28 November

Override regular class name from css-module file

Relevant SO question

.randomisedModuleClassName {
  > :global(.global-class-name) {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }
  
  ::before {
    display: none;
  }
}

27 November

Class fields proposal – order of fields matters

I have not encountered problems with function class fields in Javascript’s class fields proposal when using babel plugin. But when you try to use property class fields (like state in React), if you use shorthand notation instead of constructor, you have to define methods you are going to call before they are used.

// This won't work properly
state = { f: this.foo() };
foo = () => { return true; };

// But this will
foo = () => { return true; };
state = { f: this.foo() };

22 November

Apply git stash without dropping it

Use git stash apply instead of git stash pop. Pop is like git stash apply && git stash drop.

16 November

Gnome-shell extension development notes

journalctl -f # for logs

const ByteArray = imports.byteArray;

ByteArray.toString(/* output from shell command*/);

gjs docs st

15 November

Process files in batch with ffmpeg

Following snippet converts all .avi files to mp4. ${f%.*} files name without extension.

for f in $(ls *.avi); do ffmpeg -i $f ${f%.*}.mp4; done

6 November

Editing old commit in git history

so

git rebase --interactive <commit-sha>^
# choose with 'edit' commit you want to change
# make changes you would like to amend -- this apparently doesn't push changes to a current
# workspace, so you need to look at the specific commit history
git commit --all --amend --no-edit
git rebase --continue

Stage lines with keyboard shortcut in git-gui

so

sudo gedit /usr/lib/git-core/git-gui

At the end of the file add

bind .   <$M1B-Key-d> stagelines

proc stagelines {} {
    apply_range_or_line %X %Y
    do_rescan
}

Now, restart git gui. Select lines you want to stage and press Ctrl+d. You can change keybind to sole d with <Key-d>.

Test if push candidate builds and works

# stash all files, including untracked
git stash -u
# check if everything is all right
git stash pop
# push and so on...