Erro: Type 'Chart' is missing the following properties from type 'any[]': length, pop, pus

import { ChartjsService } from ‘./…/…/services/chartjs.service’;
import { Component, OnInit, ViewChild, ElementRef } from ‘@angular/core’;
import { Chart } from ‘chart.js’;
import { map } from ‘rxjs/operators’;

@Component({
selector: ‘app-graph’,
templateUrl: ‘./graph.page.html’,
styleUrls: [‘./graph.page.scss’],
})
export class GraphPage {

chart = [];

constructor(private _chart: ChartjsService) {}

ngOnInit(){

this._chart.getInfo()
  .subscribe(res => {
    
    let deFunc = res['list'].pipe(map((res: { main: { deFunc: any; }; }) => res.main.deFunc))
    let cdOperacao = res['list'].pipe(map((res: { main: { cdOperacao: any; }; }) => res.main.cdOperacao))
    let dtOperacao = res['list'].pipe(map((res: { main: { dtOperacao: any; }; }) => res.main.dtOperacao))

    let chartDates = []
    dtOperacao.forEach((res: number ) => {
      let jsdate = new Date(res * 1000)
      chartDates.push(jsdate.toLocaleTimeString('en', { year: 'numeric', month: 'string' }))
    })
    
    this.chart = new Chart('canvas', {
      type: 'line',
      data: {
        labels: chartDates,
        datasets: [
          {
            data: deFunc,
            borderColor: '#3cba9f',
            fill: false
          },
          {
            data: cdOperacao,
            borderColor: '#ffcc00',
            fill: false
          },
        ]
      },
      options: {
        legend: {
          display: false
        },
        scales: {
          xAxes: [{
            display: true 
          }],
          yAxes: [{
            display: true 
          }]
        }
      }
    })
  })

}

}