A quick guide on how to track session cost with a Claude hook. This will both keep a running cost counter below your Claude CLI and persist session costs to ~/.claude/cost/.

Add the following to your ~/.bashrc or ~/.zshrc:

alias ghpr='git push && gh pr create --fill'

Now just run ghpr after you've committed, and now you have a PR!

(for security purposes)

• Globally:
  • run npm config set ignore-scripts true
  • this will populate ~/.npmrc
• Per repo:
  • create ./.npmrc
  • add ignore-scripts=true into that file

How to setup a Linux VM for an AI CLI to go crazy in (without risk to your host system).

I thought this would be easy (because it's easy to stream from a backend to a frontend and vice versa) but it was not. Let's look at how to stream a file from an S3 connection on a server to another server in Node.js.

I recently had to figure out client-side mTLS certificates. I've never had to deal with them before, and it was quite annoying, so I documented what I learned.

Npm has recently been making a lot of changes around package publish security because of recent supply-chain attacks targeting Npm.

What does this mean for the lonely dev self-publishing packages from their local CLI?

A quick guide on setting up a minimal but secure HTTPS web server on a Debian (12) Linux server.

To create and authorize a new SSH:

1. Run ssh-keygen -t ed25519 on the client machine.
2. Enter an absolute path to your .ssh folder and the name of the id (id_*).
3. Enter a new passphrase twice.
4. Upload the *.pub file to whatever service the SSH key is for, or add it to ~/.ssh/authorized_keys on the host machine.
5. Add the following to the client machine's ~/.ssh/config file (for macOS at least). Be sure to fill in the <fill-me> parts

   Host <choose-a-name>
       HostName <ip-or-domain-here>
       User <username>
       AddKeysToAgent yes
       UseKeychain yes
       IdentitiesOnly yes
       IdentityFile ~/.ssh/<your-non-pub-id-file-name>
   
6. Connect with ssh choose-a-name (use the name you entered next to Host in the config file).

For cleaner tsc (TypeScript compiler) output: pipe its output into my package tidy-tsc:

npm i -g tidy-tsc

npx tsc | tidyt
npx tsc -b | tidyt # etc.

# in one of my packages
npm run compile | tidyt

| tidyt cleans up the tsc output so instead of seeing tons of logs for every single file's errors like this:

src/file.ts:9:18 - error TS2304: Cannot find name 'missingValue'.
9 const value = missingValue;
                ~~~~~~~~~~~~
src/file.ts:18:15 - error TS7006: Parameter 'char' implicitly has an 'any' type.
18         .map((char, index) => (index % 2 ? char.toUpperCase() : char.toLowerCase()))
                 ~~~~
src/file.ts:18:21 - error TS7006: Parameter 'index' implicitly has an 'any' type.
18         .map((char, index) => (index % 2 ? char.toUpperCase() : char.toLowerCase()))
                       ~~~~~
Found 3 errors.

All you see is this:

Failed files (1):

src/file.ts