diff --git a/func/after.d.ts b/func/after.d.ts
index 226ae63..3b0c5db 100644
--- a/func/after.d.ts
+++ b/func/after.d.ts
@@ -4,7 +4,7 @@
  * @param callback 回调
  * @param context 上下文
  */
-export declare function after<C>(count: number, callback: (this: C, ...args: any[]) => any, context?: C): (this: any,...args: any[]) => any;
+export declare function after<C = any>(count: number, callback: (this: C, ...args: any[]) => any, context?: C): (this: any,...args: any[]) => any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/arrayEach.d.ts b/func/arrayEach.d.ts
index bc0238b..8eebbf5 100644
--- a/func/arrayEach.d.ts
+++ b/func/arrayEach.d.ts
@@ -4,8 +4,8 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function arrayEach<T, C>(list: T[] | ArrayLike<T>, iterate: (this: C, item: T, index: number, list: T[]) => void, context?: C): void;
-export declare function arrayEach<C>(obj: any[], iterate: (this: C, item: any, index: number, obj: any) => void, context?: C): void;
+export declare function arrayEach<T, C = any>(list: T[] | ArrayLike<T>, iterate: (this: C, item: T, index: number, list: T[]) => void, context?: C): void;
+export declare function arrayEach<C = any>(obj: any[], iterate: (this: C, item: any, index: number, obj: any) => void, context?: C): void;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/before.d.ts b/func/before.d.ts
index a98db2b..d6772bb 100644
--- a/func/before.d.ts
+++ b/func/before.d.ts
@@ -4,7 +4,7 @@
  * @param callback 回调
  * @param context 上下文
  */
-export declare function before<C>(count: number, callback: (this: C, rests: any[], ...args: any[]) => any, context?: C): (this: any, ...args: any[]) => any;
+export declare function before<C = any>(count: number, callback: (this: C, rests: any[], ...args: any[]) => any, context?: C): (this: any, ...args: any[]) => any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/bind.d.ts b/func/bind.d.ts
index 12baab2..0ab3cd4 100644
--- a/func/bind.d.ts
+++ b/func/bind.d.ts
@@ -4,7 +4,7 @@
  * @param context 上下文
  * @param params 额外的参数
  */
-export declare function bind<C>(callback: (this: C, ...args: any[]) => any, context?: C, ...params: any[]): (this: any, ...args: any[]) => any;
+export declare function bind<C = any>(callback: (this: C, ...args: any[]) => any, context?: C, ...params: any[]): (this: any, ...args: any[]) => any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/countBy.d.ts b/func/countBy.d.ts
index 5dfb6df..5bba5c1 100644
--- a/func/countBy.d.ts
+++ b/func/countBy.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 回调/属性
  * @param context 上下文
  */
-export declare function countBy<T, C>(list: T[], iterate: string | number | ((this: C, item: T, index: number, list: T[]) => string | number), context?: C): { [key: string]: number };
+export declare function countBy<T, C = any>(list: T[], iterate: string | number | ((this: C, item: T, index: number, list: T[]) => string | number), context?: C): { [key: string]: number };
 
 /**
  * 集合分组统计,返回各组中对象的数量统计
@@ -12,7 +12,7 @@ export declare function countBy<T, C>(list: T[], iterate: string | number | ((th
  * @param iterate 回调/属性
  * @param context 上下文
  */
-export declare function countBy<T, C>(obj: T, iterate: string | number | ((this: C, item: any, key: string, obj: T) => string | number), context?: C): { [key: string]: number };
+export declare function countBy<T, C = any>(obj: T, iterate: string | number | ((this: C, item: any, key: string, obj: T) => string | number), context?: C): { [key: string]: number };
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/debounce.d.ts b/func/debounce.d.ts
index cdf402b..120053c 100644
--- a/func/debounce.d.ts
+++ b/func/debounce.d.ts
@@ -15,7 +15,7 @@ export interface DebounceOptions {
  * @param wait 毫秒
  * @param options 可选参数
  */
-export declare function debounce<C>(callback: (this: C, ...args: any[]) => any, wait: number, options?: DebounceOptions): (this: C, ...args: any[]) => any;
+export declare function debounce<C = any>(callback: (this: C, ...args: any[]) => any, wait: number, options?: DebounceOptions): (this: C, ...args: any[]) => any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/each.d.ts b/func/each.d.ts
index f15ee5e..8ff0ecd 100644
--- a/func/each.d.ts
+++ b/func/each.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function each<T, C>(list: T[] | ArrayLike<T>, iterate: (this: C, item: T, index: number, list: T[]) => void, context?: CSSKeyframeRule): void;
+export declare function each<T, C = any>(list: T[] | ArrayLike<T>, iterate: (this: C, item: T, index: number, list: T[]) => void, context?: CSSKeyframeRule): void;
 
