/**
 * Props for a Base UI part whose `render` is a layout primitive (`Stack`,
 * `Group`, `Card`, ...). Layout props spread onto the part pass straight
 * through to the primitive, so the part accepts them too.
 *
 * Every key the Base UI part already ships stays Base UI's. A plain
 * intersection would narrow `className` and `render` to the primitive's
 * string and element forms, rejecting the state functions Base UI accepts.
 * The native attributes Base UI deliberately drops (`color`, `defaultValue`,
 * `defaultChecked`) stay dropped rather than returning through the primitive.
 */
export type WithLayoutProps<BaseProps, LayoutProps> = BaseProps & Omit<LayoutProps, keyof BaseProps | "color" | "defaultValue" | "defaultChecked">;
export type StyleProp<K extends keyof React.CSSProperties> = {
    property: K;
    values?: ReadonlyArray<React.CSSProperties[K]>;
    /** Keywords accepted alongside a number, each emitted as its own rule. */
    keywords?: readonly string[];
    /**
     * How the raw value becomes a length: multiplied by a token variable,
     * multiplied by `1px`, or used as-is (`"none"`, for keyword values).
     */
    unit: {
        variable: `--${string}`;
    } | "px" | "none";
};
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