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				@@ -15,14 +15,24 @@ 
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				 // aa('aas') 
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				 interface Storage { 
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				+ 
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				+    readonly length: number; 
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				+ 
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				+    clear(): void; 
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				+ 
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				     getItem(key: string): string | null; 
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				-    setItem(key: string, value: string): void; 
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				+    key(index: number): string | null; 
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				     removeItem(key: string): void; 
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				-    clear(): void; 
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				+    setItem(key: string, value: string): void; 
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				+ 
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				+    [name: string]: any; 
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				+    /** 
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				+     * 用户 token 
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				+     */ 
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				     token: string | null 
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				 } 
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