"Cannot read property 'kind' of undefined" is thrown by declaring unassigned constants after exported const in JS

[jpinilloslr]

monaco-editor version: 0.20.0
Browser: Google Chrome, Safari, Microsoft Edge
OS: MacOS Catalina 10.15.6

1. Open the Monaco Editor homepage: https://microsoft.github.io/monaco-editor/
2. Select javascript or typescript language.
3. Paste this code:

export const foo = 1;
const bar

Actual result: The following error is printed to the browser console:

Uncaught Error: Cannot read property 'kind' of undefined

TypeError: Cannot read property 'kind' of undefined
    at Object.e.isImportClause (tsWorker.js:21)
    at Object.n.deleteDeclaration (tsWorker.js:21)
    at r (tsWorker.js:21)
    at n.finishDeleteDeclarations (tsWorker.js:21)
    at n.getChanges (tsWorker.js:21)
    at Function.n.with (tsWorker.js:21)
    at Object.getCodeActions (tsWorker.js:21)
    at tsWorker.js:21
    at Object.e.flatMap (tsWorker.js:21)
    at Object.n.getFixes (tsWorker.js:21)
    at errors.ts:22

Expected result: No errors are shown in the browser console.

Screenshot:

[rcjsuen]

@jpinilloslr Sounds like #1779.

[jpinilloslr]

That's right @rcjsuen, it looks like the same issue. Tracked by microsoft/TypeScript#33726.