gulpfile.js

var gulp = require('gulp'),
  bump = require('gulp-bump'),
  git = require('gulp-git'),
  inject = require('gulp-inject-string'),
  merge = require('merge-stream'),
  tag_version = require('gulp-tag-version'),
  tslint = require('gulp-tslint'),
  typings = require('gulp-typings'),
  shell = require('gulp-shell'),
  exec = require('child_process').exec;

var paths = {
  src_ts: 'src/**/*.ts',
  tests_ts: 'test/**/*.ts',
};

function versionBump(semver) {
  return gulp
    .src(['./package.json', './package-lock.json'])
    .pipe(bump({ type: semver }))
    .pipe(gulp.dest('./'))
    .pipe(git.commit('rev package version'))
    .pipe(tag_version());
}

gulp.task('typings', function() {
  return gulp.src('./typings.json').pipe(typings());
});

gulp.task('typings-vscode-definitions', ['typings'], function() {
  // add vscode definitions
  return gulp.src('./typings/index.d.ts').pipe(gulp.dest('./typings'));
});

gulp.task('tslint', function() {
  var tslintOptions = {
    summarizeFailureOutput: true,
  };

  var srcs = gulp
    .src(paths.src_ts)
    .pipe(tslint({ formatter: 'verbose' }))
    .pipe(tslint.report(tslintOptions));
  var tests = gulp
    .src(paths.tests_ts)
    .pipe(tslint({ formatter: 'verbose' }))
    .pipe(tslint.report(tslintOptions));
  return merge(srcs, tests);
});

gulp.task('prettier', function() {
  runPrettier('git diff --name-only HEAD');
});

gulp.task('forceprettier', function() {
  // files managed by git
  runPrettier('git ls-files');
  // untracked files
  runPrettier('git ls-files --others --exclude-standard');
});

function runPrettier(command) {
  exec(command, function(err, stdout, stderr) {
    const files = stdout.split('\n');
    for (const file of files) {
      if (file.endsWith('.ts') || file.endsWith('.js')) {
        exec(
          `node ./node_modules/prettier/bin/prettier.js --write --print-width 100 --single-quote --trailing-comma es5 ${
            file
          }`
        );
      }
    }
  });
}

gulp.task('default', ['prettier', 'tslint', 'compile']);

gulp.task('compile', shell.task(['npm run vscode:prepublish']));
gulp.task('watch', shell.task(['npm run compile']));
gulp.task('init', ['typings', 'typings-vscode-definitions']);

gulp.task('patch', ['default'], function() {
  return versionBump('patch');
});
gulp.task('minor', ['default'], function() {
  return versionBump('minor');
});
gulp.task('major', ['default'], function() {
  return versionBump('major');
});