=== tests/cases/compiler/chainedAssignment2.ts ===
var a: string;
>a : string

var b: number;
>b : number

var c: boolean;
>c : boolean

var d: Date;
>d : Date
>Date : Date

var e: RegExp;
>e : RegExp
>RegExp : RegExp

a = b = c = d = e = null;
>a = b = c = d = e = null : null
>a : string
>b = c = d = e = null : null
>b : number
>c = d = e = null : null
>c : boolean
>d = e = null : null
>d : Date
>e = null : null
>e : RegExp
>null : null