...

- label: 'Amount'
  key: 'lineAmount'
  type: 'number'
  showInTableHeader: false
  showInDetailList: true
  options:
    maximumFractionDigits: 2
    currencyCode: USD

The two options are not mandatory:

• maximumFractionDigits determines the maximum amount of digits after the decimal point.

• currencyCode accepts a 3-Letter ISO code, like EUR. If set, all other options are ignored and the number will be formatted with the given currency. For Euro, it would be 314,14 €

Date

type: date

This column type is used to declare data as date. Make sure that you declare the data backend-wise in the correct format: 2018-02-28 or 2018-02-28 18:33:56.01. A date-field shown in the User-Frontend will not contain the time-part.
How a date will be presented to the user depends on his used browser language, for example given the above date will look this:

...