Merge with files you already have
Paste a file and the generated one keeps your content and adds the deeplinker part. The page cannot read your project, so this is how existing files are merged.
The same file the command line reads, so you can keep it in your project and run
npx deeplinker build later. The form edits this text; this tab reaches every
option.
Add a domain and at least one app, and the files appear here.