A bash script and an apple script that lets you specify a string and a delay, and then have that string typed out at a uniform speed after the delay.
Good for recording demo videos like this (meta) one.
demo-demo.mp4
git clone git@github.com/ritza-co/typing-automator
cd typing-automator
chmod +x type_demo.sh
./type_demo.sh "type this text" 5
(adjust the last number as needed to give you enough time to switch to the window where you want the text to appear.