(module ;; Correct module name: stdio, not stdout (import "wasi:cli/stdio@0.2.6" "get-stdout" (func $get_stdout (result i32))) ;; Write and flush a buffer. (import "wasi:io/streams@0.2.0" "blocking-write-and-flush" (func $bwrite (param i32 i32 i32) (result i32))) (memory (export "memory") 1) (data (i32.const 0) "Hello, World!\n") (func (export "main") (local $stdout i32) ;; Get the stdout stream handle call $get_stdout local.set $stdout ;; Write "Hello, World!\n" (14 bytes) to stdout local.get $stdout i32.const 0 i32.const 14 call $bwrite drop ;; ignore the return value (0 = success) ) )