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utils.ts
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utils.ts
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/*
* Copyright (c) 2018 by Filestack
* Some rights reserved.
*
* 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
*
* http://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.
*/
/**
* Determine if a value is an Array
*
* @param {Object} val The value to test
* @returns {boolean} True if value is an Array, otherwise false
*/
export const isArray = (val: any[]) => Object.prototype.toString.call(val) === '[object Array]';
/**
* Determine if a value is an ArrayBuffer
*
* @param {Object} val The value to test
* @returns {boolean} True if value is an ArrayBuffer, otherwise false
*/
export const isArrayBuffer = (val: ArrayBuffer) => Object.prototype.toString.call(val) === '[object ArrayBuffer]';
/**
* Determine if a value is a view on an ArrayBuffer
*
* @param {Object} val The value to test
* @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false
*/
export const isArrayBufferView = (val: ArrayBufferView) => {
let result;
if (typeof ArrayBuffer !== 'undefined' && ArrayBuffer.isView) {
result = ArrayBuffer.isView(val);
} else {
result = val && val.buffer && val.buffer instanceof ArrayBuffer;
}
return result;
};
/**
* Determine if a value is an Object
*
* @param {Object} val The value to test
* @returns {boolean} True if value is an Object, otherwise false
*/
export const isObject = (val: any) => val !== null && typeof val === 'object';
/**
* Determine if a value is an Object
*
* @param {Object} val The value to test
* @returns {boolean} True if value is an Object, otherwise false
*/
export const isString = (val: any) => typeof val === 'string' || val instanceof String;
/**
* Determine if a value is a File
*
* @param {Object} val The value to test
* @returns {boolean} True if value is a File, otherwise false
*/
export const isFile = (val: File) => Object.prototype.toString.call(val) === '[object File]';
/**
* Determine if a value is a Blob
*
* @param {Object} val The value to test
* @returns {boolean} True if value is a Blob, otherwise false
*/
export const isBlob = (val: Blob) => Object.prototype.toString.call(val) === '[object Blob]';
/**
* Determine if a value is a URLSearchParams object
*
* @param {Object} val The value to test
* @returns {boolean} True if value is a URLSearchParams object, otherwise false
*/
export const isURLSearchParams = (val: URLSearchParams) => typeof URLSearchParams !== 'undefined' && val instanceof URLSearchParams;
/**
* Determine if value is form data
*
* @param val
*/
export const isFormData = val => typeof FormData !== 'undefined' && val instanceof FormData;
/**
* Trim excess whitespace off the beginning and end of a string
*
* @param {String} str The String to trim
* @returns {String} The String freed of excess whitespace
*/
export const trim = str => str.replace(/^\s*/, '').replace(/\s*$/, '');
export * from './utils.node';