tkt

tkt, pronounced toolkit, is an opinionated toolkit for building Node.js applications. Comes with good IntelliSense support thanks to TypeScript.

CLI

Most Node.js applications have a CLI entry point. The CLI API allows you to quickly create a CLI application.

Behind the scenes, it is powered by yargs with a reduced API surface and sensible defaults.

Features:

Strict by default. Unknown commands and arguments are rejected.
Supports --help generation.
Async errors result in failure exit code by default.

require('tkt')
  .cli()
  .command(
    '$0',
    'Default command',
    {
      x: { type: 'number', desc: 'X coordinate', demand: true },
      y: { type: 'number', desc: 'Y coordinate', demand: true },
    },
    async args => {
      console.log([args.x, args.y])
    },
  )
  .command(
    'greet <name>',
    'Displays a greeting',
    {
      name: { type: 'string' },
    },
    async args => {
      console.log(`Hello, ${args.name}`)
    },
  )
  .parse()

To learn more, see the cli() function documentation.

Structured logging

Structured logging (JSON log output).
When connected to TTY, log output is prettified.

To learn more, see the logger() function documentation.

Invariant

See invariant npm package.

To learn more, see the invariant() function documentation.