NPM - pre & post scripts

[@Colstonewall]

This type of tutorial (NPM Scripts) is far underutilized. It's something that needs to be taught, and I don't think I've seen anyone else do a vid on it. Thanks Steve.

[@SteveGriffith-Prof3ssorSt3v3]

I've got a bunch more NodeJS and NPM videos coming in the near future.

[@rotrose7531]

Thank you for explaining these wonderful and useful details. You are the best teacher because you know what a student does not know.

[@mmesba]

Your contents are always valuable

[@tengun]

Great video as always. Thank you!

[@fibrecompany5093]

love your work man

[@yairvolloch1556]

Is there a way to define a pre script for several scripts? Meaning it'll run before scripts A, B, C...

[@SteveGriffith-Prof3ssorSt3v3]

Any script can have a pre and a post script. Each script can have any number of commands, including calling other scripts.

[@questreal5812]

what would be the difference between doing it this way and using "&&" instead? For example, wouldn't "touch .gitignore && echo \"\" > .gitignore && echo \".gitignore .vscode/ node_modules/\" >> .gitignore" achieve the same thing?

[@SteveGriffith-Prof3ssorSt3v3]

yes. But the point is that you can have automated tasks that run before and after any script without always having to explicitly writing them out with the &&. Those scripts could call other scripts or run shell scripts that do lots of things.

[@5ystemNoveary]

Great video, thanks sir. But i got an error: 'touch' is not recognized as an internal or external command, operable program or batch file.

[@SteveGriffith-Prof3ssorSt3v3]

touch is a Mac or Linux command. If you are using Windows then you have to create the file another way. blog.jongallant.com/2016/11/windows-touch-equivalent/

[@kensyjolicoeur]

i'm using windows : echo filecontent > filename.fileextension

[@nikolasashorov9851]

you can use git bash terminal

[@radoslavtsanev6822]

windows command - type nul > .gitignore

[@mrray3695]

check your file directory if you are specifying the correct path

[@MohammedAhmed-zm7qw]

Thank Y❤U

[@kensyjolicoeur]

thank you 1000 times

[@alvinacosta2312]

thanks for this but a ran into a problem. "ignore": "echo \"\" > .gitignore", "preignore": "type nul > .gitignore", "postignore": "echo \"node_modules/ .gitignore .vscode/\" > .gitignore" I am running these scripts but I get an empty string in my gitignore file. Any help is appreciated!

[@stanleychukwu7424]

trying using the >> in the postignore file, then what is the type nul for? maybe you don't need the pre script at all.. or have you fixed it?

[@someoneelse4123]

On windows I get an empty string and it tries to output to console, I have used many different search terms and haven't figured it out.

[@SteveGriffith-Prof3ssorSt3v3]

The problem is likely connected to the touch command, which works on MacOS and Linux but not the Windows command line. This stackoverflow post does a good job talking about how to achieve the same things on windows. stackoverflow.com/questions/30011267/create-an-empty-file-on-the-commandline-in-windows-like-the-linux-touch-command

[@ningzhou8397]

how to fix the following error? npm ERR! Line breaks can't be quoted on Windows

[@SteveGriffith-Prof3ssorSt3v3]

The error message is saying that you can't use line breaks in the quoted commands.

[@ningzhou8397]

@@SteveGriffith-Prof3ssorSt3v3 thanks Steve for your comment, I searched the solution but cannot find any yet, by the way, great videos!

[@juhandvan]

thank you so much

[@coffeymay6775]

What is the benefit of creating files this way?

[@SteveGriffith-Prof3ssorSt3v3]

Creating files was just a placeholder activity. You can do whatever you want in the pre and post scripts.

[@heitormr2509]

Cara,isso não funcionou'-'

[@TechWithAchiever]

Thank you so much, Steve, I am learning a ton on these series. Btwn, I run "npm run ignore" it just adds quotes in the file, and not the expected, would you mind helping? see pastebin.com/FB2WMF4v

[@SteveGriffith-Prof3ssorSt3v3]

It is the backslashes that you are adding before the quotes. "echo \"\" >> .gitignore", You are telling it to write "" in the file.

[@TechWithAchiever]

@@SteveGriffith-Prof3ssorSt3v3 Thank you for replying, please see attached its exactly how you did it in the video and it worked for you, i truly hope it will work for me too. ibb.co/PGbRQR6