create-argv

a useless node arguments formater

usage

const createArgv = require("@focme/argv")

const argv = createArgv() // a map
const argvObject = argv.object() // an object

createArgv() will return a map object for the options
createArgv().object() will return an object for the options
createArgv().opt() will return an object for the options that every key removed the leading - or --
createArgv().array() will return an entries of the options map

// --config ./webpack/webpack.dev.config

console.log(createArgv())
// Map(1) { "--config" => "./webpack/webpack.dev.config" }

console.log(createArgv().object())
// { "--config": "./webpack/webpack.dev.config" }

console.log(createArgv().opt())
// { "config": "./webpack/webpack.dev.config" }

console.log(createArgv().array())
// [["--config", "./webpack/webpack.dev.config"]]

pipe and commit

pipe

pipe(command, callback, type)

use pipe() function to put a callback into a map for one key in the options
the callback could be an async function

// call this pipe callback while there is a command --key
createArgv().pipe("key", value => { ... }).commit(() => { ... })

// always call this pipe callback whether there is a command --key
// the value will be undefined
createArgv().pipe("key", value => { ... }, "always").commit(() => { ... })

// will not call the pipe callbacks after this pipe if there is a command --key
createArgv().pipe("key", value => { ... }, "break").commit(() => { ... })

commit

use commit() function to run the callbacks in the pipe
after commit() complete the pipe will be cleard

await createArgv().pipe(key, value => {
    ...
}).commit()

as commit is an async function
always should use async before it or use then after it

in the callback of commit will send the keys in createArgv but not in the pipe
return false the commit will stop run pipe callbacks

// -V
await createArgv().pipe("v", value => {
    console.log("version 10.01")
}).commit((keys) => {
    // keys = ["-V"]
    if (keys.length > 0) {
        console.log(`bad option ${key}`) // bad option -V
    }
    // commit will not run the pipe callbacks if keys.length > 0
    return keys.length < 1 
})

dont use the commit callback if dont care about the not matched keys