 /**
  * 通用迭代器
@@ -12,7 +12,7 @@ export declare function each<T, C>(list: T[] | ArrayLike<T>, iterate: (this: C,
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function each<T, C>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => void, context?: C): void;
+export declare function each<T, C = any>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => void, context?: C): void;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/eachTree.d.ts b/func/eachTree.d.ts
index 11145f1..c2a820e 100644
--- a/func/eachTree.d.ts
+++ b/func/eachTree.d.ts
@@ -9,9 +9,9 @@ export interface EachTreeOptions {
  * @param {Object} options {children: 'children'}
  * @param {Object} context 上下文
  */
-export declare function eachTree<T, C>(list: T[], iterate: (this: C, item: T, index: number, items: T[], path: string[], parent: T, nodes: T[]) => void, options?: EachTreeOptions, context?: C): void;
-export declare function eachTree<C>(list: any[], iterate: (this: C, item: any, index: number, items: any[], path: string[], parent: any, nodes: any[]) => void, options?: EachTreeOptions, context?: C): void;
-export declare function eachTree<C>(list: any, iterate: (this: C, item: any, index: number, items: any, path: string[], parent: any, nodes: any) => void, options?: EachTreeOptions, context?: C): void;
+export declare function eachTree<T, C = any>(list: T[], iterate: (this: C, item: T, index: number, items: T[], path: string[], parent: T, nodes: T[]) => void, options?: EachTreeOptions, context?: C): void;
+export declare function eachTree<C = any>(list: any[], iterate: (this: C, item: any, index: number, items: any[], path: string[], parent: any, nodes: any[]) => void, options?: EachTreeOptions, context?: C): void;
+export declare function eachTree<C = any>(list: any, iterate: (this: C, item: any, index: number, items: any, path: string[], parent: any, nodes: any) => void, options?: EachTreeOptions, context?: C): void;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/every.d.ts b/func/every.d.ts
index 832cf31..3967031 100644
--- a/func/every.d.ts
+++ b/func/every.d.ts
@@ -5,7 +5,7 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function every<T, C>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): boolean;
+export declare function every<T, C = any>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): boolean;
 
 /**
  * 对象中的值中的每一项运行给定函数,如果该函数对每一项都返回 true,则返回 true,否则返回 false
@@ -13,7 +13,7 @@ export declare function every<T, C>(list: T[], iterate: (this: C, item: T, index
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function every<T, C>(list: T, iterate: (this: C, item: any, key: string, list: T) => boolean, context?: C): boolean;
+export declare function every<T, C = any>(list: T, iterate: (this: C, item: any, key: string, list: T) => boolean, context?: C): boolean;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/filter.d.ts b/func/filter.d.ts
index 6b74740..5f14ae6 100644
--- a/func/filter.d.ts
+++ b/func/filter.d.ts
@@ -5,7 +5,7 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function filter<T, C>(array: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): T[];
+export declare function filter<T, C = any>(array: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): T[];
 
