mirror of
https://github.com/denoland/deno.git
synced 2024-11-01 09:24:20 -04:00
63 lines
2.3 KiB
Markdown
63 lines
2.3 KiB
Markdown
# Deno Language Server
|
|
|
|
The Deno Language Server provides a server implementation of the
|
|
[Language Server Protocol](https://microsoft.github.io/language-server-protocol/)
|
|
which is specifically tailored to provide a _Deno_ view of code. It is
|
|
integrated into the command line and can be started via the `lsp` sub-command.
|
|
|
|
> :warning: The Language Server is highly experimental and far from feature
|
|
> complete. This document gives an overview of the structure of the language
|
|
> server.
|
|
|
|
## Structure
|
|
|
|
When the language server is started, a `LanguageServer` instance is created
|
|
which holds all of the state of the language server. It also defines all of the
|
|
methods that the client calls via the Language Server RPC protocol.
|
|
|
|
## Custom requests
|
|
|
|
The LSP currently supports the following custom requests. A client should
|
|
implement these in order to have a fully functioning client that integrates well
|
|
with Deno:
|
|
|
|
- `deno/cache` - This command will instruct Deno to attempt to cache a module
|
|
and all of its dependencies. If a `referrer` only is passed, then all
|
|
dependencies for the module specifier will be loaded. If there are values in
|
|
the `uris`, then only those `uris` will be cached.
|
|
|
|
It expects parameters of:
|
|
|
|
```ts
|
|
interface CacheParams {
|
|
referrer: TextDocumentIdentifier;
|
|
uris: TextDocumentIdentifier[];
|
|
}
|
|
```
|
|
- `deno/performance` - Requests the return of the timing averages for the
|
|
internal instrumentation of Deno.
|
|
|
|
It does not expect any parameters.
|
|
- `deno/reloadImportRegistries` - Reloads any cached responses from import
|
|
registries.
|
|
|
|
It does not expect any parameters.
|
|
- `deno/virtualTextDocument` - Requests a virtual text document from the LSP,
|
|
which is a read only document that can be displayed in the client. This allows
|
|
clients to access documents in the Deno cache, like remote modules and
|
|
TypeScript library files built into Deno. The Deno language server will encode
|
|
all internal files under the custom schema `deno:`, so clients should route
|
|
all requests for the `deno:` schema back to the `deno/virtualTextDocument`
|
|
API.
|
|
|
|
It also supports a special URL of `deno:/status.md` which provides a markdown
|
|
formatted text document that contains details about the status of the LSP for
|
|
display to a user.
|
|
|
|
It expects parameters of:
|
|
|
|
```ts
|
|
interface VirtualTextDocumentParams {
|
|
textDocument: TextDocumentIdentifier;
|
|
}
|
|
```
|