FlexTools

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类型检查 ​

typescript
import { <函数名称> } from "flex-tools"
import { <函数名称> } from "flex-tools/typecheck"

inheritedOf ​

判断cls是否继承自baseClass

typescript
inheritedOf(cls: Class, baseClass:Class):boolean

isAsyncFunction ​

判断一个函数是否是异步函数。

typescript
isAsyncFunction(fn:any):boolean

isClass ​

判断一个对象是否是一个类

typescript
isClass(cls:any):boolean

class MyClass{}

isInstance(new MyClass())= true
isInstance({})= false
isInstance(Symbol())= false
isInstance(new Set())= false
isInstance(new Map())= false
isInstance(new WeakMap())= false
isInstance(new WeakSet())= false
isInstance(1)= false
isInstance(null)= false
isInstance(undefined)= false
isInstance([1])= false
isInstance(A)= false

isInstance ​

判断值是否是类的实例

typescript
function isInstance(obj:any):boolean

isGeneratorFunction ​

判断是否是一个生成器函数

typescript
isGeneratorFunction(fn:any):boolean

isInteger ​

判断一个字符串是否是一个整形数。

typescript
isInteger(value:any):boolean

isPlainObject ​

判断一个对象是否是原始的对象{}

typescript
isPlainObject(obj:any):boolean

isNothing ​

判断变量是否是为空

typescript
isNothing(value:any):boolean

isNothing("") == true
isNothing(null) == true
isNothing(undefined) == true
isNothing({}) == true
isNothing([]) == true
isNothing(new Set()) == true
isNothing(new Map()) == true

isNumber ​

判断是否是数字，可以判断字符串内容是否是数字。

typescript
isNumber(value:any):boolean

isNumber(122) == true
isNumber("122") == true
isNumber("122.1") == true
// 严格模式下
isNumber("122",true) == false
isNumber("122.1",true) == false

isSerializable ​

判断对象是否可以被序列化

typescript
isSerializable(value:any):boolean

canIterable ​

判断指定对象是否可以迭代

typescript
canIterable(obj:any):boolean

isPrimitive ​

判断值是否是原始值类型，即值为string | number | boolean | symbol | bigInt | null | undefined

isCollection ​

当值是Array,Set,Map,{},WeakMap,WeakSet时返回true