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Use when implementing Language Server Protocol features - diagnostics, completions, hover, go-to-definition, and editor integration
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| name | lsp |
| description | Use when implementing Language Server Protocol features - diagnostics, completions, hover, go-to-definition, and editor integration |
import { createConnection, TextDocuments, ProposedFeatures } from 'vscode-languageserver/node';
import { TextDocument } from 'vscode-languageserver-textdocument';
const connection = createConnection(ProposedFeatures.all);
const documents = new TextDocuments(TextDocument);
connection.onInitialize((params) => ({
capabilities: {
textDocumentSync: TextDocumentSyncKind.Incremental,
completionProvider: { resolveProvider: true },
hoverProvider: true,
definitionProvider: true,
diagnosticProvider: { interFileDependencies: false, workspaceDiagnostics: false }
}
}));
documents.onDidChangeContent((change) => {
validateDocument(change.document);
});
documents.listen(connection);
connection.listen();
onInitialize responseconnection.sendDiagnostics()| Provider | Purpose | Key Method |
|---|---|---|
completionProvider | Autocomplete suggestions | onCompletion |
hoverProvider | Tooltip on hover | onHover |
definitionProvider | Go-to-definition | onDefinition |
referencesProvider | Find all references | onReferences |
documentSymbolProvider | Outline/symbols | onDocumentSymbol |
codeActionProvider | Quick fixes | onCodeAction |
TextDocument.positionAt(offset) and offsetAt(position) for conversionsnull from handlers when no result availableDiagnosticSeverity.Error | Warning | Information | HintLocation for definitions, LocationLink for richer go-to-definition