webstorm TS support is great, and it's JS support is the best in the business imho. However, for some things VSCode is faster when it comes to TS. As a specific example, using lodash in webstorm it takes significantly longer for intellisense to popup than it does in VSCode. Type "_." and wait - in VSCode it pops up the TS-based completion nearly instantly. In webstorm it takes a bit.