Sandbox::https://github.com/github-tools/github-release-notes/blob/master/gulpfile.js

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const babel = require('gulp-babel');

const chmod = require('gulp-chmod');

const eslint = require('gulp-eslint');

const gulp = require('gulp');

const gulpIf = require('gulp-if');

gulp.task('scripts', done => {

gulp.src('./lib/src/**/*.js')

.pipe(babel({

presets: ['es2015']

}))

.pipe(gulp.dest('dist'));

gulp.src('./lib/src/**/*.json')

.pipe(gulp.dest('dist'));

gulp.src('./lib/*.js')

.pipe(babel())

.pipe(chmod(0o755))

.pipe(gulp.dest('bin'));

done();

});

gulp.task('lint', () => {

const isFixed = file => file.eslint != null && file.eslint.fixed;

return gulp.src('./lib/**/*.js')

.pipe(

eslint({

fix: true,

envs: [

'node'

]

})

)

.pipe(eslint.format())

.pipe(gulpIf(isFixed, gulp.dest('./lib/')));

});

gulp.task('watch', () => gulp.watch('./lib/**/*.js', gulp.series(['lint', 'scripts'])));

gulp.task('build', gulp.series(['lint', 'scripts']));

gulp.task('default', gulp.series(['build', 'watch']));