export interface DevicePreset {
    /** Requested device width; the hosted physical screen may be widened to its minimum. */
    width: number;
    /** Requested device height, used for the hosted physical screen. */
    height: number;
    /** Mobile identity; enables emulation only when the hosted lane explicitly opts in. */
    isMobile: boolean;
    /** Requested DPR; applied on hosted mobile lanes only with opt-in CDP emulation. */
    deviceScaleFactor: number;
}
/**
 * Named presets. Keys are the public vocabulary for `execution.desktop.device` and (later) a
 * per-persona `device`. Values are copied verbatim from the in-house ui-sim screen tables;
 * the per-line notes record where the two reference sims agree vs. diverge.
 */
export declare const DEVICE_PRESETS: {
    readonly mobile: {
        readonly width: 414;
        readonly height: 896;
        readonly isMobile: true;
        readonly deviceScaleFactor: 3;
    };
    readonly "small-mobile": {
        readonly width: 360;
        readonly height: 740;
        readonly isMobile: true;
        readonly deviceScaleFactor: 3;
    };
    readonly "narrow-mobile": {
        readonly width: 320;
        readonly height: 700;
        readonly isMobile: true;
        readonly deviceScaleFactor: 2;
    };
    readonly tablet: {
        readonly width: 820;
        readonly height: 1180;
        readonly isMobile: false;
        readonly deviceScaleFactor: 2;
    };
    readonly desktop: {
        readonly width: 1440;
        readonly height: 950;
        readonly isMobile: false;
        readonly deviceScaleFactor: 1;
    };
    readonly wide: {
        readonly width: 1920;
        readonly height: 1080;
        readonly isMobile: false;
        readonly deviceScaleFactor: 1;
    };
};
export type DevicePresetName = keyof typeof DEVICE_PRESETS;
/**
 * Default device for a run that does not declare one. `desktop` (1440x950) is the median
 * first-run laptop screen — the in-house desktop default, within 10px of humanish's own
 * pre-existing run.ts desktop surface. `wide` (1920x1080), the most-common external monitor, is
 * one keystroke away (`execution.desktop.device: wide`) but is deliberately not the default,
 * because the median device a first-time user arrives on is a laptop, not a 1080p monitor.
 */
export declare const DEFAULT_DEVICE_PRESET: DevicePresetName;
/** The ordered list of preset names, for validation + help text. */
export declare const DEVICE_PRESET_NAMES: DevicePresetName[];
export declare function isDevicePresetName(value: unknown): value is DevicePresetName;
/** Resolve a preset name (or undefined) to its preset, falling back to the default. */
export declare function resolveDevicePreset(name: DevicePresetName | undefined): DevicePreset;