Language server fallback not working - multiple servers run simultaneously

[austin-karren]

Problem

The current language server array configuration runs multiple servers simultaneously instead of implementing fallback behavior. When configured with:

{
  "languages": {
    "TypeScript": {
      "language_servers": ["tsgo", "vtsls"]
    }
  }
}

Both tsgo AND vtsls run at the same time, waisting resources and duplicating intellisense.

Expected Behavior

Should use tsgo for supported features, then fallback to vtsls for unsupported features (true primary/secondary behavior).

Current Behavior

Both servers run in parallel.

Use Case

I want fast parsing (tsgo) with full feature fallback (vtsls/typescript-language-server) since no single LS works perfectly.

[austin-karren]

An alternative would be to update the README language to reflect that Zed doesn't support true fallback behavior, instead that you will be running both language servers simultaneously. When configured with:

{
  "languages": {
    "TypeScript": {
      "language_servers": ["tsgo", "vtsls"]
    }
  }
}

[SimonSimCity]

Related to #19. There a user noted that you can prefix the name of the language-server with an exclamation mark in order to actually fall back. I haven't excessively tried this, but maybe mentioning it here helps someone.