And AI coding agents often want extensions from npm...

BTW, if running over a large set of directories, the equivalent fd / fd-find / fdfind commands appear to be the following:

fdfind -HI -t f -p '.*\/node_modules\/.*(Math_Symbol\.js|math_init\.js)$' ~

fdfind -HI -t f -p 'node_modules/.*/setup.mjs' ~ -x sh -c "grep -q oven-sh/bun {} && echo SUSPICIOUS: {}"

These only popped up the one (false) positive for me, and they're partially LLM-generated translations, but they might save you a bit of typing. Nothing is wrong with find. These simply seem faster if going though TBs of directories.