gulpfile.js

'use strict';
const path = require('path');
const gulp = require('gulp');
const mocha = require('gulp-mocha');
const istanbul = require('gulp-istanbul');
const nsp = require('gulp-nsp');
const plumber = require('gulp-plumber');
const coveralls = require('gulp-coveralls');

gulp.task('nsp', cb => {
  nsp({package: path.resolve('package.json')}, cb);
});

gulp.task('pre-test', () =>
  gulp.src('lib/**/*.js')
    .pipe(istanbul({
      includeUntested: true
    }))
    .pipe(istanbul.hookRequire())
);

gulp.task('test', ['pre-test'], () =>
  gulp.src('test/*.js')
    .pipe(plumber())
    .pipe(mocha({
      reporter: 'spec'
    }))
    .pipe(istanbul.writeReports())
);

gulp.task('coveralls', ['test'], () => {
  if (!process.env.CI) {
    return;
  }

  return gulp.src(path.join(__dirname, 'coverage/lcov.info'))
    .pipe(coveralls());
});

gulp.task('prepublish', ['nsp']);
gulp.task('default', ['test', 'coveralls']);