built-in
- append
- appendEnd
- assert
- assertEqual
- background
- backgroundAnd
- call
- cd
- closure
- dispose
- disposeAll
- disposeErr
- each
- eval
- exec
- exit
- exitCode
- flatMap
- Fn
- getArgv
- getErr
- getOutAndErr
- insert
- isType
- join
- len
- map
- max
- min
- minOf
- pop
- printError
- println
- printlnError
- push
- pushAll
- read
- remove
- scriptPath
- source
- split
- stepBy
- time
- timeMs
- wait
- waitAll
- where
- withIndex
- write