Better typings for mime module; Fix mime tests

types/mime/Mime.d.ts

@@ -0,0 +1,9 @@
+import { TypeMap } from "./index";
+
+export default class Mime {
+	constructor(mimes: TypeMap);
+
+	getType(path: string): string | null;
+    getExtension(mime: string): string | null;
+    define(mimes: TypeMap, force?: boolean): void;
+}

types/mime/index.d.ts

@@ -7,15 +7,10 @@
 
 export as namespace mime;
 
-export function getType(path: string): string;
-export function getExtension(mime: string): string;
-export function define(mimes: { [key: string]: string[] }, force?: boolean): void;
+export interface TypeMap { [key: string]: string[]; }
 
-export interface Charsets {
-    getType(path: string): string;
-    getExtension(mime: string): string;
-    define(mimes: { [key: string]: string[] }, force?: boolean): void;
-}
+export function getType(path: string): string | null;
+export function getExtension(mime: string): string | null;
+export function define(mimes: TypeMap, force?: boolean): void;
 
-export const charsets: Charsets;
 export const default_type: string;

types/mime/mime-tests.ts

@@ -1,12 +1,23 @@
 import * as mime from "mime";
+import Mime from "mime/Mime";
 
-let str: string;
-const obj: {} = {};
-const fallback = '';
+let strOrNul: string | null;
+
+const obj = {
+	mime: ["ext", "ext2"]
+};
+
+const obj2 = {
+	"text/plain": ["txt"]
+};
 
-str = mime.lookup(str, fallback);
-str = mime.extension(str);
-mime.load(str);
 mime.define(obj);
+mime.define(obj2, true);
+strOrNul = mime.getType("ext");
+strOrNul = mime.getType("foo");
+strOrNul = mime.getExtension("mime");
+strOrNul = mime.getExtension("bar");
 
-str = mime.charsets.lookup(str);
+const myMime = new Mime(obj);
+strOrNul = myMime.getType("foo");
+strOrNul = myMime.getExtension('text/plan');

types/mime/tsconfig.json

@@ -6,7 +6,7 @@
         ],
         "noImplicitAny": true,
         "noImplicitThis": true,
-        "strictNullChecks": false,
+        "strictNullChecks": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"
@@ -17,6 +17,7 @@
     },
     "files": [
         "index.d.ts",
+        "Mime.d.ts",
         "mime-tests.ts"
     ]
-}
+}