Error introduced into 10/28 @next build

[ntilwalli]

Some change between typescript@2.1.0-dev.20161027 and typescript@2.1.0-dev.20161028 introduced this error into my build. This issue also exists in typescript@2.1.0-dev.20161029

/Users/ntilwalli/dev/spotlight/node_modules/typescript/lib/typescript.js:23590
            result.declarations = symbol.declarations.slice(0);
                                                     ^

TypeError: Cannot read property 'slice' of undefined
    at cloneSymbol (/Users/ntilwalli/dev/spotlight/node_modules/typescript/lib/typescript.js:23590:54)
    at mergeModuleAugmentation (/Users/ntilwalli/dev/spotlight/node_modules/typescript/lib/typescript.js:23683:90)
    at initializeTypeChecker (/Users/ntilwalli/dev/spotlight/node_modules/typescript/lib/typescript.js:41037:25)
    at Object.createTypeChecker (/Users/ntilwalli/dev/spotlight/node_modules/typescript/lib/typescript.js:23527:9)
    at getDiagnosticsProducingTypeChecker (/Users/ntilwalli/dev/spotlight/node_modules/typescript/lib/typescript.js:60181:93)
    at Object.getGlobalDiagnostics (/Users/ntilwalli/dev/spotlight/node_modules/typescript/lib/typescript.js:60490:41)
    at Tsifier.checkSemantics (/Users/ntilwalli/dev/spotlight/node_modules/tsify/lib/Tsifier.js:219:37)
    at Tsifier.compile (/Users/ntilwalli/dev/spotlight/node_modules/tsify/lib/Tsifier.js:179:34)
    at Tsifier.generateCache (/Users/ntilwalli/dev/spotlight/node_modules/tsify/lib/Tsifier.js:156:8)
    at DestroyableTransform.flush [as _flush] (/Users/ntilwalli/dev/spotlight/node_modules/tsify/index.js:73:12)

[aluanhaddad]

Same here it is blowing up in VS Code as soon as it tries to resolve any imports.

[vladima]

@aluanhaddad can you share a repro?

[vladima]

I've reproed it: https://github.com/vladima/repro-11937
@andy-ms it seems to be related to your change with untyped modules, can you please take a look?

[aluanhaddad]

@vladima Sorry, I can't reproduce it any longer. I was running with a global install using VS Code typescript.tsdk. I swapped versions to 2.1.0-dev.20161027 afterwards and I no longer observe the issue on reinstallation of 20161028 or 20161029.

Update:
The Repro you just posted does exhibit the issue.

[mhegazy]

@ntilwalli and @aluanhaddad the fix should be in tonight's typescript@next. please give it a try and let us know if you are still running into issues.