Deno•3y ago

cli/tsc crashes with Uncaught TypeError

Using latest Deno (1.32.4), this only happens on certain files, but it effectively means that I cannot do type checking with Deno now. The error (somewhat opaque since this looks like generated code):

error: Uncaught TypeError: Cannot read properties of undefined (reading 'kind')
    at <anonymous> (internal:deno_tsc/tsc/00_typescript.js:19111:18)

error: Uncaught TypeError: Cannot read properties of undefined (reading 'kind')
    at <anonymous> (internal:deno_tsc/tsc/00_typescript.js:19111:18)

Patrick (he/him)OP•4/13/23, 10:25 PM

appears to be happening on the first line of this function:

Patrick (he/him)OP•4/13/23, 10:27 PM

it's probably some syntax error in my code at the moment that's causing the crash. If I the error goes away

Patrick (he/him)OP•4/13/23, 10:38 PM

ok I figured it out. Seems like it is a bug in the cli/tsc code. If I use in a function's parameters, it crashes. However, if I assign that type to a type alias (e.g. ) then use that alias in the function's parameters, no crash. Not too bad, makes my code more readable anyway.

lcasdev•4/15/23, 8:03 AM

Can you share the project this is happening in? cc @dsherret

lcasdev•4/15/23, 8:04 AM

Oh I see you figured it out already. May be worth opening an issue in the TypeScript repo