gulpfile.js

var gulp = require('gulp'),
    tslint = require('gulp-tslint'),
    exec = require('child_process').exec,
    jasmine = require('gulp-jasmine'),
    gulp = require('gulp-help')(gulp),
    tsconfig = require('gulp-tsconfig-files'),
    path = require('path'),
    inject = require('gulp-inject'),
    gulpSequence = require('gulp-sequence'),
    del = require('del');

gulp.task('clean', 'Cleans the generated js files from lib directory', function() {
    return del([
        'lib/**/*'
    ]);
});

gulp.task('tslint', 'Lints all TypeScript source files', function() {
    return gulp.src(tsFilesGlob)
        .pipe(tslint())
        .pipe(tslint.report('verbose'));
});

gulp.task('_build', 'INTERNAL TASK - Compiles all TypeScript source files', function(cb) {
    exec('tsc', function(err, stdout, stderr) {
        console.log(stdout);
        console.log(stderr);
        cb(err);
    });
});

//run tslint task, then run _tsconfig_files and _gen_tsrefs in parallel, then run _build
gulp.task('build', 'Compiles all TypeScript source files and updates module references', gulpSequence('tslint', ['tsconfig_files', 'gen_tsrefs'], '_build'));

gulp.task('test', 'Runs the test specs', function() {
    return gulp.src('lib/spec/**/*.js')
        .pipe(jasmine({
            errorOnFail: false,
            showColors: true,
            includeStackTrace: false,
            verbose: false
        }));
});

gulp.task('run', 'Runs node', function(cb) {
    exec('node lib/index.js', function(err, stdout, stderr) {
        console.log(stdout);
        console.log(stderr);
        cb(err);
    });
});

var watchOptions = {
    interval: 750, // default 100
    debounceDelay: 1000, // default 500
    mode: 'watch'
};
gulp.task('watch', 'Watches the test files for changes', function() {
    gulp.watch('lib/**/*.js', watchOptions, ['test']);
});

gulp.task('default', 'Default tasks runs the tests on change', ['test', 'watch']);