workflow_cmds

error 

error(title: str, message)
Source code in gha_runner/helper/workflow_cmds.py 
def error(title: str, message):
    print(f"::error title={title}::{message}")

output 

output(name: str, value: str)
Source code in gha_runner/helper/workflow_cmds.py 
def output(name: str, value: str):
    with open(os.environ["GITHUB_OUTPUT"], "a") as output:
        output.write(f"{name}={value}\n")

warning 

warning(title: str, message)
Source code in gha_runner/helper/workflow_cmds.py 
def warning(title: str, message):
    print(f"::warning title={title}::{message}")