Update slugify and add more flags (#1)

Co-authored-by: Sindre Sorhus <sindresorhus@gmail.com>

Author: sindresorhus

cli.js

@@ -8,7 +8,10 @@ const cli = meow(`
 	  $ slugify <string>
 
 	Options
-	  --separator=<string>  Word separator [Default: -]
+	  --separator=<string>           Word separator [Default: -]
+	  --no-lowercase                 Don’t make the slug lowercase
+	  --no-decamelize                Don’t convert camelCase to separate words
+	  --preserve-leading-underscore  If your string starts with an underscore, it will be preserved in the slugified string
 
 	Examples
 	  $ slugify 'Déjà Vu!'
@@ -19,6 +22,18 @@ const cli = meow(`
 	flags: {
 		separator: {
 			type: 'string'
+		},
+		lowercase: {
+			type: 'boolean',
+			default: true
+		},
+		decamelize: {
+			type: 'boolean',
+			default: true
+		},
+		preserveLeadingUnderscore: {
+			type: 'boolean',
+			default: false
 		}
 	}
 });

package.json

@@ -43,7 +43,7 @@
 		"id"
 	],
 	"dependencies": {
-		"@sindresorhus/slugify": "^0.6.0",
+		"@sindresorhus/slugify": "^0.11.0",
 		"meow": "^5.0.0"
 	},
 	"devDependencies": {

readme.md

@@ -19,7 +19,10 @@ $ slugify --help
     $ slugify <string>
 
   Options
-    --separator=<string>  Word separator [Default: -]
+    --separator=<string>           Word separator [Default: -]
+    --no-lowercase                 Don’t make the slug lowercase
+    --no-decamelize                Don’t convert camelCase to separate words
+    --preserve-leading-underscore  If your string starts with an underscore, it will be preserved in the slugified string
 
   Examples
     $ slugify 'Déjà Vu!'

test.js

@@ -5,3 +5,23 @@ test('main', async t => {
 	const {stdout} = await execa('./cli.js', ['Déjà Vu!']);
 	t.is(stdout, 'deja-vu');
 });
+
+test('separator', async t => {
+	const {stdout} = await execa('./cli.js', ['Unicorns & Rainbows', '--separator=_']);
+	t.is(stdout, 'unicorns_and_rainbows');
+});
+
+test('lowercase', async t => {
+	const {stdout} = await execa('./cli.js', ['Déjà Vu!', '--no-lowercase']);
+	t.is(stdout, 'Deja-Vu');
+});
+
+test('decamelize', async t => {
+	const {stdout} = await execa('./cli.js', ['fooBar', '--no-decamelize']);
+	t.is(stdout, 'foobar');
+});
+
+test('preserve-leading-underscore', async t => {
+	const {stdout} = await execa('./cli.js', ['_foo_bar', '--preserve-leading-underscore']);
+	t.is(stdout, '_foo-bar');
+});