All files / src/implementation type.ts

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/**
 * Copyright 2017 Google 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
 *
 *   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.
 */
 
/**
 * @return False if the object is undefined or null, true otherwise.
 */
export function isDef(p: any): boolean {
  return p != null;
}
 
export function isJustDef(p: any): boolean {
  return p !== void 0;
}
 
export function isFunction(p: any): boolean {
  return typeof p === 'function';
}
 
export function isObject(p: any): boolean {
  return typeof p === 'object';
}
 
export function isNonNullObject(p: any): boolean {
  return isObject(p) && p !== null;
}
 
export function isNonArrayObject(p: any): boolean {
  return isObject(p) && !Array.isArray(p);
}
 
export function isString(p: any): boolean {
  return typeof p === 'string' || p instanceof String;
}
 
export function isNumber(p: any): boolean {
  return typeof p === 'number' || p instanceof Number;
}
 
export function isNativeBlob(p: any): boolean {
  return isNativeBlobDefined() && p instanceof Blob;
}
 
export function isNativeBlobDefined(): boolean {
  return typeof Blob !== 'undefined';
}