 /**
  * 查找匹配第一条数据
@@ -13,7 +13,7 @@ export declare function filter<T, C>(array: T[], iterate: (this: C, item: T, ind
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function filter<T, C>(obj: T, iterate: (this: C, item: any, key: string, list: T) => boolean, context?: C): any;
+export declare function filter<T, C = any>(obj: T, iterate: (this: C, item: any, key: string, list: T) => boolean, context?: C): any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/filterTree.d.ts b/func/filterTree.d.ts
index 4fbed8e..cb3a047 100644
--- a/func/filterTree.d.ts
+++ b/func/filterTree.d.ts
@@ -10,7 +10,7 @@ export interface FilterTreeOptions {
  * @param {Object} options {children: 'children'}
  * @param {Object} context 上下文
  */
-export declare function filterTree<T, C>(list: T[], iterate: (this: C, item: T, index: number, items: T[], path: string[], parent: T, nodes: T[]) => boolean, options?: FilterTreeOptions, context?: C): T[];
+export declare function filterTree<T, C = any>(list: T[], iterate: (this: C, item: T, index: number, items: T[], path: string[], parent: T, nodes: T[]) => boolean, options?: FilterTreeOptions, context?: C): T[];
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/find.d.ts b/func/find.d.ts
index d21b1fc..3c4e2f0 100644
--- a/func/find.d.ts
+++ b/func/find.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function find<T, C>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): T;
+export declare function find<T, C = any>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): T;
 
 /**
  * 从左至右遍历，匹配最近的一条数据
@@ -12,7 +12,7 @@ export declare function find<T, C>(list: T[], iterate: (this: C, item: T, index:
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function find<T, C>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => boolean, context?: C): any;
+export declare function find<T, C = any>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => boolean, context?: C): any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/findIndexOf.d.ts b/func/findIndexOf.d.ts
index da6d59b..3cfaee5 100644
--- a/func/findIndexOf.d.ts
+++ b/func/findIndexOf.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 迭代器
  * @param context 上下文
  */
-export declare function findIndexOf<T, C>(list: T[], iterate: (this: C, item: T, index: any, obj: T[]) => boolean, context?: C): number;
+export declare function findIndexOf<T, C = any>(list: T[], iterate: (this: C, item: T, index: any, obj: T[]) => boolean, context?: C): number;
 
 /**
  * 返回对象第一个索引值
@@ -12,7 +12,7 @@ export declare function findIndexOf<T, C>(list: T[], iterate: (this: C, item: T,
  * @param iterate 迭代器
  * @param context 上下文
  */
-export declare function findIndexOf<T, C>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => boolean, context?: C): number;
+export declare function findIndexOf<T, C = any>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => boolean, context?: C): number;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/findKey.d.ts b/func/findKey.d.ts
index aa3b693..e4bca43 100644
--- a/func/findKey.d.ts
+++ b/func/findKey.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function findKey<T, C>(list: T[], iterate: (this: C, item: T, index: number, list: T[])=> boolean, context?: C): number;
+export declare function findKey<T, C = any>(list: T[], iterate: (this: C, item: T, index: number, list: T[])=> boolean, context?: C): number;
 
 /**
  * 查找匹配第一条数据的键
@@ -12,7 +12,7 @@ export declare function findKey<T, C>(list: T[], iterate: (this: C, item: T, ind
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function findKey<T, C>(obj: T, iterate: (this: C, item: any, key: string, obj: T)=> boolean, context?: C): any;
+export declare function findKey<T, C = any>(obj: T, iterate: (this: C, item: any, key: string, obj: T)=> boolean, context?: C): any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/findLast.d.ts b/func/findLast.d.ts
index d4c9183..28b3f04 100644
--- a/func/findLast.d.ts
+++ b/func/findLast.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function findLast<T, C>(array: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): T;
+export declare function findLast<T, C = any>(array: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): T;
 
 /**
  * 从右至左遍历，匹配最近的一条数据
@@ -12,7 +12,7 @@ export declare function findLast<T, C>(array: T[], iterate: (this: C, item: T, i
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function findLast<T, C>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => boolean, context?: C): any;
+export declare function findLast<T, C = any>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => boolean, context?: C): any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/findLastIndexOf.d.ts b/func/findLastIndexOf.d.ts
index 8049cee..5326f22 100644
--- a/func/findLastIndexOf.d.ts
+++ b/func/findLastIndexOf.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 迭代器
  * @param context 上下文
  */
-export declare function findLastIndexOf<T, C>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): number;
+export declare function findLastIndexOf<T, C = any>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => boolean, context?: C): number;
 
