In order to successfully build and test SignalR you'll need to ensure that your system has the following installed:
- NodeJS version 16.11.0 or later
- NPM (typically bundled with NodeJS)
Full instructions for how to build this repository are in /docs/BuildFromSource.md.
The short-hand version of that is to simply run the build.cmd or build.sh script that's in the root of the SignalR folder. The build script will automatically install the necessary .NET SDK version.
If, after running build.cmd or build.sh, you did not get a successful build, please refer to the Troubleshooting section below. If your problem isn't covered, please check that you've met all of the prerequisites. If you still can't get the solution to build successfully, please open an issue so that we might assist and please consider updating this documentation to help others in the future.
Below are some tips for troubleshooting common issues.
Use the startvs.cmd script to launch Visual Studio.
Running build.cmd or build.sh immediately after installing NodeJS can cause an NPM error: EPERM: operation not permitted, rename. Executing the NPM command npm cache clean will fix this issue.