args-pattern

args-pattern

A Nodejs lib that arranges the arguments passed to a function based on pattern string

Description

This library intends to help the developers to maintain backwards compatibility in their functions, by making and maintaining optional parameters, and not worrying to write code to assign the correct values to the arguments

Installation

npm install parse-args -S

Typical Example of optional parameters

// params ([name], [email], age, [gender])
function testFn(name="vin", email="[e-mail]", age, gender="female"){
    if(!email) {
        age = name;
        name = "vin"
    } else if (!age) {
        age = email
        email = "[e-mail]"
    }
  
}

testFn("john", 34)

Example after using this library

var parseArgs = require("args-pattern")
function testFn() {
    let [name, email, age, gender] = parseArgs(arguments, "[name] [, email] , age [, gender]", {
        args: ['vin', '[e-mail]', 34, "female"]
    })

// Output name === "john"
// Output email === "[e-mail]"
// Output age === 35
// Output gender === "female"
} 

testFn("john", 35)

Even though the real world examples can get a little more complicate, parse-args library will be there to rescue, so that you can avoid a lot of spaghetti code :thumbsup:

Test

npm install
mocha test.js

License

MIT