 /**
  * 从最后开始的索引值,返回对象第一个索引值
@@ -12,7 +12,7 @@ export declare function findLastIndexOf<T, C>(list: T[], iterate: (this: C, item
  * @param iterate 迭代器
  * @param context 上下文
  */
-export declare function findLastIndexOf<C>(obj: any, iterate: (this: C, item: any, key: string, obj: any) => boolean, context?: C): number;
+export declare function findLastIndexOf<C = any>(obj: any, iterate: (this: C, item: any, key: string, obj: any) => boolean, context?: C): number;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/findTree.d.ts b/func/findTree.d.ts
index b895404..dcf3249 100644
--- a/func/findTree.d.ts
+++ b/func/findTree.d.ts
@@ -18,7 +18,7 @@ export interface FindTreeOptions {
  * @param {Object} options {children: 'children'}
  * @param {Object} context 上下文
  */
-export declare function findTree<T, C>(list: T[], iterate: (this: C, item: T, index: number, items: T[], path: string[], parent: T, nodes: T[]) => boolean, options?: FindTreeOptions, context?: C): FindTerrResult<T>;
+export declare function findTree<T, C = any>(list: T[], iterate: (this: C, item: T, index: number, items: T[], path: string[], parent: T, nodes: T[]) => boolean, options?: FindTreeOptions, context?: C): FindTerrResult<T>;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/forOf.d.ts b/func/forOf.d.ts
index 8b97f9c..43ae1b7 100644
--- a/func/forOf.d.ts
+++ b/func/forOf.d.ts
@@ -2,7 +2,7 @@
  * 已废弃，被 some, every 替换
  * @deprecated
  */
-export declare function forOf<C>(obj: any, iterate: (this: C, item: any, index: any, obj: any) => boolean, context?: C): void;
+export declare function forOf<C = any>(obj: any, iterate: (this: C, item: any, index: any, obj: any) => boolean, context?: C): void;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/groupBy.d.ts b/func/groupBy.d.ts
index 51aa951..ea0164d 100644
--- a/func/groupBy.d.ts
+++ b/func/groupBy.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 回调/对象属性
  * @param context 上下文
  */
-export declare function groupBy<T, C>(list: T[], iterate: string | number | ((this: C, item: T, index: number, obj: T[]) => string | number), context?: C): { [key: string]: T[] };
+export declare function groupBy<T, C = any>(list: T[], iterate: string | number | ((this: C, item: T, index: number, obj: T[]) => string | number), context?: C): { [key: string]: T[] };
 
