message: Add util.isTypedArray
diff: @@ -466,6 +466,15 @@ export function isBuiltInObject(value) {
  return !!BUILTIN_OBJECT[objToString.call(value)];
  }
  +/**
  + * @memberOf module:zrender/core/util
  + * @param {*} value
  + * @return {boolean}
  + */
  +export function isTypedArray(value) {
  + return !!TYPED_ARRAY[objToString.call(value)];
  +}
  +
  /**
  * @memberOf module:zrender/core/util
  * @param {*} value
  