add release-t config files

.release-it.beta.json

@@ -0,0 +1,9 @@
+{
+  "github": {
+    "release": true
+  },
+  "npm": {
+    "tag": "next"
+  },
+  "preReleaseId": "beta"
+}

.release-it.json

@@ -0,0 +1,6 @@
+{
+  "github": {
+    "release": true,
+    "tagName": "v${version}"
+  }
+}

README.md

@@ -8,17 +8,20 @@ A [blazing fast](#benchmarks) deep object copier
 
 ## Table of contents
 
-- [Usage](#usage)
-- [Options](#options)
-  - [isStrict](#isstrict)
-  - [realm](#realm)
-- [Types supported](#types-supported)
-- [Benchmarks](#benchmarks)
-  - [Simple objects](#simple-objects)
-  - [Complex objects](#complex-objects)
-  - [Circular objects](#circular-objects)
-  - [Special objects](#special-objects)
-- [Development](#development)
+- [fast-copy](#fast-copy)
+  - [Table of contents](#table-of-contents)
+  - [Usage](#usage)
+  - [Options](#options)
+      - [isStrict](#isstrict)
+      - [realm](#realm)
+  - [Types supported](#types-supported)
+  - [Benchmarks](#benchmarks)
+      - [Simple objects](#simple-objects)
+      - [Complex objects](#complex-objects)
+      - [Big data](#big-data)
+      - [Circular objects](#circular-objects)
+      - [Special objects](#special-objects)
+  - [Development](#development)
 
 ## Usage
 
@@ -205,7 +208,10 @@ Standard practice, clone the repo and `npm i` to get the dependencies. The follo
 - dist => run `build` and `build:minified` scripts
 - lint => run ESLint on all files in `src` folder (also runs on `dev` script)
 - lint:fix => run `lint` script, but with auto-fixer
-- prepublish:compile => run `lint`, `test:coverage`, and `dist` scripts
+- prepublishOnly => run `lint`, `test:coverage`, and `dist` scripts
+- release => run `prepublishOnly` and release with new version
+- release:beta => run `prepublishOnly` and release with new beta version
+- release:dry => run `prepublishOnly` and simulate a new release
 - start => run `dev`
 - test => run AVA with NODE_ENV=test on all files in `test` folder
 - test:coverage => run same script as `test` with code coverage calculation via `nyc`

index.d.ts

@@ -1,8 +1,4 @@
 declare namespace FastCopy {
-  export interface Constructor extends Function {
-    new (...args: any[]): any;
-  }
-
   // @ts-ignore
   export type Realm = Window | Global;
 
@@ -12,25 +8,29 @@ declare namespace FastCopy {
     has: (value: any) => boolean;
   }
 
-  export type Copier = (object: any, cache: Cache) => any;
-
-  export type ObjectCloner = (
-    object: any,
-    realm: Realm,
-    handleCopy: Copier,
+  export type Copier = <ObjectType extends any = any>(
+    object: ObjectType,
     cache: Cache,
-  ) => any;
+  ) => ObjectType;
+
+  export type ObjectCloner = (object: any, realm: Realm, handleCopy: Copier, cache: Cache) => any;
 
   export type Options = {
     isStrict?: boolean;
     realm?: Realm;
   };
 }
 
-declare function copy<T>(object: T, options?: FastCopy.Options): T;
+declare function copy<ObjectType extends any = any>(
+  object: ObjectType,
+  options?: FastCopy.Options,
+): ObjectType;
 
 declare namespace copy {
-  function strictCopy<T>(object: T, options?: FastCopy.Options): T;
+  function strictCopy<ObjectType extends any = any>(
+    object: ObjectType,
+    options?: FastCopy.Options,
+  ): ObjectType;
 }
 
 export default copy;

package.json

@@ -63,7 +63,10 @@
     "lint": "NODE_ENV=test tslint 'src/*.ts'",
     "lint:fix": "npm run lint -- --fix",
     "prepublish": "if in-publish; then npm run prepublish:compile; fi",
-    "prepublish:compile": "npm run lint && npm run test:coverage && npm run dist",
+    "prepublishOnly": "npm run lint && npm run test:coverage && npm run dist",
+    "release": "release-it",
+    "release:beta": "release-it --config=.release-it.beta.json",
+    "release:dry": "release-it --dry-run",
     "start": "npm run dev",
     "test": "NODE_PATH=. jest",
     "test:coverage": "npm run test -- --coverage",

src/fast-copy.d.ts

@@ -1,8 +1,4 @@
 declare namespace FastCopy {
-  export interface Constructor extends Function {
-    new (...args: any[]): any;
-  }
-
   // @ts-ignore
   export type Realm = Window | Global;
 
@@ -12,23 +8,27 @@ declare namespace FastCopy {
     has: (value: any) => boolean;
   }
 
-  export type Copier = (object: any, cache: Cache) => any;
-
-  export type ObjectCloner = (
-    object: any,
-    realm: Realm,
-    handleCopy: Copier,
+  export type Copier = <ObjectType extends any = any>(
+    object: ObjectType,
     cache: Cache,
-  ) => any;
+  ) => ObjectType;
+
+  export type ObjectCloner = (object: any, realm: Realm, handleCopy: Copier, cache: Cache) => any;
 
   export type Options = {
     isStrict?: boolean;
     realm?: Realm;
   };
 }
 
-declare function copy<T>(object: T, options?: FastCopy.Options): T;
+declare function copy<ObjectType extends any = any>(
+  object: ObjectType,
+  options?: FastCopy.Options,
+): ObjectType;
 
 declare namespace copy {
-  function strictCopy<T>(object: T, options?: FastCopy.Options): T;
+  function strictCopy<ObjectType extends any = any>(
+    object: ObjectType,
+    options?: FastCopy.Options,
+  ): ObjectType;
 }

src/index.ts

@@ -1,10 +1,5 @@
 // utils
-import {
-  createCache,
-  getObjectCloneLoose,
-  getObjectCloneStrict,
-  getRegExpFlags,
-} from './utils';
+import { createCache, getObjectCloneLoose, getObjectCloneStrict, getRegExpFlags } from './utils';
 
 const { isArray } = Array;
 
@@ -63,15 +58,12 @@ function copy<T>(object: T, options?: FastCopy.Options): T {
    * @param object the object to copy
    * @returns the copied object
    */
-  const handleCopy: FastCopy.Copier = (
-    object: any,
-    cache: FastCopy.Cache,
-  ): any => {
+  const handleCopy: FastCopy.Copier = (object: any, cache: FastCopy.Cache): any => {
     if (!object || typeof object !== 'object' || cache.has(object)) {
       return object;
     }
 
-    const Constructor: FastCopy.Constructor = object.constructor;
+    const { constructor: Constructor } = object;
 
     // plain objects
     if (Constructor === realm.Object) {
@@ -108,10 +100,7 @@ function copy<T>(object: T, options?: FastCopy.Options): T {
 
     // regexps
     if (object instanceof realm.RegExp) {
-      clone = new Constructor(
-        object.source,
-        object.flags || getRegExpFlags(object),
-      );
+      clone = new Constructor(object.source, object.flags || getRegExpFlags(object));
 
       clone.lastIndex = object.lastIndex;