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The native port of the TypeScript compiler additionally has made important progress, with TypeScript 7.0 sort checking practically full. A frequent query is whether or not it’s “secure” to make use of TypeScript 7.0 to validate a construct, Rosenwasser mentioned, or in different phrases, does the TypeScript 7.0 compiler reliably discover the identical errors that TypeScript 5.9 does? The reply is sure, he mentioned. For context, there have been round 20,000 compiler take a look at instances, of which about 6,000 produce not less than one error in TypeScript 6.0. In all however 74 instances, TypeScript 7.0 additionally produces not less than one error. Builders can confidently use TypeScript 7.0 immediately to type-check a challenge for errors, Rosenwasser mentioned. Past single-pass/single-project sort checking, the command-line compiler additionally has reached main parity. Options similar to --incremental, challenge reference help, and --build mode are all ported over and dealing.
TypeScript 7.0 will take away behaviors and flags deliberate for deprecation in TypeScript 6.0. An inventory of upcoming deprecations in TypeScript 6.0 could be seen within the issue tracker. For emit, --watch, and API capabilities, the JavaScript pipeline shouldn’t be fully full. Builders who don’t want JavaScript emit from TypeScript, operating tsgo for a construct will work effective, Rosenwasser mentioned. Additionally, TypeScript 7.0 (Corsa) is not going to help the prevailing Strada API. The Corsa API remains to be a piece in progress.
With TypeScript 6.0, there isn’t any intention to supply a TypeScript 6.1 launch, though there could also be patch releases for TypeScript 6. “You possibly can consider TypeScript 6.0 as a ‘bridge’ launch between the TypeScript 5.9 line and seven.0,” Rosenwasser mentioned. “6.0 will deprecate options to align with 7.0, and shall be extremely appropriate when it comes to type-checking habits.” The intent is to make sure that TypeScript 6.0 and TypeScript 7.0 are as appropriate as doable.
