Missing std lib functions #6
Description
The following functions from JSONata are missing.
- substring
- sort
- shuffle
- assert
- error
- lookup
- foldLeft
- filter
- map
- formatBase
- formatNumber
- base64encode
- base64decode
- substringAfter
- substringBefore
- replace
- match
- contains
- split
- type
- power
- not
In some cases we have provided syntactic capability that replaces them, in others it's not clear that they really need to be part of the stdlib. But there are still a number which still need to be implemented.