ts": {
// "totalLineCov": 67.5,
// "totalBranchCov": 59.4,
// "totalFunctionCov": 68
// }
// }
// }Or as a command line tool:
# global install
$ npm install --global total-coverage
$ total-coverage lcov.info
{"totalLineCov":61.3,"totalBranchCov":51.2,"totalFunctionCov":55.1}
# ask for coverage for concrete source files
$ total-coverage lcov.info apps/api/src/a.ts apps/api/src/b.ts | jq
{
"totalLineCov": 60.8,
"totalBranchCov": 51.1,
"totalFunctionCov": 60.4,
"files": {
"apps/api/src/b.ts": {
"totalLineCov": 31.9,
"totalBranchCov": 28.4,
"totalFunctionCov": 38.5
},
"apps/api/src/a.ts": {
"totalLineCov": 67.5,
"totalBranchCov": 59.4,
"totalFunctionCov": 68
}
}
}
# or install the package only locally
$ npm install total-coverage
$ npx total-coverage lcov.info
{"totalLineCov":61.3,"totalBranchCov":51.2,"totalFunctionCov":55.1}Initial project install:
nvm use
make installAfter changes, format, lint, and build the project:
make all