gulpfile.js

import gulp from 'gulp'
import gulplog from 'gulplog'
import gulpJsonlint from 'gulp-jsonlint'
import gulpStandard from 'gulp-standard'
import gulpWatch from 'gulp-watch'

const paths = {
  json: [
    '*.json',
    'data/**/*.json',
    'examples/**/*.json',
    'fixtures/**/*.json'
  ],
  scripts: ['*.js', 'examples/**/*.js', 'lib/**/*.js', 'test/**/*.js']
}

export const standard = () =>
  gulp
    .src(paths.scripts)
    .pipe(gulpStandard())
    .pipe(
      gulpStandard.reporter('default', {
        breakOnError: true
      })
    )

export const jsonlint = () =>
  gulp
    .src(paths.json)
    .pipe(gulpJsonlint())
    .pipe(gulpJsonlint.failAfterError())
    .pipe(gulpJsonlint.reporter())

export const watchScripts = () =>
  gulp
    .src(paths.scripts)
    .pipe(
      gulpWatch(paths.scripts, (vinyl) => {
        if (vinyl.event === 'change') {
          gulplog.info(`Linted ${vinyl.relative}`)
        }
      })
    )
    .pipe(gulpStandard())
    .pipe(gulpStandard.reporter('default', {}))

export const watchJson = () =>
  gulp
    .src(paths.json)
    .pipe(
      gulpWatch(paths.json, (vinyl) => {
        if (vinyl.event === 'change') {
          gulplog.info(`Linted ${vinyl.relative}`)
        }
      })
    )
    .pipe(gulpJsonlint())
    .pipe(gulpJsonlint.reporter())

export const lint = gulp.parallel(jsonlint, standard)

export const watch = gulp.parallel(watchJson, watchScripts)

export default gulp.series(lint, watch)