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							- 'use strict';
 
- const DatePart = require('./datepart');
 
- class Year extends DatePart {
 
-   constructor(opts={}) {
 
-     super(opts);
 
-   }
 
-   up() {
 
-     this.date.setFullYear(this.date.getFullYear() + 1);
 
-   }
 
-   down() {
 
-     this.date.setFullYear(this.date.getFullYear() - 1);
 
-   }
 
-   setTo(val) {
 
-     this.date.setFullYear(val.substr(-4));
 
-   }
 
-   toString() {
 
-     let year = String(this.date.getFullYear()).padStart(4, '0');
 
-     return this.token.length === 2 ? year.substr(-2) : year;
 
-   }
 
- }
 
- module.exports = Year;
 
 
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