Sun calculation js library which is fully based on formula from http://aa.quae.nl/en/reken/zonpositie.html
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666 B
666 B
own-or-env
Use an objects own property, or an environment variable. Optionally treat as a boolean if the env should be set to 1 or 0.
API
ownOrEnv(object, field, env, boolean)
Use the object[field] if it's an own property, otherwise use the
named environent variable. If boolean is set to true, then cast
to a boolean flag.
USAGE
// will set doTheThing to true based on config.doThing, falling back
// to reading process.env.DO_THING, where '0' is treated as false.
var doTheThing = ownOrEnv(config, 'doThing', 'DO_THING', true)
// just treat this one as a string, not a boolean flag
var file = ownOrEnv(config, 'file', 'MY_FILE')