combine-coverage.js

/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 ~ Copyright 2020 Adobe Systems Incorporated
 ~
 ~ Licensed under the Apache License, Version 2.0 (the "License");
 ~ you may not use this file except in compliance with the License.
 ~ You may obtain a copy of the License at
 ~
 ~     http://www.apache.org/licenses/LICENSE-2.0
 ~
 ~ Unless required by applicable law or agreed to in writing, software
 ~ distributed under the License is distributed on an "AS IS" BASIS,
 ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ~ See the License for the specific language governing permissions and
 ~ limitations under the License.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/


const createReporter = require('istanbul-api').createReporter;
const istanbulCoverage = require('istanbul-lib-coverage');
const coverage = require('./coverage/coverage-final.json');

const map = istanbulCoverage.createCoverageMap();
Object.keys(coverage).forEach(filename => map.addFileCoverage(coverage[filename]));

const reporter = createReporter();
reporter.addAll(['html', 'lcovonly', 'text-summary']);
reporter.write(map);