TypeError: Cannot read property 'flags' of undefined

[mhegazy]

import {Component } from "react";

interface MapProps {
    prop1: string;
}

export class MyMap<P = MapProps, E = number> extends Component<P, E> { }


let x = <Map prop1="hi" />

Put your cursor on Map

TypeError: Cannot read property 'flags' of undefined
    at Object.resolveAlias [as getAliasedSymbol] (C:\ls\tsserver.js:26702:36)
    at Object.getCodeActions (C:\ls\tsserver.js:85017:42)
    at C:\ls\tsserver.js:84359:33
    at Object.forEach (C:\ls\tsserver.js:1428:30)
    at Object.getFixes (C:\ls\tsserver.js:84358:16)
    at C:\ls\tsserver.js:87080:40
    at Object.forEach (C:\ls\tsserver.js:1428:30)
    at Object.getCodeFixesAtPosition (C:\ls\tsserver.js:87068:16)
    at IOSession.Session.getCodeFixes (C:\ls\tsserver.js:93345:64)
    at Session.handlers.ts.createMapFromTemplate._a.(anonymous function) (C:\ls\tsserver.js:92338:61)

[ghost]

I'm seeing a related error:

{
  "seq": 0,
  "type": "response",
  "command": "getCodeFixes",
  "request_seq": 7,
  "success": false,
  "message": "Error processing request. Debug Failure. False expression: Should only get Alias here.\nError: Debug Failure. False expression: Should only get Alias here.\n    at Object.assert (/home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:2959:23)\n    at Object.resolveAlias [as getAliasedSymbol] (/home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:23331:22)\n    at Object.getImportCodeActions [as getCodeActions] (/home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:71302:38)\n    at /home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:70603:33\n    at Object.forEach (/home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:1286:30)\n    at Object.getFixes (/home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:70602:16)\n    at /home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:73252:40\n    at Object.forEach (/home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:1286:30)\n    at Object.getCodeFixesAtPosition (/home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:73240:16)\n    at IOSession.Session.getCodeFixes (/home/andy/.nvm/versions/node/v7.10.0/lib/node_modules/typescript/lib/tsserver.js:78933:64)"
}