想用json对象创建动态数组

Question

我有一个数组，我想对其进行迭代并将该数组推到新创建的json对象中。

this is my json with key value pair
'fileContent': {
           'content': [{
             'effectiveDate': '4/23/2019',
             'supplierId': 'ABD',
             'sailCode': 'CM0123',
             'Departure Date': '4/23/2019',
             'reportId': 7960
           },
           {
             'effectiveDate': '4/23/2019',
             'supplierId': 'ABD',
             'sailCode': 'CM0123',
             'Departure Date': '4/23/2019',
             'reportId': 7960
           }
         ],'fileContent': {
           'content': [{
             'effectiveDate': '4/23/2019',
             'supplierId': 'ABD',
             'sailCode': 'CM0123',
             'Departure Date': '4/23/2019',
             'reportId': 7960
           },
           {
             'effectiveDate': '4/23/2019',
             'supplierId': 'ABD',
             'sailCode': 'CM0123',
             'Departure Date': '4/23/2019',
             'reportId': 7960
           }
         ],
Requirement is i have to show the key as header and value as their property in each row. i am using ag-grid.

(1): i am able to get the content and key also 

    this.assiengedValue = fileContent.content;



    const types = Object.keys(this.assiengedValue[0]);

    (2): i want to iterate and put that into dynamic array like this.
    uiHeader[{'headerName':'effectiveDate','field': 'effectiveDate',
             {'headerName':'SupplierId','filed':'supplierId'},
             {'headerName':'SailCode','field':'sailCode'}

    ]

预计：提交的文件应位于具有headerName和field的数组内，以便我可以在columnDefs中进行设置。