commander-coercions

A collection of commander coercions so you don't have to copy them from project-to-project.

 % npm install commander-coercions

API

toInteger

program.option('-i, --integer <n>', 'An integer argument', toInteger)

% node cli --integer 5.5

program.integer
#=> 5

toFloat

program.option('-f, --float <n>', 'A float argument', toFloat)

% node cli --float 5.5

program.float
#=> 5.5

toListFromRange

program.option('-r, --range <a>..<b>', 'A range', toListFromRange)

% node cli --range 5..10

program.range
#=> [5, 10]

toListFromCommaDelimited

program.option('-d, --delimited <a>,<b>', 'A delimited list', toListFromCommaDelimited)

% node cli --delimited 5,10,15

program.delimited
#=> ['5', '10', '15']

toListFromMultipleInvocations

program.option('-c, --collect [value]', 'A repeatable value', toListFromMultipleInvocations, [])

% node cli -c foo -c bar -c baz

program.collect
#=> ['foo', 'bar', 'baz']

incrementBy

program.option('-v, --verbose', 'A value that can be increased', incrementBy(1), 0)

% node cli -vvvv --verbose

program.verbose
#=> 5

Inspiration

• commander.js documentation

License

MIT