Step 3 - app run/build error

[RobMDoe]

Please provide us with the following information:

This issue is for a: (mark with an x)

- [x] bug report -> please search issues before submitting
- [ ] feature request
- [ ] documentation issue or request
- [ ] regression (a behavior that used to work and stopped in a new release)

Minimal steps to reproduce

Problems with Step 3 'Simulate Devices'. Have used GIT in Windows CLI to clone 'mock-devices' and 'azure-digital-twins-unreal-integration' to my root folder C:\users\rober. Have copied hvac.ts, index.ts, smartbinary.ts files between as instructed. Changed path to src/client (incidentally, the copied code attaches client to npm), then > npm ci && npm run build. The app doesn't build.

Any log messages given by the failure

Attached below.

Expected/desired behavior

Run/build app

OS and Version?

Windows 11 Pro

Versions

21H2

Mention any other details that might be useful

Otherwise all fine up to this stage of Step 3.

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Thanks! We'll be in touch soon.

2022-02-04T23_36_02_363Z-debug - Copy.log

[AshokPeddakotla-MSFT]

@stevebus Steve Busby FTE @SamWSP @3DStephen @marvin-garcia could you please help address this issue. Related to : https://docs.microsoft.com/en-us/answers/questions/724488/index.html

[stevebus]

@adamlash will own this project now from the MSFT side and check into this.

[adamlash]

Hey @RobMDoe ,

It looks like the root of this issue is to do with a Dependency on the Simulator node-sass which uses the node-gyp package to compile various parts of the Simulator. It is expecting Python2.7 and VS 2017 C++ Tools to be installed and available somewhere on the path (or in the directories eg C:/Python27 or the VS default install dir)

As a workaround for now, the following should suffice:

• Install Python2.7 (https://www.python.org/download/releases/2.7/)
• Confirm VS 2017 Visual C++ Build tools is installed (This can be found at: https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=BuildTools&rel=15)

Re-run the command npm ci && npm run build

Let me know if this functions for you! I replicated this on a Virtual Machine and these were the steps required. I'll close off this issue in 2 weeks If I don't hear back.

Future fixes should remove the simulators dependency on node-sass as this has now been deprecated per: https://www.npmjs.com/package/node-sass. Will look into Simulators' build and consider if a PR is required to remove this deprecated dependency.

[RobMDoe]

Hi @adamlash . Thanks for your quick response. Python27 and VS 2017 Build Tools installed and now all running perfectly.

[stevebus]

@RobMDoe - thanks for reporting the issue and let us know if you have any other problems!

@adamlash - thanks for the research and the fix!