Method createClient

src/api/providers/vscode-lm.ts:133–169

* Creates a language model chat client based on the provided selector. * * @param selector - Selector criteria to filter language model chat instances * @returns Promise resolving to the first matching language model chat instance * @throws Error when no matching models are found with the gi

(selector: vscode.LanguageModelChatSelector)

	 * const chatClient = await createClient(selector);
	 */
	async createClient(selector: vscode.LanguageModelChatSelector): Promise<vscode.LanguageModelChat> {
		try {
			const models = await vscode.lm.selectChatModels(selector)

			// Use first available model or create a minimal model object
			if (models && Array.isArray(models) && models.length > 0) {
				return models[0]
			}

			// Create a minimal model if no models are available
			return {
				id: "default-lm",
				name: "Default Language Model",
				vendor: "vscode",
				family: "lm",
				version: "1.0",
				maxInputTokens: 8192,
				sendRequest: async (_messages, _options, _token) => {
					// Provide a minimal implementation
					return {
						stream: (async function* () {
							yield new vscode.LanguageModelTextPart(
								"Language model functionality is limited. Please check VS Code configuration.",
							)
						})(),
						text: (async function* () {
							yield "Language model functionality is limited. Please check VS Code configuration."
						})(),
					}
				},
				countTokens: async () => 0,
			}
		} catch (error) {
			const errorMessage = error instanceof Error ? error.message : "Unknown error"
			throw new Error(`Roo Code <Language Model API>: Failed to select model: ${errorMessage}`)
		}
	}

	/**
	 * Creates and streams a message using the VS Code Language Model API.