argv parsing (that is actually useful)
argvee is available on npm.
npm install argvee
argvee argument parser takes the node.js standard
process.argv array and constructs an object with helpers
that can easily be queried.
;const argv = ;
When constructed, the argv collection recognizes three types command line arguments: commands, modes, and parameters.
Commands are the simplest of arguments. They are any arguments
that are listed to that do not start with the
Essentially, they are a list of keys.
// $ node cli.js hello universeargvcommands === 'hello' 'universe';
Modes are also a non-value list of keys, but they can be expressed
differently by using the
-- prefix. When using modes, if
it begins with a single
-, each letter will be parsed as its own mode.
// $ node cli.js --universe -abcargvmodes === 'universe' 'a' 'b' 'c';
Parameters are key:value pairs that are declared in a similiar manner as modes. They can be declared in any of the following ways.
// $ node cli.js --noun universe --noun=world -v say --topic=hello -w=nowargvparams ===noun: 'universe' 'world'v: 'say'topic: 'hello'w: 'now';
You can also specify parameters with multiple words by surrounding the phrase with double-quotes.
// $ node cli.js --say "hello universe" --say "hello world"argvparams ===say: 'hello universe' 'hello world';
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