/**
 * Unit tests for the VS Code extension logic.
 * Tests the pure functions — not the DOM/widget rendering.
 */
/**
 * Validate that a vscode:// URI has the expected structure.
 */
declare function isValidVSCodeURI(uri: string): boolean;
/**
 * Build the vscode:// URI from connection info (mirrors hub apihandlers.py logic).
 */
declare function buildVSCodeURI(sshHost: string, sshUser: string): string;
/**
 * Build the setup command string (mirrors hub apihandlers.py logic).
 */
declare function buildSetupCmd(hubURL: string, token: string): string;
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