5 NEW Features in TypeScript 5.5
Ғылым және технология
In this video CJ shows 5 of his favorite new features coming to TypeScript 5.5
00:00 Intro
00:09 Inferred Type Predicates
01:10 Improved Indexed Access
02:30 Type Imports in JSDoc
03:12 New Set Methods
03:49 configDir Template Variable
04:39 When can I use this?
5.5 RC Announcement | devblogs.microsoft.com/typesc...
TypeScript Type Predicates | www.typescriptlang.org/docs/h...
Control flow analysis for element access with variable index| github.com/microsoft/TypeScri...
TC39 Proposal Set Methods | github.com/tc39/proposal-set-...
Set Methods on MDS | developer.mozilla.org/en-US/d...
TypeScript 5.5 Iteration Plan | github.com/microsoft/TypeScri...
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Пікірлер: 10
Man, TS's inference is so powerful. It's insane how much it's able to deduce.
@moy2010
13 күн бұрын
To infer is the opposite of to deduce.
Meanwhile, massive migration to JS and Doc, leaving these monstrous redundant constructs in the past 😊
It looks like we are getting closer to computed types with the filter example.
CJ CJ CJ ..... Yeah
In the first and second examples, I guess assert can likewise be used?
@CodingGarden
14 күн бұрын
Yes! In the current version of TypeScript, a type assertion would fix the error. It is nice that one is not needed in v5.5 though.
@jamesmoynihan948
14 күн бұрын
Ya I hate running into that one. When you provide a type check clause right before the index error line, it's a super frustrating squiggly.
I did not understand anything at all. Why people are getting faster everyday?
I'm a hobbie-scripter and ts is a constant pain. I want it, kind of, but I hate it.