TSX: "TypeError: Cannot read property 'flags' of undefined"

[bluekeyes]

Compiling the following TSX code crashes tsc (1.5.3, revision 01244d6):

/// <reference path="typings/react/react.d.ts" />
import React = require('react');

declare module BaseComponent {
    var base : React.Component<any, {}>;
    export = base;
}

class TestComponent extends React.Component<any, {}> {
    render() {
        return <BaseComponent />;
    }
}

$ tsc --module commonjs --jsx react test.tsx
/path/to/TypeScript/built/local/tsc.js:34402
                throw e;
                      ^
TypeError: Cannot read property 'flags' of undefined
    at getApparentType (/path/to/TypeScript/built/local/tsc.js:15667:21)
    at getPropertyOfType (/path/to/TypeScript/built/local/tsc.js:15750:20)
    at getTypeOfPropertyOfType (/path/to/TypeScript/built/local/tsc.js:14696:24)
    at getJsxElementAttributesType (/path/to/TypeScript/built/local/tsc.js:19383:46)
    at checkJsxOpeningLikeElement (/path/to/TypeScript/built/local/tsc.js:19458:40)
    at checkJsxSelfClosingElement (/path/to/TypeScript/built/local/tsc.js:19110:13)
    at checkExpressionWorker (/path/to/TypeScript/built/local/tsc.js:21715:28)
    at checkExpression (/path/to/TypeScript/built/local/tsc.js:21621:42)
    at checkExpressionCached (/path/to/TypeScript/built/local/tsc.js:21568:38)
    at /path/to/TypeScript/built/local/tsc.js:20877:32

Environment:

• tsc 1.5.3 (01244d6)
• React 0.13.3
• DefinitelyTyped React definitions (DefinitelyTyped/DefinitelyTyped@71abea7)
• node v0.10.38

I discovered this issue while trying to write type definitions for the Griddle library. I'm new to TypeScript/TSX/React, so I apologize in advance if this is actually a problem with my code or with the React typings. The fact that the compiler crashed (and this is a new feature) suggested reporting here first.

[RyanCavanaugh]

Slightly confused on the posted repro. It's illegal to use export = in an internal module, and it's illegal to have a declare module "BaseComponent" { in a file that contains imports/exports.

[RyanCavanaugh]

Got a working repro

[bluekeyes]

Sorry for the confusion - the BaseComponent module was originally in a .d.ts file and then the main file imported the defined object.