feat(type): 新增类型函数

packages/type/src/index.ts

@@ -1,7 +1,7 @@
 /*
  * @Author: vyron
  * @Date: 2022-01-10 17:38:09
- * @LastEditTime: 2022-02-27 21:55:51
+ * @LastEditTime: 2022-03-02 17:15:31
  * @LastEditors: vyron
  * @Description: 判断数据类型
  * @FilePath: /v-utils/packages/type/src/index.ts
@@ -11,13 +11,56 @@
 export const toTypeString = (value: unknown): string =>
   Object.prototype.toString.call(value)
 
-// return value line String | Boolean | Number | Array | Object | Function | RegExp | Date
+// return value like String | Boolean | Number | Array | Object | Function | RegExp | Date
 export const toRawType = (value: unknown): string =>
   toTypeString(value).slice(8, -1)
 
+// 是否为String
+export const isString = (value: unknown): value is string =>
+  typeof value === 'string'
+
+// 是否为Boolean
+export const isBoolean = (value: unknown): value is boolean =>
+  typeof value === 'boolean'
+
+// 是否为Number
+export const isNumber = (value: unknown): value is number =>
+  typeof value === 'number'
+
+// 是否为Symbol
+export const isSymbol = (value: unknown): value is symbol =>
+  typeof value === 'symbol'
+
+// 是否为Null
+export const isNull = (value: unknown): value is null =>
+  toRawType(value) === 'Null'
+
+// 是否为Null
+export const isUndefined = (value: unknown): value is null =>
+  toRawType(value) === 'Undefined'
+
 // 是否为 Array
 export const isArray = Array.isArray
 
+// 是否为 Object
+export const isObject = (value: unknown): value is object =>
+  typeof value === 'object' && value !== null
+
+// 是否为Function
+export const isFunction = (value: unknown): boolean =>
+  typeof value === 'function'
+
+// 是否为RegExp
+export const isRegExp = (value: unknown): value is RegExp =>
+  toRawType(value) === 'RegExp'
+
+// 是否为Date
+export const isDate = (value: unknown): value is Date =>
+  toRawType(value) === 'Date'
+
+// 是否为 Arguments
+export const isArguments = (value: unknown): boolean => toRawType(value) === "Arguments"
+
 // 是否为 Map
 export const isMap = (value: unknown): value is Map<any, any> =>
   toRawType(value) === 'Map'
@@ -34,10 +77,48 @@ export const isSet = (value: unknown): value is Set<any> =>
 export const isWeakSet = (value: unknown): value is WeakSet<object> =>
   toRawType(value) === 'WeakSet'
 
-// 是否为 Object
-export const isObject = (value: unknown): value is object =>
-  typeof value === 'object' && value !== null
+// 是否为NaN
+export const isNaN = (value: unknown): boolean => value !== value
+
+// 是否为null或undefined
+export const isNil = (value: unknown): boolean => {
+  const rawType = toRawType(value)
+  return rawType === 'Null' || rawType === 'Undefined'
+}
+
+// 判断是否为有效的数组长度
+const MAX_SAFE_INTEGER = 9007199254740991
+export const isLength = (value: unknown): boolean => isNumber(value) && value >= 0 && value <= MAX_SAFE_INTEGER
+
+// 判断是否为类数组
+export const isArrayLike = (value: unknown): boolean => value != null && !isFunction(value) && isLength((value as Array<any>).length)
+
+// 是否为原型
+export const isPrototype = (value: unknown): boolean => {
+  const Constructor = value && (value as any).constructor
+  const proto = (typeof Constructor === 'function' && Constructor.prototype) || Object.prototype
+  return value === proto
+}
+
+/**
+ * 判断 value 是否为空对象,数组,map 或 set
+ * @param value 
+ */
+export const isEmpty = (value: unknown): boolean => {
+  if (value == null) return true
+  const rawType = toRawType(value)
+  if (rawType === "Set" || rawType === "Map") {
+    return !(value as (Set<any> | Map<any, any>)).size
+  } else if (isArrayLike(value) && (isArray(value) || isArguments(value) || typeof value === "string")) {
+    return !(value as (string | Array<unknown>)).length
+  } else if (isPrototype(value)) {
+    return !Object.keys(value as object).length
+  }
+  for (const key in (value as object)) {
+    if (!Object.prototype.hasOwnProperty.call(value, key)) {
+      return false
+    }
+  }
+  return true
+}
 
-// 是否为字符串
-export const isString = (value: unknown): value is string =>
-  typeof value === 'string'