1 interface IDictionary {
 2     add(key: string, value: any): void;
 3     remove(key: string): void;
 4     containsKey(key: string): boolean;
 5     keys(): string[];
 6     values(): any[];
 7 }
 8 
 9 class Dictionary {
10 
11     _keys: string[] = [];
12     _values: any[] = [];
13 
14     constructor(init: { key: string; value: any; }[]) {
15 
16         for (var x = 0; x < init.length; x++) {
17             this[init[x].key] = init[x].value;
18             this._keys.push(init[x].key);
19             this._values.push(init[x].value);
20         }
21     }
22 
23     add(key: string, value: any) {
24         this[key] = value;
25         this._keys.push(key);
26         this._values.push(value);
27     }
28 
29     remove(key: string) {
30         var index = this._keys.indexOf(key, 0);
31         this._keys.splice(index, 1);
32         this._values.splice(index, 1);
33 
34         delete this[key];
35     }
36 
37     keys(): string[] {
38         return this._keys;
39     }
40 
41     values(): any[] {
42         return this._values;
43     }
44 
45     containsKey(key: string) {
46         if (typeof this[key] === "undefined") {
47             return false;
48         }
49 
50         return true;
51     }
52 
53     toLookup(): IDictionary {
54         return this;
55     }
56 }

是ts写的但是没有ts的代码 格式，使用的是js的，，，TypeScript是js的超集。