# log names of optimized functions
d8 --trace-opt primes.js

# logs optimizing compiler bailouts
d8 --trace-bailout prmies.js

# log functions that v8 had to deoptimize
d8 --trace-deopt primes.js

# You can also call Chrome with all flags
"/Applications/Google Chrome/MacOs/Google Chrome" --js-flags = "--trace-opt --trace-deopt --trace-bailout"