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/** * @name isBoolean * @summary Tests for a boolean value. * @description * Checks to see if the input value is a JavaScript boolean. * @example * <BR> * * ```javascript * import { isBoolean } from 'https://deno.land/x/polkadot@0.2.33/util/mod.ts'; * * isBoolean(false); // => true * ``` */export function isBoolean (value: unknown): value is boolean {  return typeof value === 'boolean';}