Function pluginIndexSource_parse

pluginIndexSource_parse(
    word: string,
    bare: "host" | "cube",
    ref?: string,
): PluginIndexSource | null
Parses an index source word.

owner/repo[@ref] is a GitHub repository; host:<path> a host path; cube:<path> a CUBE path. Any other word is a path, read where bare says: plugin sync reads a bare path on CUBE, plugin validate (which needs no CUBE) on the host.
Parameters
- word: string
  The source as typed.
- bare: "host" | "cube"
  Where a path with no prefix is read.
- Optionalref: string
  A ref overriding the word's own (--ref), for a GitHub source.
Returns PluginIndexSource | null
The parsed source, or null for an empty word.
Example
```
pluginIndexSource_parse('FNNDSC/chris-plugins@v1', 'cube'); // { kind: 'github', …, ref: 'v1' }
pluginIndexSource_parse('host:./plugins', 'cube');          // { kind: 'host', path: './plugins' }
```
- Defined in salsa/src/plugins/plugin_index.ts:141