我正在研究的项目最近开始将Javascript项目移植到Typescript。具有类型的能力是一种真正的祝福，并且可以与VScode的语法/错误突出显示工具一起使用。
$ code -v
1.30.0
c6e592b2b5770e40a98cb9c2715a8ef89aec3d74
x64
$ cat package.js (for the typescript in the vs code)
{
"name": "typescript",
"author": "Microsoft Corp.",
"homepage": "https://www.typescriptlang.org/",
"version": "3.2.2",
...
某些（通常更大）文件不显示Typescript类型错误。例如，将这两行添加到文件末尾：
let a = 'a';
a = 5;
应显示如下消息：
类型'5'不能分配给类型'string'.ts（2322）
让a：字符串
但是在某些文件中却没有，在某些文件中却有。
我尝试了一种可重现性最小的案例，但到目前为止，似乎只从其他javascript（.js）文件导入可能与此有关。我还检查了Typescript的输出标签：
[Error - 11:08:03 AM] 'getApplicableRefactors' request failed with error.
Error processing request. Debug Failure. Invalid cast. The supplied value [object Object] did not pass the test 'isJsonSourceFile'.
Error: Debug Failure. Invalid cast. The supplied value [object Object] did not pass the test 'isJsonSourceFile'.
at Object.cast (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:1338:22)
at getTypeOfVariableOrParameterOrPropertyWorker (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35604:41)
at getTypeOfVariableOrParameterOrProperty (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35580:48)
at getTypeOfSymbol (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:35869:24)
at checkIdentifier (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:45805:49)
at checkExpressionWorker (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:51786:28)
at checkExpression (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:51758:42)
at checkNonNullExpression (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:48109:37)
at checkPropertyAccessExpressionOrQualifiedName (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:48142:28)
at checkPropertyAccessExpression (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:48135:20)
at getSymbolOfEntityNameOrPropertyAccessExpression (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:56657:25)
at getSymbolAtLocation (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:56713:28)
at Object.getSymbolAtLocation (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:30857:31)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115277:35)
at visitNode (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16148:24)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16335:24)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNode (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16148:24)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16365:21)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNode (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16148:24)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16394:24)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNode (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16148:24)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16398:21)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNodes (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16157:30)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16383:24)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNode (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16148:24)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16397:21)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNode (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16148:24)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16398:21)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNodes (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16157:30)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16383:24)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNode (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16148:24)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16278:21)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNodes (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16157:30)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16458:21)
at checkForUsedDeclarations (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115295:24)
at visitNodes (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16157:30)
at Object.forEachChild (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:16385:24)
at collectReadsAndWrites (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:115079:24)
at getPossibleExtractionsWorker (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:114414:38)
at getPossibleExtractions (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:114369:26)
at Object.getAvailableActions (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:113880:35)
at /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:108687:128
at getIterator (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:558:23)
at Object.next (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:553:35)
at Object.arrayFrom (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:1171:32)
at Object.getApplicableRefactors (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:108686:23)
at Object.getApplicableRefactors (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:117985:32)
at IOSession.Session.getApplicableRefactors (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:125605:53)
at Session.handlers.ts.createMapFromTemplate._a.(anonymous function) (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:124479:61)
at /Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:125824:88
at IOSession.Session.executeWithRequestId (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:125815:28)
at IOSession.Session.executeCommand (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:125824:33)
at IOSession.Session.onMessage (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:125846:35)
at Interface.<anonymous> (/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/node_modules/typescript/lib/tsserver.js:127106:27)
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)
我不知道是什么确切的文件或行引起了该问题。有人可以指出我正确的方向吗？