export { type AttrMap, type AttrValue, resolveAttrValue, } from "./resolveAttrValue";
import type { AttrMap } from "./resolveAttrValue";
/**
 * A plain attribute value — a string, number, or boolean.
 * - `true`  → sets the attribute with an empty string value (boolean attribute)
 * - `false` → removes the attribute
 * - string/number → sets the attribute to that value
 */
type PlainValue = string | number | boolean;
/**
 * Conditional attribute value (2-element tuple):
 *   [condition, value]
 * The attribute is only applied when `condition` is truthy.
 * When falsy, the attribute is removed from the element.
 */
type ConditionalValue = [condition: unknown, value: PlainValue];
/**
 * Ternary attribute value (3-element tuple):
 *   [condition, trueValue, falseValue]
 * Sets the attribute to `trueValue` when condition is truthy,
 * `falseValue` otherwise.
 */
type TernaryValue = [
    condition: unknown,
    trueValue: PlainValue,
    falseValue: PlainValue
];
export type { PlainValue, ConditionalValue, TernaryValue };
/**
 * Declarative, conditional attribute directive for lit-html templates.
 *
 * Accepts a map of attribute names to values. Values can be:
 *  - **plain**: always applied (`"aria-label": "Close"`)
 *  - **boolean**: `true` sets the attribute (empty value), `false` removes it
 *    (`disabled: isDisabled`)
 *  - **conditional** (2-element array): applied only when condition is truthy
 *    (`"aria-expanded": [isOpen, "true"]`)
 *  - **ternary** (3-element array): picks between two values
 *    (`"aria-pressed": [isActive, "true", "false"]`)
 *
 * Attributes whose conditions are falsy (or whose keys are removed between
 * renders) are automatically removed from the element.
 *
 * @example
 * ```ts
 * import { html } from "mates";
 * import { attr } from "mates";
 *
 * const isDisabled = false;
 * const isOpen = true;
 *
 * html`
 *   <button ${attr({
 *     "aria-label": "Submit form",
 *     "aria-expanded": [isOpen, "true", "false"],
 *     "aria-disabled": [isDisabled, "true"],
 *     "data-testid": "submit-btn",
 *     disabled: isDisabled,
 *     tabindex: 0,
 *   })}>
 *     Submit
 *   </button>
 * `;
 * ```
 */
export declare function attr(attrs: AttrMap): import("lit-html/directive").DirectiveResult<import("lit-html/directive").DirectiveClass>;
/** No-op — kept for backwards compatibility. */
export declare function removeAttr(_el: Element): void;
//# sourceMappingURL=attrDirective.d.ts.map