@sqlrooms/data-table / ArrowDataTableValueFormatter

Type Alias: ArrowDataTableValueFormatter()

ArrowDataTableValueFormatter = (type, value) => string | undefined

Formatter for rendering Arrow cell values in data tables. Return a string to override the default formatting. If you don't return anything (or return undefined), the default formatter is used.

Parameters

Parameter	Type	Description
type	arrow.DataType	The Arrow DataType for the column
value	unknown	The raw cell value

Returns

string | undefined

A formatted string, or undefined/nothing to fall back to the default

Example

formatValue: (type, value) => {
  if (arrow.DataType.isDecimal(type)) {
    return `$${value}`;
  }
  if (arrow.DataType.isBinary(type) && value instanceof Uint8Array) {
    return `${value.byteLength} bytes`;
  }
}