/**
 *
 * Copyright 2020-2026 Splunk Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
export declare function generateId(bits: number): string;
export declare function limitLen(s: string, cap: number): string;
/**
 * Get plugin config from user provided value
 *
 * @template {Object|undefined} T
 * @param value Value given by user
 * @param defaults Default value
 * @param defaultDisable If undefined by user should mean false
 */
export declare function getPluginConfig<T>(value: T | boolean | undefined, defaults?: T, defaultDisable?: T | boolean): false | T;
/**
 * Type guard that checks if value is function (and acts as user-defined type guard)
 *
 * @param value Value to check
 * @returns is function
 */
export declare function isFunction(value: unknown): value is (...args: unknown[]) => unknown;
export declare function isIframe(): boolean;
/**
 * Wrap function while keeping the toString calling the original as some frameworks
 * use it to determine if the function's native or polyfilled
 *
 * Example:
 * https://github.com/vuejs/vue/blob/0603ff695d2f41286239298210113cbe2b209e28/src/core/util/env.js#L58
 * https://github.com/vuejs/vue/blob/0603ff695d2f41286239298210113cbe2b209e28/src/core/util/next-tick.js#L42
 *
 * @param nodule Target object
 * @param name Property to patch
 * @param wrapper Wrapper
 */
export declare function wrapNatively<Nodule extends object, FieldName extends keyof Nodule>(nodule: Nodule, name: FieldName, wrapper: (original: Nodule[FieldName]) => Nodule[FieldName]): void;
/**
 * Get the original version of function (without all of the shimmer wrappings)
 */
export declare function getOriginalFunction<T extends CallableFunction>(func: T): T;
/**
 * Wait for a variable to be set globally
 *
 * @param {string} identifier Name of the variable (window[identifier])
 * @param {function} callback Fired when such value is available
 * @returns {function} cleanup to call in disable (in case not defined before instrumentation is disabled)
 */
export declare function waitForGlobal<T = unknown>(identifier: string, callback: (value: T) => void): () => void;