Confmt

Format, convert, flatten, and diff configuration files. Supports JSON, TOML (Python 3.11+), and .env formats. Use when asked to pretty-print a config, flatten nested JSON to dot-notation, convert JSON to env vars, diff two config files to find changes, or sort config keys. Handles JSON↔flat↔env conversion. Zero dependencies.

Config file formatter, converter, and differ.

Commands

# Pretty-print JSON config
python3 scripts/confmt.py format config.json --sort

# Flatten nested config to dot-notation
cat config.json | python3 scripts/confmt.py format -o flat

# Convert JSON to .env format
python3 scripts/confmt.py format config.json -o env

# Compact/minify
python3 scripts/confmt.py format config.json --compact

# Diff two config files
python3 scripts/confmt.py diff prod.json staging.json

Formats

• JSON — read/write, pretty or compact
• TOML — read (Python 3.11+)
• .env — read/write
• flat — dot-notation output (key.subkey = value)

Diff Output

• + added keys
• - removed keys
• ~ changed values