This is a reasonable starting place for the Search.io coding exercise in JavaScript.
You are free to pull in a package or three if you feel the need, but so long as you're running in the latest Chrome/Node you should have access to most modern JavaScript APIs and none of these challenges require any heavy lifting from libraries.
/fe/vanilla — If you're accustomed to JavaScript
/fe/typescript — If you'd prefer to interview in TS.
/fe/vanilla — If you're accustomed to JavaScript
/fe/typescript — If you'd prefer to interview in TS.