I was looking at google's new node SDK for gemini.

I like this "disjoint types" pattern. A very good way to make your TypeScript very readable + meaningful, I have used something similar, but not with the "never" trick.

Building https://srcbook.com // creator of the https://blockchainsmokers.xyz 

Discriminated Unions are a good feature, if only typescript had a better way to actually identify the type (I know it’s javascript’s fault it can’t, but I still wish it did)

BDFL of Quilibrium, Eng @ Farcaster, ex-Coinbase, always opinionated, never hydrated

/quilibrium

Couldn't you use a custom type property to identify the type? (i.e. InlineDataPart { type: "inline" }, TextPart { type: "text" })