 /**
  * 集合分组,默认使用键值分组,如果有 iterate 则使用结果进行分组
@@ -12,7 +12,7 @@ export declare function groupBy<T, C>(list: T[], iterate: string | number | ((th
  * @param iterate 回调/对象属性
  * @param context 上下文
  */
-export declare function groupBy<T, C>(obj: T, iterate: string | number | ((this: C, item: any, key: string, obj: T) => string | number), context?: C): { [key: string]: any[] };
+export declare function groupBy<T, C = any>(obj: T, iterate: string | number | ((this: C, item: any, key: string, obj: T) => string | number), context?: C): { [key: string]: any[] };
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/lastArrayEach.d.ts b/func/lastArrayEach.d.ts
index 3c73420..dbd32b4 100644
--- a/func/lastArrayEach.d.ts
+++ b/func/lastArrayEach.d.ts
@@ -4,10 +4,10 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function lastArrayEach<T, C>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => void, context?: C): void;
-export declare function lastArrayEach<T, C>(list: T, iterate: (this: C, item: any, index: number, list: T) => void, context?: C): void;
-export declare function lastArrayEach<C>(list: any[], iterate: (this: C, item: any, index: number, list: any[]) => void, context?: C): void;
-export declare function lastArrayEach<C>(list: any, iterate: (this: C, item: any, index: number, list: any) => void, context?: C): void;
+export declare function lastArrayEach<T, C = any>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => void, context?: C): void;
+export declare function lastArrayEach<T, C = any>(list: T, iterate: (this: C, item: any, index: number, list: T) => void, context?: C): void;
+export declare function lastArrayEach<C = any>(list: any[], iterate: (this: C, item: any, index: number, list: any[]) => void, context?: C): void;
+export declare function lastArrayEach<C = any>(list: any, iterate: (this: C, item: any, index: number, list: any) => void, context?: C): void;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/lastEach.d.ts b/func/lastEach.d.ts
index cd5eb8d..6b99ade 100644
--- a/func/lastEach.d.ts
+++ b/func/lastEach.d.ts
@@ -4,10 +4,10 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function lastEach<T, C>(list: T[], iterate: (this: C, item: T, index: number, list: T) => void, context?: C): void;
-export declare function lastEach<T, C>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => void, context?: C): void;
-export declare function lastEach<C>(obj: any[], iterate: (this: C, item: any, key: string, obj: any[]) => void, context?: C): void;
-export declare function lastEach<C>(obj: any, iterate: (this: C, item: any, key: string, obj: any) => void, context?: C): void;
+export declare function lastEach<T, C = any>(list: T[], iterate: (this: C, item: T, index: number, list: T) => void, context?: C): void;
+export declare function lastEach<T, C = any>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => void, context?: C): void;
+export declare function lastEach<C = any>(obj: any[], iterate: (this: C, item: any, key: string, obj: any[]) => void, context?: C): void;
+export declare function lastEach<C = any>(obj: any, iterate: (this: C, item: any, key: string, obj: any) => void, context?: C): void;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/lastForOf.d.ts b/func/lastForOf.d.ts
index 60b33ad..f3b1730 100644
--- a/func/lastForOf.d.ts
+++ b/func/lastForOf.d.ts
@@ -2,7 +2,7 @@
  * 已废弃
  * @deprecated
  */
-export declare function lastForOf<C>(obj: any, iterate: (this: C, item: any, index: any, obj: any) => boolean, context?: C): void;
+export declare function lastForOf<C = any>(obj: any, iterate: (this: C, item: any, index: any, obj: any) => boolean, context?: C): void;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/lastObjectEach.d.ts b/func/lastObjectEach.d.ts
index 295f708..d8e6560 100644
--- a/func/lastObjectEach.d.ts
+++ b/func/lastObjectEach.d.ts
@@ -4,8 +4,8 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function lastObjectEach<T, C>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => void, context?: C): void;
-export declare function lastObjectEach<C>(obj: any, iterate: (this: C, item: any, key: string, obj: any) => void, context?: C): void;
+export declare function lastObjectEach<T, C = any>(obj: T, iterate: (this: C, item: any, key: string, obj: T) => void, context?: C): void;
+export declare function lastObjectEach<C = any>(obj: any, iterate: (this: C, item: any, key: string, obj: any) => void, context?: C): void;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/map.d.ts b/func/map.d.ts
index 2999277..f8b65e9 100644
--- a/func/map.d.ts
+++ b/func/map.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function map<T, U, C>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => U, context?: C): U[];
