tl;dr:Some major highlights of TypeScript 4.5 are (1) The awaited type and promise improvements. (2) Supporting lib from node\_modules. (3) Template string types as discriminants.
tl;dr:Major highlights: (1) Control flow analysis of aliased conditions and discriminants. (2) Symbol and template string pattern index signatures. (3) Defaulting to the "unknown" type in catch variables, and more.
tl;dr:"This version of the language represents our next generation of TypeScript releases, as we dive deeper into expressivity, productivity, and scalability."
tl;dr:New version includes stricter generators, more accurate array spread, improved UX around promises, better Unicode support for identifiers, and more.