How to read and display unstructured Excel sheet data in Angular6

Question

Is there any way to Read unstructured data from an excel sheet and display it out in the browser as table using Angular6 .

Currently i am looking at wijmo.grid.xlsx Module which does both, but it is not free.

importExcelAsync() {
    var fileInput = <HTMLInputElement>$('#importFile')[0];
    if (fileInput.files[0]) {
        wijmo.grid.xlsx.FlexGridXlsxConverter.loadAsync(this.flexGrid, fileInput.files[0], { includeColumnHeaders: this.includeColumnHeader });
    }
}

Is there any free alternative for this, / or any other way to read and display data from xlsx in Angular6. Please Help.