How to use the istanbul.Reporter function in istanbul
To help you get started, we’ve selected a few istanbul examples, based on popular ways it is used in public projects.
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sugarcrm / sucrose / test / lib / coverage.js View on Github 
this.reportAll = function() {
let reporter = new istanbul.Reporter();
reporter.addAll(["text"]);
console.log("Cummulative Coverage Report:");
reporter.write(accumulator, sync, function() {
// console.log("Cummulative report generated.");
});
};
};module.exports = function (runner) {
const collector = new instanbul.Collector();
const reporter = new instanbul.Reporter();
new MochaSpecReporter(runner);
runner.on('end', function () {
collector.add(global.__coverage__);
reporter.addAll(['json', 'lcovonly']);
reporter.write(collector, true, function () {
process.stdout.write('report generated');
});
});
};module.exports = function (runner) {
const collector = new instanbul.Collector();
const reporter = new instanbul.Reporter();
reporter.addAll(['lcov', 'json']);
new MochaSpecReporter(runner);
runner.on('end', function () {
collector.add(global.__coverage__);
reporter.write(collector, true, function () {
process.stdout.write('report generated');
});
});
};gulp.task('coverage', function(done) {
var collector = new istanbul.Collector();
var reporter = new istanbul.Reporter(null, './coverage/report');
reporter.addAll(['lcov']);
glob("./coverage/json/**/coverage*.json", {}, function (err, files) {
files.forEach(function (file) {
var coverageObject = JSON.parse(fs.readFileSync(file, 'utf8'));
collector.add(coverageObject);
});
files.forEach(function(f) {
console.log('Adding coverage file '+f);
collector.add(JSON.parse(fs.readFileSync(f, 'utf8')));
});
reporter.write(collector, false, done);
});
});module.exports = function (runner) {
const collector = new instanbul.Collector()
const reporter = new instanbul.Reporter()
reporter.addAll(['lcov', 'json'])
new MochaSpecReporter(runner)
runner.on('end', function () {
collector.add(global.__coverage__)
reporter.write(collector, true, function () {
console.log('report generated')
})
})
}istanbul
Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use cases including unit tests, server side functional tests
