requires_arg example don't work

[salsan]

I try learn how to work this tool and requiresArg , and I've tried this example requires_arg.js but this is the result

$ node requires_arg.js

YError: Invalid second argument. Expected string or boolean but received object.
    at c (/home/pi/Desktop/test/node_modules/yargs/build/index.cjs:1:2244)
    at /home/pi/Desktop/test/node_modules/yargs/build/index.cjs:1:2096
    at Array.forEach (<anonymous>)
    at h (/home/pi/Desktop/test/node_modules/yargs/build/index.cjs:1:1993)
    at Bt.usage (/home/pi/Desktop/test/node_modules/yargs/build/index.cjs:1:39503)
    at Object.<anonymous> (/home/pi/Desktop/test/requires_arg.js:3:18)
    at Module._compile (node:internal/modules/cjs/loader:1109:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
    at Module.load (node:internal/modules/cjs/loader:989:32)
    at Function.Module._load (node:internal/modules/cjs/loader:829:14)
.
.
.
e [YError]: .usage() description must start with $0 if being used as alias for .command()
    at Bt.usage (/home/pi/Desktop/test/node_modules/yargs/build/index.cjs:1:39703)
    at Object.<anonymous> (/home/pi/Desktop/test/requires_arg.js:3:18)
    at Module._compile (node:internal/modules/cjs/loader:1109:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1138:10)
    at Module.load (node:internal/modules/cjs/loader:989:32)
    at Function.Module._load (node:internal/modules/cjs/loader:829:14)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:76:12)
    at node:internal/main/run_main_module:17:47

I wrote my ( based from this solution for other issue )version and run

var yargs = require('yargs/yargs')(process.argv.slice(2));

var argv = yargs.usage('This is my awesome program').options({
  'input': {
    type: "string",
    description: 'Input file name',
    requiresArg: true,
    alias: 'i',
  },
  'output': {
    type: "string",
    description: 'Output file name',
    requiresArg: true,
    alias: 'o'
  }
}).argv;

yargs.showHelp();

console.log('\n\nInspecting options');
console.dir(argv);

I replace short with alias, because I don't found short on the documentation

[kitesi]

Seems like it's because usage() changed how it works, Now it asks for the actual usage command as the first parameter like so:

yargs.usage("$0 [port]"), next would be description, builder and handler.

Your example works, but it doesn't provide the actual command or the allowed options, only the description. So I think something like this would be better:

var yargs = require('yargs/yargs')(process.argv.slice(2));

var argv = yargs.usage('$0 [port]', "Load up a server").options({
	input: {
		description: 'Input file name',
		requiresArg: true,
		alias: 'i',
	},
	output: {
		description: 'Output file name',
		requiresArg: true,
		alias: 'o',
	},
}).argv;

yargs.showHelp();

console.log('\n\nInspecting options');
console.dir(argv);

And yea looks like yargs changed from short to alias.