Require Node.js 8, add TypeScript definition (#23)

.travis.yml

@@ -2,5 +2,3 @@ language: node_js
 node_js:
   - '10'
   - '8'
-  - '6'
-  - '4'

binary-extensions.json.d.ts

@@ -0,0 +1,3 @@
+declare const binaryExtensionsJson: readonly string[];
+
+export = binaryExtensionsJson;

index.d.ts

@@ -0,0 +1,14 @@
+/**
+List of binary file extensions.
+
+@example
+```
+import binaryExtensions = require('binary-extensions');
+
+console.log(binaryExtensions);
+//=> ['3ds', '3g2', …]
+```
+*/
+declare const binaryExtensions: readonly string[];
+
+export = binaryExtensions;

index.js

@@ -0,0 +1 @@
+module.exports = require('./binary-extensions.json');

index.test-d.ts

@@ -0,0 +1,6 @@
+import {expectType} from 'tsd';
+import binaryExtensions = require('.');
+import binaryExtensionsJson = require('./binary-extensions.json');
+
+expectType<readonly string[]>(binaryExtensions);
+expectType<readonly string[]>(binaryExtensionsJson);

package.json

@@ -10,14 +10,16 @@
 		"url": "sindresorhus.com"
 	},
 	"engines": {
-		"node": ">=0.10.0"
+		"node": ">=8"
 	},
 	"scripts": {
-		"test": "ava"
+		"test": "xo && ava && tsd"
 	},
-	"main": "binary-extensions.json",
 	"files": [
-		"binary-extensions.json"
+		"index.js",
+		"index.d.ts",
+		"binary-extensions.json",
+		"binary-extensions.json.d.ts"
 	],
 	"keywords": [
 		"bin",
@@ -31,6 +33,8 @@
 		"array"
 	],
 	"devDependencies": {
-		"ava": "0.16.0"
+		"ava": "^1.4.1",
+		"tsd": "^0.7.2",
+		"xo": "^0.24.0"
 	}
 }