The Metadata Editor web component npm package is located in the Azure DevOps npm feed. In order to install the package from the feed, please follow the instructions listed below:
Add a ".npmrc" file to your project, in the same directory as your package.json. The content of that npmrc should look like below which point to the npm feed.
2. Install VSTS auth helper npm package by Microsoft to help you authenticate to the feed.
npm install -g vsts-npm-auth
3. Run below command and point the "config" to the .npmrc file you just created. You will be prompted for authentication to the npm feed. (The auth token will be updated to your local user .npmrc file)
vsts-npm-auth -config .npmrc
4. Once authenticated, you can then proceed to install MetadataEditor package from the feed.
npm install @firstname.lastname@example.org