Example-Project-Rollup Error

[tpfleging]

I've been trying to use the Rollup example project but haven't been successful yet.

When I execute "npm run start" I get the following error

> [email protected] start
> concurrently --kill-others --names tsc,wds "npm run tsc:watch" "wds --config wds.config.js"

[wds] /bin/sh: wds: command not found
[wds] wds --config wds.config.js exited with code 127
--> Sending SIGTERM to other processes..
[tsc] npm run tsc:watch exited with code SIGTERM
npm ERR! Lifecycle script `start` failed with error: 
npm ERR! Error: command failed 
npm ERR!   in workspace: [email protected] 

Any ideas on what I'm doing wrong?

[Westbrook]

Oh, looks like we don't usually run the project outside of the main library, and there are a couple of dependencies missing.

If you npm add @web/test-runner -D and then attempt that command do you have better luck?

[tpfleging]

When I run that npm add @web/test-runner -D I get this error:

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: @adobe/[email protected]
npm ERR! Found: @custom-elements-manifest/[email protected]
npm ERR! node_modules/@custom-elements-manifest/analyzer
npm ERR!   dev @custom-elements-manifest/analyzer@"^0.6.3" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer @custom-elements-manifest/analyzer@"^0.4 || ^0.5" from [email protected]
npm ERR! node_modules/cem-plugin-module-file-extensions
npm ERR!   dev cem-plugin-module-file-extensions@"^0.0.5" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR! 

[Westbrook]

So, you're running this from within the project. SWC is build with yarn, so you would be better off using it to install dependencies. If you install with yarn and then run the command, you shouldn't need to install anything new...

[tpfleging]

Thanks Westbrook. Sorry it may be a dumb question but what do I install with yarn?

[Westbrook]

If you run yarn it's the same as yarn install and it will install all the dependencies of the project. NPM isn't currently configured to run the project.