title: mat-table angular material data source format
body: <p>I am using Angular Material Mat-Table. how to change this data into a mat-table data source format.
  can someone help me to change this data as mat-table dataSource?</p>
  
  <p><a href="https://stackblitz.com/angular/jnmrolgdbaj?file=src%2Fapp%2Ftable-basic-example.ts" rel="nofollow noreferrer">https://stackblitz.com/angular/jnmrolgdbaj?file=src%2Fapp%2Ftable-basic-example.ts</a></p>
  
  <pre><code>"timelineitems": [
      {
          "1/29/2020": {
              "new_daily_cases": 0,
              "new_daily_deaths": 0,
              "total_cases": 0,
              "total_recoveries": 0,
              "total_deaths": 0
          },
          "1/30/2020": {
              "new_daily_cases": 1,
              "new_daily_deaths": 0,
              "total_cases": 1,
              "total_recoveries": 0,
              "total_deaths": 0
          },
          "1/31/2020": {
              "new_daily_cases": 1,
              "new_daily_deaths": 0,
              "total_cases": 1,
              "total_recoveries": 0,
              "total_deaths": 0
          }
      }
  ]
  </code></pre>