Re-exporting JSX namespace causes Typescript to crash

[just-boris]

Search Terms:

• Cannot read property 'get' of undefined
• getJsxLibraryManagedAttributes
• getJsxManagedAttributesFromLocatedAttributes

Code

index.tsx

import * as MyLib from "./library";

const content = <my-element/>;

library.ts

function createElement(element: string, props: any, ...children: any[]): any {}

namespace JSX {
  export interface IntrinsicElements {
    [key: string]: Record<string, any>;
  }
}

export { createElement, JSX };

Expected behavior:

The following code should compile

Actual behavior:

Compilation fails with the following error in the console:

$ ./node_modules/.bin/tsc -p tsconfig.json
/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:71803
                throw e;
                ^

TypeError: Cannot read property 'get' of undefined
    at getSymbol (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:26100:38)
    at getJsxLibraryManagedAttributes (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:40495:36)
    at getJsxManagedAttributesFromLocatedAttributes (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:39854:30)
    at getJsxPropsTypeFromCallSignature (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:39809:25)
    at getEffectiveFirstArgumentForJsxSignature (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:39805:54)
    at resolveJsxOpeningLikeElement (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:42133:112)
    at resolveSignature (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:42170:28)
    at getResolvedSignature (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:42182:26)
    at checkJsxOpeningLikeElementOrOpeningFragment (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:40630:27)
    at checkJsxSelfClosingElementDeferred (/Users/serdiuk/coding/test/node_modules/typescript/lib/tsc.js:40274:13)

Tested on both v3.3.3333 and 3.4.0-dev

Playground Link:

Not possible to reproduce in playground, since it requires multiple files interaction.
However, I have a simple reproduction here: https://github.com/just-boris/typescript-30153

Related Issues:

• Allow the use of a module JSX namespace #8757

[RyanCavanaugh]

Definitely a bug, but I'm curious why you're doing this

[just-boris]

In my case, that was a re-export initially:

export { createElement, JSX } from 'some-vdom-lib';

This code caused Typescript to crash, while wildcard export export * from 'some-vdom-lib'; works fine

[pmkroeker]

This issue cropped up on me in preactjs/preact#1703.
TS Version 3.5.1

Fails with this console message:

C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:69366
                throw e;
                ^

TypeError: Cannot read property 'get' of undefined
    at getSymbol (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:25435:38)
    at getNameFromJsxElementAttributesContainer (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:38912:68)
    at getJsxElementChildrenPropertyName (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:38935:20)
    at createJsxAttributesTypeFromAttributesProperty (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:38712:43)
    at checkJsxAttributes (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:38801:20)
    at checkExpressionWorker (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:42410:28)
    at checkExpression (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:42302:42)
    at checkExpressionCached (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:42183:38)
    at checkJsxAttributesAssignableToTagNameAttributes (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:39210:40)
    at checkJsxOpeningLikeElementOrOpeningFragment (C:\Users\Peter\AppData\Roaming\npm\node_modules\typescript\lib\tsc.js:39176:17)
PS C:\Users\Peter\Documents\GitHub\preact\compat\test\ts>

At the time of crash, logging name at the top of the getSymbol function returns ElementChildrenAttribute

[pmkroeker]

SOLVED. My global install of TS was incorrect! Fixed when I updated my global install.