Crash report

[devanshj]

Bug Report

💻 Code

$ git clone https://github.com/devanshj/txstate.git
$ cd txstate
$ git checkout tsc-crash-1
$ yarn
$ yarn tsc --noEmit

You can check the last commit that caused the crash. The change is very minimal, so it'll be easier to debug.

🙁 Actual behavior

tsc exited with code 1, here's the stack trace

E:\txstate\node_modules\typescript\lib\tsc.js:92222
                throw e;
                ^

TypeError: Cannot read property 'length' of undefined
    at Object.first (E:\txstate\node_modules\typescript\lib\tsc.js:978:31)
    at addPropertyToElementList (E:\txstate\node_modules\typescript\lib\tsc.js:41273:35)
    at createTypeNodesFromResolvedType (E:\txstate\node_modules\typescript\lib\tsc.js:41243:29)
    at createTypeNodeFromObjectType (E:\txstate\node_modules\typescript\lib\tsc.js:41067:35)
    at visitAndTransformType (E:\txstate\node_modules\typescript\lib\tsc.js:41009:34)
    at createAnonymousTypeNode (E:\txstate\node_modules\typescript\lib\tsc.js:40952:36)
    at typeToTypeNodeHelper (E:\txstate\node_modules\typescript\lib\tsc.js:40853:28)
    at serializeTypeForDeclaration (E:\txstate\node_modules\typescript\lib\tsc.js:41979:30)
    at addPropertyToElementList (E:\txstate\node_modules\typescript\lib\tsc.js:41309:59)
    at createTypeNodesFromResolvedType (E:\txstate\node_modules\typescript\lib\tsc.js:41246:25)

🙂 Expected behavior

tsc should exit with code 0