Typescript Duplicate identifier 'Node'

Question

When compiling the following typescript:

class Node {
}

It works in the playground but not using VS2013 or grunt-typescript which generates the error

TS2000: Duplicate identifier 'Node'

I guess it can only be because its a reserved word but I have searched the typescript spec for reserved words and can't find any. Is there a list available and why is such a common class name reserved?

Ryan Cavanaugh · Accepted Answer · 2014-03-19 13:03:01Z

3

Node is already an object in JavaScript. It's not a reserved word, but it is a built-in thing that you don't want to accidently overwrite at runtime (you would break other libraries).

> Node.prototype
    Node {insertBefore: function, replaceChild: function, removeChild: function, appendChild: function, hasChildNodes: function…}

answered Mar 19, 2014 at 13:03

Ryan Cavanaugh

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daw · Accepted Answer · 2014-03-19 13:02:30Z

0

Ok it looks like there is a library file:

lib.d.ts

That contains 8 KLOC of typescript without any form of module or namespace that is causing me all sorts of name clashes. Frustrating given the compiler doesn't give any locations and I spend hours tearing apart my build system looking for some sort of fault.

answered Mar 19, 2014 at 13:02

daw

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1 Comment

A. K-R Over a year ago

The lib.d.ts gives the typescript compiler information about standard javascript methods (methodname, typed parameters and typed returnvalue). This is exactly why you want to use typescript...

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