/**
 * The value type accepted by the `attr()` directive for a single attribute.
 *
 * - `string | number`           — set the attribute to that value
 * - `boolean`                   — true → set to "", false → remove
 * - `null | undefined`          — remove the attribute
 * - `[condition, val]`          — conditional: set when truthy, remove when falsy
 * - `[condition, trueVal, falseVal]` — ternary
 */
export type AttrValue = string | number | boolean | null | undefined | [unknown, string | number | boolean] | [unknown, string | number | boolean, string | number | boolean];
/** A map of attribute names to their values. */
export type AttrMap = Record<string, AttrValue>;
/**
 * Resolve a single attribute value to either a set-action (with a string value)
 * or a remove-action.
 *
 * This is a pure function with zero dependencies — safe to import from anywhere.
 *
 * @example
 * resolveAttrValue("hello")        // { action: "set", value: "hello" }
 * resolveAttrValue(42)             // { action: "set", value: "42" }
 * resolveAttrValue(true)           // { action: "set", value: "" }
 * resolveAttrValue(false)          // { action: "remove" }
 * resolveAttrValue(null)           // { action: "remove" }
 * resolveAttrValue([true, "yes"])  // { action: "set", value: "yes" }
 * resolveAttrValue([false, "yes"]) // { action: "remove" }
 * resolveAttrValue([true, "a", "b"]) // { action: "set", value: "a" }
 */
export declare function resolveAttrValue(value: AttrValue): {
    action: "set";
    value: string;
} | {
    action: "remove";
};
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