Install v8-debug

To understand JavaScript deeply you eventually dive into V8. The v8-debug shell helps inspect bytecode, optimizations, etc. Here’s how I install it.

Installation

Some suggest brew install v8, but that build lacked --print-ast for me, so I don’t recommend it.

1. npm install -g jsvu
2. Run jsvu and select V8 debug. Re-running jsvu updates the installed V8 versions.
3. Add to .bashrc/.zshrc:

   export PATH="$HOME/.jsvu:$PATH"
   alias d8='v8-debug'
   

   The alias makes launching the shell easier.