Assert getImportCompletionAction

[amcasey]

From 3.1.3 (completionEntryDetails)

Error: Debug Failure. False expression.
    at Object.getImportCompletionAction (tsserver.js:107970:22)
    at getCompletionEntryCodeActionsAndSourceDisplay (tsserver.js:94059:33)
    at Object.getCompletionEntryDetails (tsserver.js:94009:30)
    at Object.getCompletionEntryDetails (tsserver.js:114823:35)
    at tsserver.js:122634:57
    at Object.mapDefined (tsserver.js:578:30)
    at IOSession.Session.getCompletionEntryDetails (tsserver.js:122632:33)
    at Session.handlers.ts.createMapFromTemplate._a.(anonymous function) (tsserver.js:121674:61)
    at tsserver.js:123086:88
    at IOSession.Session.executeWithRequestId (tsserver.js:123077:28)
    at IOSession.Session.executeCommand (tsserver.js:123086:33)
    at IOSession.Session.onMessage (tsserver.js:123106:35)
    at Interface.<anonymous> (tsserver.js:124369:27)
    at emitOne (events.js:116:13)
    at Interface.emit (events.js:211:7)
    at Interface._onLine (readline.js:282:10)
    at Interface._normalWrite (readline.js:424:12)
    at Socket.ondata (readline.js:141:10)
    at emitOne (events.js:116:13)
    at Socket.emit (events.js:211:7)
    at addChunk (_stream_readable.js:263:12)
    at readableAddChunk (_stream_readable.js:250:11)
    at Socket.Readable.push (_stream_readable.js:208:10)
    at Pipe.onread (net.js:594:20)

[amcasey]

Possibly part of #27640

[DanielRosenwasser]

If it is, then it's a duplicate of #27338.

I don't think this is a duplicate of #27640 or #27338. Those failed in completions.ts, this is failing in getImportCompletionAction in importFixes.ts at Debug.assert(exportInfos.some(info => info.moduleSymbol === moduleSymbol));.