yargs.command is not working (error msg: yargs.command is not a function)

Question

I am trying to create yargs command, when I run the app I get an error.

When I run the following:

node app.js add

on my node.js code:

const yargs = require('yargs')
yargs.command({
    command:'add',
    describe:'Adding command',
    handler:function(){
        console.log('Adding notes')
    }
}).parse()

console.log('yargs.argv')

Error:

C:\node\notes-app\app.js:3
yargs.command({
      ^
**TypeError: yargs.command is not a function**
    at Object.<anonymous> (C:\node\notes-app\app.js:3:7)
    at Module._compile (internal/modules/cjs/loader.js:1063:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
    at Module.load (internal/modules/cjs/loader.js:928:32)
    at Function.Module._load (internal/modules/cjs/loader.js:769:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
    at internal/main/run_main_module.js:17:47

Yargs version:1.1.0
node version: v14.16.0
vs code version
1.55.2(user setup) OS:Window 10

Edit: (I have already viewed this question but it didn't help because already added .parse())

IT ACADEMY · Accepted Answer · 2021-12-20 12:20:49Z

2

Try following lines.

const yargs = require('yargs')
const {hideBin} = require('yargs/helpers')
yargs(hideBin(process.argv)).command({
    command:'add',
    describe:'Adding command',
    handler:function(){
        console.log('Adding notes')
    }
}).parse()
console.log('yargs.argv')

answered Dec 20, 2021 at 12:20

IT ACADEMY

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1 Comment

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randomuser5767124 · Accepted Answer · 2021-05-21 02:17:25Z

0

Yargs 1.1.0 is a long time ago, 7 years infact. Back then they didn't have the .command() method.

https://www.npmjs.com/package/yargs/v/1.1.0

The easiest solution is just to update. You should be able to go to atleast v14 or v15 with node v14.16.

If you don't want to you will need to add your own small command parser:

const argv = require('yargs').argv;

if(argv._[0] === "add") {
   // ...
}

answered May 21, 2021 at 2:17

randomuser5767124

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