⍝? Get the POSIX-style environment variables.
⍝? 
⍝? Each environment variable is provided as a pair of string variable names
⍝? and string value.
⍝? 
⍝? Morally, these are a value import, but until value imports are available
⍝? in the component model, this import function should return the same
⍝? values each time it is called.
#import("wasi:cli/environment", "get-environment")
micro get_environment() -> Array<(utf8, utf8)> { }

⍝? Get the POSIX-style arguments to the program.
#import("wasi:cli/environment", "get-arguments")
micro get_arguments() -> Array<utf8> { }

⍝? Return a path that programs should use as their initial current working
⍝? directory, interpreting `.` as shorthand for this.
#import("wasi:cli/environment", "initial-cwd")
micro initial_cwd() -> utf8? { }

⍝? Exit the current instance and any linked instances.
#import("wasi:cli/exit", "exit")
micro exit(status: Result<(), ()>) -> () { }

⍝? Run the program.
#import("wasi:cli/run", "run")
micro run() -> Result<(), ()> { }

alias typus InputStream: InputStream { }

#import("wasi:cli/stdin", "get-stdin")
micro get_stdin() -> InputStream { }

alias typus OutputStream: OutputStream { }

#import("wasi:cli/stdout", "get-stdout")
micro get_stdout() -> OutputStream { }

alias typus OutputStream: OutputStream { }

#import("wasi:cli/stderr", "get-stderr")
micro get_stderr() -> OutputStream { }

⍝? The input side of a terminal.
#import("wasi:cli/terminal-input", "terminal-input")
class TerminalInput {
}
⍝? The output side of a terminal.
#import("wasi:cli/terminal-output", "terminal-output")
class TerminalOutput {
}
alias typus TerminalInput: TerminalInput { }

⍝? If stdin is connected to a terminal, return a `terminal-input` handle
⍝? allowing further interaction with it.
#import("wasi:cli/terminal-stdin", "get-terminal-stdin")
micro get_terminal_stdin() -> TerminalInput? { }

alias typus TerminalOutput: TerminalOutput { }

⍝? If stdout is connected to a terminal, return a `terminal-output` handle
⍝? allowing further interaction with it.
#import("wasi:cli/terminal-stdout", "get-terminal-stdout")
micro get_terminal_stdout() -> TerminalOutput? { }

alias typus TerminalOutput: TerminalOutput { }

⍝? If stderr is connected to a terminal, return a `terminal-output` handle
⍝? allowing further interaction with it.
#import("wasi:cli/terminal-stderr", "get-terminal-stderr")
micro get_terminal_stderr() -> TerminalOutput? { }