TypeScript 5.6 RC introduces several new features and updates. Notable additions include disallowed nullish and truthy checks, iterator helper methods, support for arbitrary module identifiers, and region-prioritized diagnostics in editors. There are also new compiler options like --noUncheckedSideEffectImports and --noCheck, improvements to project builds, and enhanced auto-import functionalities. The release focuses on improving error detection, typing options, and overall efficiency in large projects.
Table of contents
What’s New Since the Beta?Disallowed Nullish and Truthy ChecksIterator Helper MethodsStrict Builtin Iterator Checks (and --strictBuiltinIteratorReturn )Support for Arbitrary Module IdentifiersThe --noUncheckedSideEffectImports OptionThe --noCheck OptionAllow --build with Intermediate ErrorsRegion-Prioritized Diagnostics in EditorsGranular Commit CharactersExclude Patterns for Auto-ImportsNotable Behavioral ChangesWhat’s Next?1 Comment
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