Meta tweaks

Author: sindresorhus

.github/security.md

@@ -0,0 +1,3 @@
+# Security Policy
+
+To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.

.github/workflows/main.yml

@@ -12,8 +12,8 @@ jobs:
         node-version:
           - 16
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2
+      - uses: actions/checkout@v5
+      - uses: actions/setup-node@v5
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install

package.json

@@ -12,6 +12,8 @@
 	},
 	"type": "module",
 	"exports": "./index.js",
+	"types": "./index.d.ts",
+	"sideEffects": false,
 	"engines": {
 		"node": "^12.20.0 || ^14.13.1 || >=16.0.0"
 	},

readme.md

@@ -6,8 +6,8 @@ Especially useful for Electron apps as GUI apps on macOS doesn't inherit the env
 
 ## Install
 
-```
-$ npm install shell-env
+```sh
+npm install shell-env
 ```
 
 ## Usage