Fix passing multiple —header flags

Closes #43

Author: sindresorhus

.github/workflows/main.yml

@@ -12,7 +12,6 @@ jobs:
         node-version:
           - 18
           - 16
-          - 14
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3

cli.js

@@ -2,7 +2,6 @@
 import process from 'node:process';
 import meow from 'meow';
 import captureWebsite from 'capture-website';
-import arrify from 'arrify';
 import splitOnFirst from 'split-on-first';
 import getStdin from 'get-stdin';
 
@@ -166,6 +165,7 @@ const cli = meow(`
 		},
 		header: {
 			type: 'string',
+			isMultiple: true,
 		},
 		userAgent: {
 			type: 'string',
@@ -222,11 +222,13 @@ if (options.clip) {
 }
 
 options.headers = {};
-for (const header of arrify(options.header)) {
+for (const header of options.header) {
 	const [key, value] = header.split(':');
 	options.headers[key.trim()] = value.trim();
 }
 
+delete options.header;
+
 if (options.authentication) {
 	const [username, password] = splitOnFirst(options.authentication, ':');
 	options.authentication = {username, password};

package.json

@@ -41,7 +41,6 @@
 		"jpg"
 	],
 	"dependencies": {
-		"arrify": "^3.0.0",
 		"capture-website": "^3.0.0",
 		"get-stdin": "^9.0.0",
 		"meow": "^10.1.3",

test.js.md

@@ -32,7 +32,6 @@ Generated by [AVA](https://avajs.dev).
       element: '.main-content',
       emulateDevice: 'iPhone X',
       fullPage: false,
-      header: 'x-powered-by: capture-website-cli',
       headers: {
         'x-powered-by': 'capture-website-cli',
       },