How can I in typescript access to a explicit argument from yargs?

Question

The concept of yargs is nice.

const argv = yargs.options({
    env: {
        alias: 'e',
        choices: ['dev', 'prod'] as const,
        demandOption: true,
        description: 'app environment'
    }
})
    .argv;

console.log(argv);

But if I check argv.env explicit, typescript say: There is no argv.env. How can I solve this in typescript?

if(argv.env == "dev"){ // not work in typescript
   ...
}

Have you read github.com/yargs/yargs/blob/master/docs/typescript.md? — jonrsharpe
– jonrsharpe, Commented Aug 2, 2021 at 15:56

Gerd · Accepted Answer · 2021-08-02 16:22:00Z

2

This work (if the program not using any asynchronous commands):

import yargs from 'yargs/yargs'; // <== very important !!!

const argv2 = yargs(process.argv.slice(2)).options({
    env: {
        alias: 'e',
        choices: ['dev', 'prod'] as const,
        demandOption: true,
        description: 'app environment'
    }
})
    .parseSync();

console.log(argv2.env);

answered Aug 2, 2021 at 16:22

Gerd

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1 Comment

Jaroslav Bezděk Over a year ago

Actually, parseSync() method solved it!

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