add basic typescript typings

.gitignore

@@ -27,4 +27,5 @@ vendor
 temp
 tmp
 TODO.md
-package-lock.json
+package-lock.json
+types

lib/picomatch.js

@@ -23,7 +23,7 @@ const isObject = val => val && typeof val === 'object' && !Array.isArray(val);
  * console.log(isMatch('a.b')); //=> true
  * ```
  * @name picomatch
- * @param {String|Array} `globs` One or more glob patterns.
+ * @param {String|Array} `glob` One or more glob patterns.
  * @param {Object=} `options`
  * @return {Function=} Returns a matcher function.
  * @api public

lib/scan.js

@@ -39,7 +39,7 @@ const depth = token => {
  * console.log(pm.scan('foo/bar/*.js'));
  * { isGlob: true, input: 'foo/bar/*.js', base: 'foo/bar', glob: '*.js' }
  * ```
- * @param {String} `str`
+ * @param {String} `input`
  * @param {Object} `options`
  * @return {Object} Returns an object with tokens and regex source string.
  * @api public

package.json

@@ -12,26 +12,31 @@
   "license": "MIT",
   "files": [
     "index.js",
+    "types/index.d.ts",
     "lib"
   ],
   "main": "index.js",
+  "typings": "types/index.d.ts",
   "engines": {
     "node": ">=8.6"
   },
   "scripts": {
     "lint": "eslint --cache --cache-location node_modules/.cache/.eslintcache --report-unused-disable-directives --ignore-path .gitignore .",
     "mocha": "mocha --reporter dot",
-    "test": "npm run lint && npm run mocha",
+    "test": "npm run lint && npm run mocha && npm run types",
     "test:ci": "npm run test:cover",
+    "types": "tsc",
     "test:cover": "nyc npm run mocha"
   },
   "devDependencies": {
+    "@types/node": "^13.1.0",
     "eslint": "^6.8.0",
     "fill-range": "^7.0.1",
     "gulp-format-md": "^2.0.0",
     "mocha": "^6.2.2",
     "nyc": "^15.0.0",
-    "time-require": "github:jonschlinkert/time-require"
+    "time-require": "github:jonschlinkert/time-require",
+    "typescript": "^3.7.4"
   },
   "keywords": [
     "glob",

tsconfig.json

@@ -0,0 +1,11 @@
+{
+  "compilerOptions": {
+    "declaration": true,
+    "noEmit": false,
+    "allowJs": true,
+    "checkJs": false,
+    "outDir": "types",
+    "emitDeclarationOnly": true
+  },
+  "include": ["index.js"]
+}