Question 1

How to add Bash shell completion to a Yargs CLI?

Accepted Answer

Use the .completion() method in Yargs to generate completion scripts. Configure it for Bash or Zsh, and instruct users to source the output in their shell profiles for automatic tab completion.

Question 2

Yargs vs Commander: which is better for Node.js CLI tools?

Accepted Answer

Yargs excels with features like dynamic help and shell completion, ideal for complex, interactive tools. Commander is simpler and lighter, better suited for basic argument parsing without extra frills.

Question 3

How to define required options in Yargs?

Accepted Answer

Apply the .demandOption() method or set 'demand: true' in option definitions. For instance, .option('file', { demand: true }) ensures the option must be provided, throwing an error if missing.

Question 4

Can Yargs parse nested JSON from the command line?

Accepted Answer

Yes, through custom coerce functions or by using the .argv property with object parsing. Refer to the 'Objects' section in the parsing tricks documentation for specific examples.

Question 5

How to use Yargs with TypeScript without errors?

Accepted Answer

Install @types/yargs for type definitions and import yargs with ES modules. The docs provide TypeScript examples, ensuring type safety for commands and options.

Question 6

What's the difference between Yargs stable and @next versions?

Accepted Answer

The stable version is production-ready with reliable APIs, while @next includes bleeding-edge features but may have breaking changes. Use @next for testing new functionalities only.

yargs

What is yargs?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions