TS1.8.2 Compile on save not working when combining to a single js file

[rankida]

Hi.

I have a large ASP.MVC site that has numerous .ts files. Having upgraded from TS 1.6 to 1.8 the compile on save functionality was no longer working. We Combine JavaScript output into file but if I remove this it generated the individual file on save without issue.

So I am lead to believe it is an issue with TS1.8 when combining to a single file the Compile on save function is not working. When we build the solution the file is generated correctly.

I am running VS2015 Update 1 on Windows 10.
We are running TS1.8.2 installed via the VS2015 tool download from typescriptlang.org

Any help on this issue would be greatly appreciated.

Thanks

[Lanayx]

Same issue (just updgraded to 1.8.4). Compile on build works, compile on save doesn't

[mhegazy]

Do you see this on newer projects? do you see any error messages in the status bar? e.g.:

Can you share a project we can reproduce this on?

[Lanayx]

No errors, and compile on build works well without any issues. The message on saving is just - 'file saved', but no js is generated. Will check this in the new project tomorrow.

[paulvanbrenk]

@Lanayx Can you search the drive for that file... it may not be generated in the right location.

[rankida]

Hi @mhegazy

I also didn't see any indication from the status bar that anything was happening (other than File Saved )

My entire office is experiencing issues with TypeScript 1.8. Some people are reporting that the file is generated after minutes and extremely high CPU usage.

A two typescript file project appears to work on save so I am now wondering if it is because we have a large number (most likely hundreds) of typescript files in the project. In TS 1.6 it could take 3-5 seconds to tell us Generations successful in the status bar, but now many people just see 100% CPU load.

Happy to run some tests if they would be of help, but the repo is not publicly accessible.

Thanks

[mhegazy]

@rankida We would love to look at your project. can you share your project? we would be happy to sign an NDA for it. you can email a sample directly to mhegazy at microsoft

[rankida]

@mhegazy Thanks for responding so soon. We have hived off all the typescript from the rest of the app so that we can test the TS1.8 issues, so this might be able to be shared with Microsoft, but I would obviously need approval from my bosses.

[vladima]

This issue looks like a dupe of #7221 - fix for it will go in soon and should be available in today's nightly builds (available via typescript@next on npm). You can pick typescriptServices.js in <VS2014-INSTALL-PATH>\Common7\IDE\CommonExtensions\Microsoft\TypeScript with one from the nightly build see if it fixes problem

[Lanayx]

Just tested with a new project. Compile on save does work until you add a tsconfig file. After it is added, compile doesn't work anymore. After I removed tsconfig, compile on save worked again.

[mwijnands]

+1. Also I added "compileOnSave": true, to the tsconfig.json but still... doesn't work.

Above workaround fixes it.

[mhegazy]

@Lanayx compileOnSave is turned off by default for new tsconfig.json files. did you add "compileOnSave" property to your tsconfig? (see https://github.com/Microsoft/TypeScript/wiki/tsconfig.json#compileonsave)