ES6 IMPORT RESULTS UNDEFINED

[salmansaleempiaic]

[bcoe]

@salmansaleempiaic please provide code that I can copy and paste rather than a screen shot 👍 better still, could you provide a project I can clone on GitHub?

yargs does support ESM, and my guess is you have something configured slightly wrong in the project.

[thurinus]

I think ran into the same issue today while running through a tutorial.
package.json:

{
  "name": "playground",
  "version": "1.0.0",
  "description": "",
  "main": "app.js",
  "type": "module",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "yargs": "^17.0.1"
  }
}

app.js:

import yargs from 'yargs';

console.log(process.argv);
console.log(yargs.argv);

running node .\app.js would yield:

[
  '<hidden dir>nodejs\\node.exe',
  '<hidden proj dir>\\app.js'
]
undefined

If I dropped the "type": "module" to go back to commonJS and used const yargs = require('yargs'), it works fine. Am I making a rookie mistake?

[aakasheoran]

It still has the same issue, can't use ES6 import syntax.

File Content:
import yargs from 'yargs';
console.log(yargs.Argv)

Output:
node .\app.js test1 test2
undefined

[bcoe]

import yargs from 'yargs'
import { hideBin } from 'yargs/helpers'

yargs(hideBin(process.argv))
  .command('curl <url>', 'fetch the contents of the URL', () => {}, (argv) => {
    console.info(argv)
  })
  .demandCommand(1)
  .parse()

☝️ if you're using pure ESM the format is as follows.