How to use the demandCommand function from yargs

Find comprehensive JavaScript yargs.demandCommand code examples handpicked from public code repositorys.

command.js

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yargs.command('*', false, () => {
  yargs.showHelp();
  console.error("Non-existing or no command specified.");
  process.exit(1);
})
yargs.demandCommand(1)

yargs.help('h')
yargs.alias('h', 'help')
yargs.alias('v', 'version')

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yargs.ts

GitHub: cspotcode/PO-33-KO-backup-re

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export function Command<Args extends Argv>(cmd: Command<Args>) {
    return {
        ...cmd,
        builder(yargs: Yargs<any>) {
            cmd.builder && cmd.builder(yargs);
            if(!cmd.handler) yargs.demandCommand();
            if(cmd.subCommands) {
                for(const subCommand of cmd.subCommands) {
                    yargs.command(subCommand);
                }

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command-manager.ts

GitHub: rxstack/rxstack

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cli.usage(`Usage: $0 <command> [options]`);
this.commands.forEach((command) => {
  cli.command(command);
});

cli.demandCommand(1)
  .strict()
  .alias('v', 'version')
  .help('h')
  .alias('h', 'help')

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