lodash/lodash

Feb 6, 2017

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31 lines (28 sloc) 834 Bytes

      
        import baseGetTag from './.internal/baseGetTag.js'
      
        import isObjectLike from './isObjectLike.js'
      
        import isPlainObject from './isPlainObject.js'
      
        /**
      
         * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
      
         * `SyntaxError`, `TypeError`, or `URIError` object.
      
         *
      
         * @since 3.0.0
      
         * @category Lang
      
         * @param {*} value The value to check.
      
         * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
      
         * @example
      
         *
      
         * isError(new Error)
      
         * // => true
      
         *
      
         * isError(Error)
      
         * // => false
      
         */
      
        function isError(value) {
      
          if (!isObjectLike(value)) {
      
            return false
      
          }
      
          const tag = baseGetTag(value)
      
          return tag == '[object Error]' || tag == '[object DOMException]' ||
      
            (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value))
      
        }
      
        export default isError

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