typescript-tuple - npm Package Compare versions

Comparing version 1.0.1 to 1.1.0

index.d.ts

@@ -26,13 +26,19 @@ /**
 export declare type Reverse<Tuple extends any[]> = utils.Reverse<Tuple>;
+export declare type Concat<Left extends any[], Right extends any[]> = utils.Concat<Left, Right>;
 export declare namespace utils {
     type Last<Tuple extends any[], Default = never> = {
-        0: Default;
-        1: Tuple extends [infer SoleElement] ? SoleElement : never;
-        2: ((..._: Tuple) => any) extends ((_: any, ..._1: infer Next) => any) ? Last<Next> : Default;
-    }[Tuple extends [] ? 0 : Tuple extends [any] ? 1 : 2];
+        empty: Default;
+        single: Tuple extends [infer SoleElement] ? SoleElement : never;
+        multi: ((..._: Tuple) => any) extends ((_: any, ..._1: infer Next) => any) ? Last<Next> : Default;
+    }[Tuple extends [] ? 'empty' : Tuple extends [any] ? 'single' : 'multi'];
     type Prepend<Tuple extends any[], Addend> = ((_: Addend, ..._1: Tuple) => any) extends ((..._: infer Result) => any) ? Result : never;
     type Reverse<Tuple extends any[], Prefix extends any[] = []> = {
-        0: Prefix;
-        1: ((..._: Tuple) => any) extends ((_: infer First, ..._1: infer Next) => any) ? Reverse<Next, Prepend<Prefix, First>> : never;
-    }[Tuple extends [any, ...any[]] ? 1 : 0];
+        empty: Prefix;
+        nonEmpty: ((..._: Tuple) => any) extends ((_: infer First, ..._1: infer Next) => any) ? Reverse<Next, Prepend<Prefix, First>> : never;
+    }[Tuple extends [any, ...any[]] ? 'nonEmpty' : 'empty'];
+    type Concat<Left extends any[], Right extends any[]> = {
+        emptyLeft: Right;
+        singleLeft: Left extends [infer SoleElement] ? Prepend<Right, SoleElement> : never;
+        multiLeft: ((..._: Reverse<Left>) => any) extends ((_: infer LeftLast, ..._1: infer ReversedLeftRest) => any) ? Concat<Reverse<ReversedLeftRest>, Prepend<Right, LeftLast>> : never;
+    }[Left extends [] ? 'emptyLeft' : Left extends [any] ? 'singleLeft' : 'multiLeft'];
 }

package.json

 {
   "name": "typescript-tuple",
-  "version": "1.0.1",
+  "version": "1.1.0",
   "description": "Generics to work with tuples in TypeScript",
@@ -27,3 +27,3 @@ "main": "index.js",
     "typescript": "^3.0.3",
-    "static-type-assert": "^0.0.1"
+    "static-type-assert": "^1.0.0"
   },
@@ -30,0 +30,0 @@ "peerDependencies": {

README.md

@@ -47,8 +47,16 @@ # TypeScript Tuple
 import { Reverse } from 'typescript-tuple'
-type Foo = Reverse<['a', 'b', 'c'] // Expect: ['c', 'b', 'a']
+type Foo = Reverse<['a', 'b', 'c']> // Expect: ['c', 'b', 'a']
 const foo: Foo = ['c', 'b', 'a']
 ```
 
+### `Concat`
+
+```typescript
+import { Concat } from 'typescript-tuple'
+type Foo = Concat<['a', 'b', 'c'], [0, 1, 2]> // Expect ['a', 'b', 'c', 0, 1, 2]
+const foo: Foo = ['a', 'b', 'c', 0, 1, 2]
+```
+
 ## License
 
 [MIT](https://git.io/fA2d9) @ [Hoàng Văn Khải](https://github.com/KSXGitHub)

New alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Fixed alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

5389

increased by17.69%

Lines of code

45

increased by15.38%

Number of lines in readme file

62

increased by14.81%

No dependency changes