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EE84M3i 10 months ago

> ts/js is were ts is just js with types. You can comment out the types and it just runs.

Is this true in the general case? I thought there were typescript features that didn't have direct JavaScript alternatives, for example enums.

paulddraper 10 months ago | parent [-]

Enums and namespaces are the only runtime features of TypeScript.

So, yes, you can't just strip types, but it's close.

EE84M3i 10 months ago | parent [-]

Is there a comprehensive list of such incompatibilities documented somewhere?

judofyr 10 months ago | parent | next [-]

https://www.typescriptlang.org/tsconfig/#isolatedModules

paulddraper 10 months ago | parent [-]

That's not the same.

That guarantees that the types do not determine the output (e.g. no const enums), not that you can "strip" types to get the same output.

paulddraper 10 months ago | parent | prev [-]

Not that I'm aware of.

Decorators would be another example. (Though they have always been marked experimental.)

And of course JSX, but that's not a TypeScript invention.