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dotenv language preview

1. Application config

comments, keys, and values
horizon-dark
# application environment
NODE_ENV=production
PORT=8080
DEBUG=false
APP_NAME=svelte-highlight
atom-one-dark
# application environment
NODE_ENV=production
PORT=8080
DEBUG=false
APP_NAME=svelte-highlight
github-dark
# application environment
NODE_ENV=production
PORT=8080
DEBUG=false
APP_NAME=svelte-highlight
dracula
# application environment
NODE_ENV=production
PORT=8080
DEBUG=false
APP_NAME=svelte-highlight
nord
# application environment
NODE_ENV=production
PORT=8080
DEBUG=false
APP_NAME=svelte-highlight
github
# application environment
NODE_ENV=production
PORT=8080
DEBUG=false
APP_NAME=svelte-highlight

2. Quoting and interpolation

quoted values and variable references
horizon-dark
HOST=localhost
PORT=5432
DATABASE_URL="postgres://${HOST}:${PORT}/app"
GREETING='literal $not-expanded value'
PATH_EXTRA="${HOME}/bin"
atom-one-dark
HOST=localhost
PORT=5432
DATABASE_URL="postgres://${HOST}:${PORT}/app"
GREETING='literal $not-expanded value'
PATH_EXTRA="${HOME}/bin"
github-dark
HOST=localhost
PORT=5432
DATABASE_URL="postgres://${HOST}:${PORT}/app"
GREETING='literal $not-expanded value'
PATH_EXTRA="${HOME}/bin"
dracula
HOST=localhost
PORT=5432
DATABASE_URL="postgres://${HOST}:${PORT}/app"
GREETING='literal $not-expanded value'
PATH_EXTRA="${HOME}/bin"
nord
HOST=localhost
PORT=5432
DATABASE_URL="postgres://${HOST}:${PORT}/app"
GREETING='literal $not-expanded value'
PATH_EXTRA="${HOME}/bin"
github
HOST=localhost
PORT=5432
DATABASE_URL="postgres://${HOST}:${PORT}/app"
GREETING='literal $not-expanded value'
PATH_EXTRA="${HOME}/bin"

3. Exported variables

export prefix and secrets
horizon-dark
export AWS_REGION=us-east-1
export API_TOKEN="sk_live_0123456789"
# feature flags
ENABLE_CACHE=true
MAX_RETRIES=3
atom-one-dark
export AWS_REGION=us-east-1
export API_TOKEN="sk_live_0123456789"
# feature flags
ENABLE_CACHE=true
MAX_RETRIES=3
github-dark
export AWS_REGION=us-east-1
export API_TOKEN="sk_live_0123456789"
# feature flags
ENABLE_CACHE=true
MAX_RETRIES=3
dracula
export AWS_REGION=us-east-1
export API_TOKEN="sk_live_0123456789"
# feature flags
ENABLE_CACHE=true
MAX_RETRIES=3
nord
export AWS_REGION=us-east-1
export API_TOKEN="sk_live_0123456789"
# feature flags
ENABLE_CACHE=true
MAX_RETRIES=3
github
export AWS_REGION=us-east-1
export API_TOKEN="sk_live_0123456789"
# feature flags
ENABLE_CACHE=true
MAX_RETRIES=3

4. Parameter expansion defaults

${VAR:-default}, ${VAR:=default}, and ${VAR:+alt}
horizon-dark
PORT=${PORT:-3000}
DATABASE_URL=${DATABASE_URL:=postgres://localhost/app}
FEATURE_FLAG=${FEATURE_FLAG:+enabled}
atom-one-dark
PORT=${PORT:-3000}
DATABASE_URL=${DATABASE_URL:=postgres://localhost/app}
FEATURE_FLAG=${FEATURE_FLAG:+enabled}
github-dark
PORT=${PORT:-3000}
DATABASE_URL=${DATABASE_URL:=postgres://localhost/app}
FEATURE_FLAG=${FEATURE_FLAG:+enabled}
dracula
PORT=${PORT:-3000}
DATABASE_URL=${DATABASE_URL:=postgres://localhost/app}
FEATURE_FLAG=${FEATURE_FLAG:+enabled}
nord
PORT=${PORT:-3000}
DATABASE_URL=${DATABASE_URL:=postgres://localhost/app}
FEATURE_FLAG=${FEATURE_FLAG:+enabled}
github
PORT=${PORT:-3000}
DATABASE_URL=${DATABASE_URL:=postgres://localhost/app}
FEATURE_FLAG=${FEATURE_FLAG:+enabled}