"fetch" api included in NodeJS v18 brokes sql.js

NodeJS 18 includes experiential support for the "fetch" api. This is causing sql.js not to work properly after Node v18. Because it checks if there is an global "fetch" funcion exists. If so it tries to fetch the wasm file.

sql-wasm.js
.... "function"!=typeof fetch?c(b):fetch(P,{credentials:"same-origin"}) .....

This check is invalid for NodeJS v18.

Start by inspecting sql-wasm.js, especially the fetch check shown in the issue, and compare its behavior under NodeJS 18. Determine how the NodeJS environment should load the wasm file when a global fetch function exists. Done means sql.js works correctly in NodeJS 18 without incorrectly trying to fetch the wasm file.