+export declare function map<T, U, C = any>(list: T[], iterate: (this: C, item: T, index: number, list: T[]) => U, context?: C): U[];
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/mapTree.d.ts b/func/mapTree.d.ts
index 5607995..bc46002 100644
--- a/func/mapTree.d.ts
+++ b/func/mapTree.d.ts
@@ -10,9 +10,9 @@ export interface MapTreeOptions {
  * @param {Object} options {children: 'children', mapChildren: 'children}
  * @param {Object} context 上下文
  */
-export declare function mapTree<T, U, C>(array: T[], iterate: (this: C, item: T, index: number, items: T[], path: string[], parent: T, nodes: T[]) => U, options?: MapTreeOptions, context?: C): U[];
-export declare function mapTree<U, C>(array: any[], iterate: (this: C, item: any, index: number, items: any[], path: string[], parent: any, nodes: any[]) => U, options?: MapTreeOptions, context?: C): U[];
-export declare function mapTree<U, C>(array: any, iterate: (this: C, item: any, index: number, items: any, path: string[], parent: any, nodes: any) => U, options?: MapTreeOptions, context?: C): U[];
+export declare function mapTree<T, U, C = any>(array: T[], iterate: (this: C, item: T, index: number, items: T[], path: string[], parent: T, nodes: T[]) => U, options?: MapTreeOptions, context?: C): U[];
+export declare function mapTree<U, C = any>(array: any[], iterate: (this: C, item: any, index: number, items: any[], path: string[], parent: any, nodes: any[]) => U, options?: MapTreeOptions, context?: C): U[];
+export declare function mapTree<U, C = any>(array: any, iterate: (this: C, item: any, index: number, items: any, path: string[], parent: any, nodes: any) => U, options?: MapTreeOptions, context?: C): U[];
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/once.d.ts b/func/once.d.ts
index bfebf2c..c2fea54 100644
--- a/func/once.d.ts
+++ b/func/once.d.ts
@@ -4,7 +4,7 @@
  * @param context 上下文
  * @param params 额外的参数
  */
-export declare function once<S, C>(callback: (this: S, ...args: any[]) => any, context?: C, ...params: any[]): (this: S | C, ...args: any[]) => any;
+export declare function once<S, C = any>(callback: (this: S, ...args: any[]) => any, context?: C, ...params: any[]): (this: S | C, ...args: any[]) => any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/orderBy.d.ts b/func/orderBy.d.ts
index c623948..f2f0262 100644
--- a/func/orderBy.d.ts
+++ b/func/orderBy.d.ts
@@ -11,7 +11,7 @@ export type OrderByFieldConfs<T, C> = null | string | any[][] | OrderBySortConfs
  * @param fieldConfs 排序规则
  * @param context 上下文
  */
-export declare function orderBy<T, C>(array: T[], fieldConfs: OrderByFieldConfs<T, C>, context?: C): T[];
+export declare function orderBy<T, C = any>(array: T[], fieldConfs: OrderByFieldConfs<T, C>, context?: C): T[];
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/sum.d.ts b/func/sum.d.ts
index ff945c4..6f0d641 100644
--- a/func/sum.d.ts
+++ b/func/sum.d.ts
@@ -4,7 +4,7 @@
  * @param iterate 回调
  * @param context 上下文
  */
-export declare function sum<T, C>(obj: T[], iterate?: string | number | ((this: C, item: T, index: number, list: T[]) => number), context?: C): number;
+export declare function sum<T, C = any>(obj: T[], iterate?: string | number | ((this: C, item: T, index: number, list: T[]) => number), context?: C): number;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/throttle.d.ts b/func/throttle.d.ts
index 5e383df..4292cf3 100644
--- a/func/throttle.d.ts
+++ b/func/throttle.d.ts
@@ -15,7 +15,7 @@ export interface ThrottleOptions {
  * @param wait 毫秒
  * @param options 可选参数
  */
-export declare function throttle<C>(callback: (this: C, ...args: any[]) => any, wait: number, options?: ThrottleOptions): (this: C, ...args: any[]) => any;
+export declare function throttle<C = any>(callback: (this: C, ...args: any[]) => any, wait: number, options?: ThrottleOptions): (this: C, ...args: any[]) => any;
 
 declare module './ctor' {
   interface XEUtilsMethods {
diff --git a/func/toDateString.d.ts b/func/toDateString.d.ts
index 55f551f..96573c1 100644
--- a/func/toDateString.d.ts
+++ b/func/toDateString.d.ts
@@ -1,8 +1,8 @@
-import { FirstDayOfWeek } from "./getWhatWeek"
+import { FirstDayOfWeek } from './getWhatWeek'
 
 export type ToDateStringFormats = {
   /**
-   * 用于格式化季度  
+   * 用于格式化季度
    * 例如：[null, '第一季度', '第二季度', '第三季度', '第四季度']
    */
   q?: string[] | {
diff --git a/package.json b/package.json
index c230c82..841ffd7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "xe-utils",
-  "version": "3.5.30",
+  "version": "3.5.31",
   "description": "JavaScript 函数库、工具类",
   "main": "index.js",
   "unpkg": "dist/xe-utils.umd.min.js",