ERROR in Error: Debug Failure. False expression.

[deepthan]

ERROR in Error: Debug Failure. False expression.
    at tryReuseStructureFromOldProgram (D:\per\Angular-demo\node_modules\@angular\cli\node_modules\typescript\lib\typescript.js:70007:22)
    at Object.createProgram (D:\per\Angular-demo\node_modules\@angular\cli\node_modules\typescript\lib\typescript.js:69763:34)
    at _donePromise.Promise.resolve.then.then (D:\per\Angular-demo\node_modules\@angular\cli\node_modules\@ngtools\webpack\src\plugin.js:412:32)
    at process._tickCallback (internal/process/next_tick.js:109:7)

像这样莫名的错误，直接重启项目即可，或者重启编辑器，再不行就重启电脑...