MCP Agent TypeScript Port

'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;