TypeScript 5.4, a planned update to the strongly typed JavaScript variant from Microsoft, has graduated to the release candidate stage. New capabilities in version 5.4 include preserved narrowing within function closures created after the last assignment and a NoInfer type to block inferences to valid but unwanted types.
The release candidate was published February 22, following a beta release from January 29. A final release is expected March 5. TypeScript 5.4 can be accessed via NuGet or NPM. In NPM, use the following command:
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