import type { Sink } from "../types/sink";
export declare const READ_ONLY_SINK_TAG = "readonly";
/**
 * A specialised sink for the "readonly" HTML attribute
 * @param source A present or future boolean value
 * @returns RMLTemplateExpression A template expression for the "readonly" attribute
 * @example <input type="button" readonly="${booleanValue}">
 * @example <input type="button" readonly="${booleanPromise}">
 * @example <input type="button" readonly="${booleanObservable}">
 */
export declare const ReadonlySink: Sink<HTMLInputElement>;
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