/**
 * Returns `true` if the prefix array appears at the start of the source array,
 * `false` otherwise.
 *
 * The complexity of this function is `O(prefix.length)`.
 *
 * @param source Source array to check.
 * @param prefix Prefix array to check for.
 * @returns `true` if the prefix array appears at the start of the source array,
 * `false` otherwise.
 *
 * @example Basic usage
 * ```ts
 * import { startsWith } from "@std/bytes/starts-with";
 * import { assertEquals } from "@std/assert";
 *
 * const source = new Uint8Array([0, 1, 2, 1, 2, 1, 2, 3]);
 * const prefix = new Uint8Array([0, 1, 2]);
 *
 * assertEquals(startsWith(source, prefix), true);
 * ```
 */
export declare function startsWith(source: Uint8Array, prefix: Uint8Array): boolean;
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