aspnetcore-angular-universal | NET Core & Angular Universal advanced starter | Server Side Rendering library

The original code running on ASP.Net Core 2.2 (upgraded from 2.1) didn't have start in package.json.

https://github.com/TrilonIO/aspnetcore-angular-universal/blob/master/package.json

When updating to ASP.Net Core 3.0, it is now looking for start script.

Why is it looking for start now?

---> System.AggregateException: One or more errors occurred. (The NPM script 'start' exited without indicating that the Angular CLI was listening for requests. The error output was: npm ERR! missing script: start

This is what is in the log:

0 info it worked if it ends with ok 1 verbose cli [ '/project/.nvm/versions/node/v10.8.0/bin/node', 1 verbose cli
'/project/.nvm/versions/node/v10.8.0/bin/npm', 1 verbose cli 'run', 1 verbose cli 'start', 1 verbose cli '--', 1 verbose cli
'--port', 1 verbose cli '54294' ] 2 info using npm@6.4.1 3 info using node@v10.8.0 4 verbose stack Error: missing script: start 4 verbose stack at run (/project/.nvm/versions/node/v10.8.0/lib/node_modules/npm/lib/run-script.js:155:19) 4 verbose stack at /project/.nvm/versions/node/v10.8.0/lib/node_modules/npm/lib/run-script.js:63:5 4 verbose stack at /project/.nvm/versions/node/v10.8.0/lib/node_modules/npm/node_modules/read-package-json/read-json.js:115:5 4 verbose stack at /project/.nvm/versions/node/v10.8.0/lib/node_modules/npm/node_modules/read-package-json/read-json.js:418:5 4 verbose stack at checkBinReferences_ (/project/.nvm/versions/node/v10.8.0/lib/node_modules/npm/node_modules/read-package-json/read-json.js:373:45) 4 verbose stack at final (/project/.nvm/versions/node/v10.8.0/lib/node_modules/npm/node_modules/read-package-json/read-json.js:416:3) 4 verbose stack at then (/project/.nvm/versions/node/v10.8.0/lib/node_modules/npm/node_modules/read-package-json/read-json.js:160:5) 4 verbose stack at ReadFileContext. (/project/.nvm/versions/node/v10.8.0/lib/node_modules/npm/node_modules/read-package-json/read-json.js:332:20) 4 verbose stack at ReadFileContext.callback (/project/.nvm/versions/node/v10.8.0/lib/node_modules/npm/node_modules/graceful-fs/graceful-fs.js:78:16) 4 verbose stack at FSReqWrap.readFileAfterOpen [as oncomplete] (fs.js:233:13) 5 verbose cwd /project/Dropbox/Workspace/MyProject/src/MyProject.Web/ClientApp 6 verbose Darwin 19.0.0 7 verbose argv "/project/.nvm/versions/node/v10.8.0/bin/node" "/project/.nvm/versions/node/v10.8.0/bin/npm" "run" "start" "--" "--port" "54294" 8 verbose node v10.8.0 9 verbose npm v6.4.1 10 error missing script: start 11 verbose exit [ 1, true ]

This is what is reported on the console:

---> System.IO.EndOfStreamException: Attempted to read past the end of the stream. at Microsoft.AspNetCore.SpaServices.AngularCli.AngularCliMiddleware.StartAngularCliServerAsync(String sourcePath, String npmScriptName, ILogger logger) --- End of inner exception stack trace --- at Microsoft.AspNetCore.SpaServices.AngularCli.AngularCliMiddleware.StartAngularCliServerAsync(String sourcePath, String npmScriptName, ILogger logger) --- End of inner exception stack trace --- at System.Threading.Tasks.Task1.GetResultCore(Boolean waitCompletionNotification) at System.Threading.Tasks.Task1.get_Result() at Microsoft.AspNetCore.SpaServices.AngularCli.AngularCliMiddleware.<>c.b__2_0(Task1 task) at System.Threading.Tasks.ContinuationResultTaskFromResultTask2.InnerInvoke() at System.Threading.Tasks.Task.<>c.<.cctor>b__274_0(Object obj) at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state) --- End of stack trace from previous location where exception was thrown --- at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread) --- End of inner exception stack trace --- at System.Threading.Tasks.Task1.GetResultCore(Boolean waitCompletionNotification) at System.Threading.Tasks.Task1.get_Result() at Microsoft.AspNetCore.SpaServices.Extensions.Util.TaskTimeoutExtensions.WithTimeout[T](Task1 task, TimeSpan timeoutDelay, String message) at Microsoft.AspNetCore.SpaServices.Extensions.Proxy.SpaProxy.PerformProxyRequest(HttpContext context, HttpClient httpClient, Task1 baseUriTask, CancellationToken applicationStoppingToken, Boolean proxy404s) at Microsoft.AspNetCore.Builder.SpaProxyingExtensions.<>c__DisplayClass2_0.d.MoveNext() --- End of stack trace from previous location where exception was thrown --- at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.HandleException(HttpContext context, ExceptionDispatchInfo edi) fail: Microsoft.AspNetCore.Server.Kestrel[13] Connection id "0HLS17GG2QFU7", Request id "0HLS17GG2QFU7:00000001": An unhandled exception was thrown by the application. System.AggregateException: One or more errors occurred. (One or more errors occurred. (The NPM script 'start' exited without indicating that the Angular CLI was listening for requests. The error output was: npm ERR! missing script: start