Jetbrains Goland 2018.3.1 Direct

: Enhanced TypeScript 3.1 integration, including support for mappable tuple and array types.

GoLand 2018.3 introduced several significant capabilities that were further refined in the 2018.3.1 patch: JetBrains GoLand 2018.3.1

: New inspections like Unhandled Error (alerts when returned errors aren't checked) and Unreachable Code were added. : Enhanced TypeScript 3

: Introduced the Change Signature refactoring, allowing users to modify functions and methods in a few clicks, and upgraded the Inline refactoring. : Enhanced TypeScript 3.1 integration