message: Make more stuff const
diff: @@ -76,7 +76,7 @@ export class SemanticTokensFeature extends TextDocumentFeature<boolean | Propose
  public fillClientCapabilities(cap: ClientCapabilities): void {
  const capabilites: ClientCapabilities & Proposed.SemanticTokensClientCapabilities = cap as any;
  - let capability = ensure(ensure(capabilites, 'textDocument')!, 'semanticTokens')!;
  + const capability = ensure(ensure(capabilites, 'textDocument')!, 'semanticTokens')!;
  capability.dynamicRegistration = true;
  capability.tokenTypes = [
  Proposed.SemanticTokenTypes.comment,
  @@ -111,7 +111,7 @@ export class SemanticTokensFeature extends TextDocumentFeature<boolean | Propose
  public initialize(cap: ServerCapabilities, documentSelector: DocumentSelector): void {
  const capabilities: ServerCapabilities & Proposed.SemanticTokensServerCapabilities = cap as any;
  - let [id, options] = this.getRegistration(documentSelector, capabilities.semanticTokensProvider);
  + const [id, options] = this.getRegistration(documentSelector, capabilities.semanticTokensProvider);
  if (!id || !options) {
  return;
  }
  