Engineering Journal

Description: Journal of engineering tips

Node

• Install latest node version
  • nvm install node
• Use latest node version
  • nvm use node
• List all node versions
  • nvm list
• Link to NVM doc
  • https://github.com/nvm-sh/nvm

Git Commands

• Rename branch
  • git branch -m <new branch name>
• Delete local git repo
  • rm -rf <git repo name>.git
  • rm -rf <git repo name>
• Cancel a git merge
  • git-reset or git merge --abort
• Reset to older commit in remote branch (dangerous if someone has pulled down changes in the commit you're deleting)
  • git reset --hard <commit-hash>
  • git push -f origin <branch-name>
• Discard local uncommitted git changes
  • git reset –hard
  • git clean -fxd
• Undo last local commit while leaving your working tree (the state of your files on disk) untouched
  • git reset HEAD~
• Delete all local branches besides "develop" or "master" etc.
  • windows (powershell): git branch | %{ $.Trim() } | ?{ $ -ne 'master' } | ?{ $_ -ne 'main'} | ?{ $_ -ne 'develop'} | %{ git branch -D $_ }
  • mac (terminal): git branch | grep -v "develop" | grep -v "master" | grep -v "main" | xargs git branch -D
• Rollback to a previous commit and checkout into a branch
  • git checkout < commithash > -b < branchname >
• Commit and get past linting errors such as unused vars
  • git commit -m "Commit Message" --no-verify
• error: cannot lock ref
  • git remote prune origin

NPM

• If you have npm install issues
  • delete package-lock.json file and try npm i again
  • try npm cache clean --force and then try npm i again
  • delete node-modules folder and try npm i again
  • try installing in a different terminal (e.g vscode terminal)
  • restart terminal or restart compouter and try again

Terminal (Unix) Commands

• Basic UNIX Commands
  • https://mally.stanford.edu/~sr/computing/basic-unix.html
• To move a file from your Downloads folder to a Work folder in your Documents folder
  • % mv ~/Downloads/MyFile.txt ~/Documents/Work/MyFile.txt
• Something is already running on port 3000
  • $ lsof -i tcp:3000
  • $ kill -9 PID

VS Code

• Settings editor
  • To open the Settings editor, navigate to Code > Settings > Settings. Alternately, open the Settings editor from the Command Palette (⇧⌘P) with Preferences: Open Settings or use the keyboard shortcut (⌘,).
• Accept all incoming changes
  • Press Ctrl+shift+p (command palette) or go to view and open command palette manually and type "merge" in your command palette, now you can see the Accept all incoming changes.
• Open default settings
  • Press F1, type in "open settings" go to Preferences: Open Default Settings (JSON)
• Find and replace all occurrences of words in all files
  • Press ctrl + shift + h
  • Enter the word you want to replace on top input, and the word you want to replace to on the next input
  • Click the button next to the second input to replace all of the occurrences
• Find and replace all occurrences of words in one file
  • Highlight some text and then press ctrl + shift + l
• Format current file (e.g. with Prettier)
  • alt + shift + f
• Useful Keyboard Shortcuts
  • https://semicolon.dev/tutorial/vscode/keyboard-shortcuts
• Format code on save in VS Code
  • Add the following to your settings.json file:
  • "editor.formatOnSave": true

Browser Debugger

• Which DOM element has focus?
  • In the console type in "document.activeElement"

Variable Name Casing

• Snake Case
  • separates each word with an underscore character
  • number_of_donuts = 34
• Camel Case
  • start by making the first word lowercase. Then, you capitalize the first letter of each word that follows
  • numberOfDonuts = 34
• Kebab Case
  • separates each word with a dash character
  • number-of-donuts = 34
• Pascal Case
  • like camel case but the first letter of the first word is also capitalized
  • NumberOfDonuts = 34