The JavaScript and TypeScript execution environment Deno development team has improved the language server and IDE functions in the latest 1.27 version. TypeScript 4.4 added Inlay Hints, which Deno 1.27 exposes to the language server protocol. Inlay hints provide small text snippets in the code that display information about the code. The official mentions that embedded hints make the code more readable and fill in the information gaps in the code, especially in TypeScript or type-checked JavaScript type inference, the embedded hint directly provides the inferred type, and developers no longer need to Hover over a variable to see the variable type.
