TypeError: Cannot call method 'equals' of undefined

[agponte]

We've been using typedoc for a while, thank you BTW!! I updated to the latest version to get TS 1.5 support, the update/install went perfectly but I cannot generate documentation. I've tried node v0.12 and v0.10 and both error out.

Here is the stacktrace:

Using TypeScript 1.5.0-beta from C:\Program Files (x86)\nodejs\node_modules\typedoc\node_modules\typescript\bin

C:\Program Files (x86)\nodejs\node_modules\typedoc\bin\typedoc.js:6856
                    type.constraint.equals(this.constraint) &&
                                    ^
TypeError: Cannot call method 'equals' of undefined
    at TypeParameterType.equals (C:\Program Files (x86)\nodejs\node_modules\typedoc\bin\typedoc.js:6856:37)
    at Function.Type.isTypeListEqual (C:\Program Files (x86)\nodejs\node_modules\typedoc\bin\typedoc.js:6055:35)
    at C:\Program Files (x86)\nodejs\node_modules\typedoc\bin\typedoc.js:5185:52
    at Array.forEach (native)
    at C:\Program Files (x86)\nodejs\node_modules\typedoc\bin\typedoc.js:5184:52
    at Array.forEach (native)
    at C:\Program Files (x86)\nodejs\node_modules\typedoc\bin\typedoc.js:5182:52
    at Array.forEach (native)
    at ImplementsPlugin.analyzeClass (C:\Program Files (x86)\nodejs\node_modules\typedoc\bin\typedoc.js:5161:46)
    at C:\Program Files (x86)\nodejs\node_modules\typedoc\bin\typedoc.js:5226:35

[agponte]

I found the offending class in our code base but it compiles fine outside of typedoc. I comment out the entire class, re-run typedoc and I get a host of other issues from the TS compiler that are not a problem in production.

I downgraded to typedoc v0.3.3 and everything is running fine again except I would like TS 1.5 support because that is what we are using in production.

Let me know how I can help you track this down...thanks!

[jonnermut]

Same here

Using TypeScript 1.5.0-beta from /git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/typescript/bin

/git/refactor/tools/FormEngine/node_modules/typedoc/bin/typedoc.js:6856
type.constraint.equals(this.constraint) &&
^
TypeError: Cannot call method 'equals' of undefined
at TypeParameterType.equals (/git/refactor/tools/FormEngine/node_modules/typedoc/bin/typedoc.js:6856:37)
at Function.Type.isTypeListEqual (/git/refactor/tools/FormEngine/node_modules/typedoc/bin/typedoc.js:6055:35)
at /git/refactor/tools/FormEngine/node_modules/typedoc/bin/typedoc.js:5185:52
at Array.forEach (native)
at /git/refactor/tools/FormEngine/node_modules/typedoc/bin/typedoc.js:5184:52
at Array.forEach (native)
at /git/refactor/tools/FormEngine/node_modules/typedoc/bin/typedoc.js:5182:52
at Array.forEach (native)
at ImplementsPlugin.analyzeClass (/git/refactor/tools/FormEngine/node_modules/typedoc/bin/typedoc.js:5161:46)
at /git/refactor/tools/FormEngine/node_modules/typedoc/bin/typedoc.js:5226:35
:typedoc FAILED

[jonnermut]

version 0.33 gave a different error:

Using TypeScript 1.4.1 from /git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/typescript/bin

/git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/handlebars/dist/cjs/handlebars/base.js:69
throw new Exception("Missing helper: '" + arguments[arguments.length-1].
^
Error: Missing helper: 'ifSignature'
at new Error (native)
at Error.Exception (/git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/handlebars/dist/cjs/handlebars/exception.js:16:41)
at ReferenceType. (/git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/handlebars/dist/cjs/handlebars/base.js:69:13)
at Object.eval (eval at (/git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/handlebars/dist/cjs/handlebars/compiler/javascript-compiler.js:209:23), :5:102)
at Object.prog as fn
at ReferenceType. (/git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/handlebars/dist/cjs/handlebars/base.js:181:22)
at Object.eval (eval at (/git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/handlebars/dist/cjs/handlebars/compiler/javascript-compiler.js:209:23), :5:35)
at Object.prog as fn
at ReferenceType. (/git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/handlebars/dist/cjs/handlebars/base.js:181:22)
at Object.eval (eval at (/git/refactor/tools/FormEngine/node_modules/typedoc/node_modules/handlebars/dist/cjs/handlebars/compiler/javascript-compiler.js:209:23), :5:35)
:typedoc FAILED

[sebastian-lenz]

Hi, thank you both for reporting this. I've found a potential flaw in the equality check for type parameters and I've included a quick fix.

For being able to better understand what's going wrong it would be great if you could describe the code that causes this problem. It must be a class implementing an interface with a generic type parameter. I guess that either the interface or both the interface and the class use a type parameter without a type constraint? I would like to add this as a test case.

[jonnermut]

is there any way to know what file its processing? code base it way too big to try and work it out

[jonnermut]

Thanks for fixing this by the way. I know you just put out a release, but would be awesome to get this into the NPM soon, as it's stopping us upgrading to typescript 1.5, which has so much cool new stuff!

[sebastian-lenz]

You should be able to see where the error is thrown if you add the --verbose option. TypeDoc will print the symbol and file names while processing them.

I would be happy to publish a new version if we can ensure that this error is fixed.

[jonnermut]

Hi Sebastian, think its this file:
https://dl.dropboxusercontent.com/u/1341356/EventDispatcher.ts

Which indeed has a class implementing a generic interface (EventDispatcher)

[sebastian-lenz]

Great, I've added you code as a test case, of course I've removed all logic so only the bare signatures are left over. The new version passes the test so I think the bugfix is sufficient.

I've just pushed version 0.3.7 to NPM so you can try it out for yourself.