Add link to upgrading to Gulp 4 article

[mikestreety]

No description provided.

[phated]

Corrections on the article:

1. Don't install gulpjs/gulp-cli#4.0 - just install the latest gulp-cli from npm (the 4.0 branch will be removed soon)
2. The gulp-cli version should be 1.2.1 when gulp -v is run
3. npm knows how to handle packages that look like npm install gulpjs/gulp#4.0 so you don't need the git+https, etc.
4. package.json misspelled
5. Returning a stream, promise, event emitter, child process or observable is supported, not just stream. The callback is supported incase you can't return any of those.
6. Don't execute del sync, it returns a promise, so just return that statement. return del([])

If you make those changes, I'll merge this. Thanks.

[mikestreety]

Wow, thanks for the suggestions 😄 will update and let you know!

[mikestreety]

Hi @phated - i've updated the blog post with your changes. Thanks for the feedback - much appreciated!

[phated]

@mikestreety sorry about not being clear about the gulp-cli module. It is actually published on npm (https://www.npmjs.com/package/gulp-cli) so you can just install it with npm install -g gulp-cli - no need to fetch it from github

[mikestreety]

Ah yes, got you. Updated thanks!

[phated]

Excellent! Thanks!

[zyf0330]

Hello!
I have done everything, including gulp-cli@latest and gulp@3.9.1, but I get an error showing "gulp.parallel is not a function". What else do I need to do?

[mikestreety]

Hi @zyf0330

Can you cd to your project and run gulp -v - are you getting the correct versions?

Also, would you mind sending your gulpfile?

[zyf0330]

Thank you! @mikestreety
gulp -v show

CLI version 1.2.1
Local version 3.9.1

This is my gulpfile, I delete some code and these code will cause the same result.

var fs = require('fs');
var _path = require('path');
var gulp = require('gulp')
var newer = require('gulp-newer');
var modify = require('gulp-modify');
var uglify = require('gulp-uglify')
var cleanCSS = require('gulp-clean-css');
var htmlmin = require('gulp-htmlmin');
var imagemin  = require('gulp-imagemin');

gulp.task('default', gulp.parallel(function () {
    console.log('finish')
}))

[callumacrae]

Please can you take this to the comments of the article or to Stack Overflow? This isn't really the place for support.

Thanks! 🎉

[mikestreety]

Sorry Callum!