env

README

env

Read config from the process environment, falling back to a .env file — one call works in dev and prod alike

Documentation

Overview

Package env reads configuration from the process environment, falling back to a .env file when the variable isn't set. This makes one call work both in production (real env vars) and local dev under tools like the tinywasm daemon, which runs the app binary as a child process without exporting .env into its environment.

Index

• func Arg(key string) string
• func Get(key string) string
• func GetFrom(key, path string) string
• func GetRequired(key string, fallbackPaths ...string) (string, error)

Functions

func Arg

func Arg(key string) string

Arg returns the value for -key=value or -key value in os.Args (skipping argv[0]). Unset flags return "" — callers apply their own default, same as Get. Common pattern: tools like the tinywasm dev daemon pass runtime config as CLI flags to the child process instead of env vars.

func Get

func Get(key string) string

Get returns the value of key from the process environment, or — if unset — the value of key=... in path (typically ".env" in the working directory). Values wrapped in double quotes have them stripped. Returns "" if the key is set nowhere.

func GetFrom

func GetFrom(key, path string) string

GetFrom is Get with an explicit .env path, for callers not running from the project root.

func GetRequired

func GetRequired(key string, fallbackPaths ...string) (string, error)

GetRequired returns key from env, .env, or fallback paths in order. Returns an error if key is not found anywhere.