jasmineDone(_runDetails: jasmine.RunDetails): void {
    if (global.__coverage__) {
      this._updateCoverageJsonSourceMap(global.__coverage__);
      istanbulCollector.add(global.__coverage__);

      istanbulReporter.write(istanbulCollector, true, () => {});
    }
  }

interface CoverageLocation {
  start: Position;
  end: Position;
}

type CoverageType = any;  // tslint:disable-line:no-any
declare const global: {
  __coverage__: CoverageType;
};


// Add the Istanbul (not Constantinople) reporter.
const istanbulCollector = new Istanbul.Collector({});
const istanbulReporter = new Istanbul.Reporter(undefined, 'coverage/');
istanbulReporter.addAll(['json', 'lcov']);


class IstanbulReporter implements jasmine.CustomReporter {
  // Update a location object from a SourceMap. Will ignore the location if the sourcemap does
  // not have a valid mapping.
  private _updateLocation(consumer: SourceMapConsumer, location: CoverageLocation) {
    const start = consumer.originalPositionFor(location.start);
    const end = consumer.originalPositionFor(location.end);

    // Filter invalid original positions.
    if (start.line !== null && start.column !== null) {
      // Filter unwanted properties.
      location.start = { line: start.line, column: start.column };
    }

import * as istanbul from 'istanbul';

// Instrument code
var instrumenter = new istanbul.Instrumenter();

var generatedCode = instrumenter.instrumentSync('function meaningOfLife() { return 42; }',
    'filename.js');


// Generate reports given a bunch of coverage JSON objects
var collector = new istanbul.Collector(),
    reporter = new istanbul.Reporter(),
    sync = false;

var obj1 = {},
    obj2 = {};

collector.add(obj1);
collector.add(obj2); //etc.

reporter.add('text');
reporter.addAll([ 'lcov', 'clover' ]);
reporter.write(collector, sync, function () {
    console.log('All reports generated');
});