/**
 * JavaScript runtime env.
 *
 * @category Env
 * @category Package : @augment-vir/common
 * @package [`@augment-vir/common`](https://www.npmjs.com/package/@augment-vir/common)
 * @see
 *  - {@link currentRuntimeEnv}
 *  - {@link isRuntimeEnv}
 *  - {@link perEnv}
 */
export declare enum RuntimeEnv {
    Node = "node",
    Web = "web"
}
/**
 * Determine the current {@link RuntimeEnv} value. Usually you shouldn't need to call this, you can
 * simply import {@link currentRuntimeEnv} directly.
 *
 * @category Env
 * @category Package : @augment-vir/common
 * @package [`@augment-vir/common`](https://www.npmjs.com/package/@augment-vir/common)
 */
export declare function determineRuntimeEnv(): RuntimeEnv;
/**
 * The current {@link RuntimeEnv}.
 *
 * @category Env
 * @category Package : @augment-vir/common
 * @package [`@augment-vir/common`](https://www.npmjs.com/package/@augment-vir/common)
 * @see
 *  - {@link RuntimeEnv}
 *  - {@link isRuntimeEnv}
 *  - {@link perEnv}
 */
export declare const currentRuntimeEnv: RuntimeEnv;
/**
 * Checks if the given {@link RuntimeEnv} value is the current {@link RuntimeEnv} value.
 *
 * @category Env
 * @category Package : @augment-vir/common
 * @returns `true` if the given {@link RuntimeEnv} is the current {@link RuntimeEnv}.
 * @package [`@augment-vir/common`](https://www.npmjs.com/package/@augment-vir/common)
 * @see
 *  - {@link RuntimeEnv}
 *  - {@link currentRuntimeEnv}
 *  - {@link perEnv}
 */
export declare function isRuntimeEnv(itItThisEnv: RuntimeEnv): boolean;
/**
 * Throw this Error to indicate that something was attempted that cannot be done in the current
 * runtime.
 *
 * @category Env
 * @category Package : @augment-vir/common
 * @package [`@augment-vir/common`](https://www.npmjs.com/package/@augment-vir/common)
 */
export declare class RuntimeEnvError extends Error {
    readonly name = "RuntimeEnvError";
}
/**
 * Requires defining an object of functions for all possible {@link RuntimeEnv} values and then only
 * calls the function for the current runtime.
 *
 * @category Env
 * @category Package : @augment-vir/common
 * @package [`@augment-vir/common`](https://www.npmjs.com/package/@augment-vir/common)
 * @see
 *  - {@link RuntimeEnv}
 *  - {@link currentRuntimeEnv}
 *  - {@link isRuntimeEnv}
 */
export declare function perEnv<T>(perEnv: Record<RuntimeEnv, () => T>): T;
/**
 * Determines if the current code is being executed within a playwright test.
 *
 * @category Env
 * @category Package : @augment-vir/common
 * @package [`@augment-vir/common`](https://www.npmjs.com/package/@augment-vir/common)
 */
export declare function isInsidePlaywrightTest(): boolean;