^{Originally posted byJoshuaKGoldberg November 7, 2022}

Suggestion

We write code like this very frequently:

constparserServices=util.getParserServices(context);constchecker=parserServices.program.getTypeChecker();consttsNode=parserServices.esTreeNodeToTSNodeMap.get(node);consttype=checker.getTypeAtLocation(node);

It's a little burdensome.

@bradzacher and I were chatting in a pairing about how it might be convenient to make a wrapper around this, for convenience. Vague first draft:

declareconsttypeUtils:{[Kinkeyofts.TypeChecker]:(services:ParserServices,node:TSESTree.Node)=>ReturnType<ts.TypeChecker[K]>;};consttype=typeUtils.getTypeAtLocation(parserServices,node);

We'd probably want to export this as a publicly available & documented API, so it's not confusing to consumers why our source code doesn't look like examples.

One downside would be that we're obfuscating how to use TypeScript APIs. I hate to add to complexity of understanding these already hard-to-understand things...