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https://github.com/craigmulligan/js-fire

A javascript clone of google/python-fire 🔥
https://github.com/craigmulligan/js-fire

cli hacktoberfest javascript node nodejs python-fire

Last synced: 2 months ago
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A javascript clone of google/python-fire 🔥

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# js-fire [![Node.js CI](https://github.com/hobochild/js-fire/actions/workflows/node.js.yml/badge.svg)](https://github.com/hobochild/js-fire/actions/workflows/node.js.yml)

> A javascript implementation of [google/python-fire](https://github.com/google/python-fire)

js-fire is a library for automatically generating command line interfaces
(CLIs) from most js objects.

- js Fire is a simple way to create a CLI in js.
- js Fire helps with exploring existing code or turning other people's code
into a CLI.
- js Fire makes transitioning between Bash and js easier.

## Installation

```
yarn add js-fire
```

```
npm install js-fire
```

js-fire is exposed as both an [API](#api-usage) and a [CLI](#cli-usage).

## API Usage

You can call `Fire` on any functions and objects:

Here's an example of calling Fire on a object, you can infinitely nest objects to create subcommands.

```javascript
const fire = require("js-fire");

const calculator = {
__description__: "I am a math machine",
double: (number) => {
// I double things
return 2 * number;
},
add: (n1 = Math.PI, n2) => {
return n1 + n2;
},
misc: {
year: () => "1999",
brand: () => "casio",
hello: (name) => `hello ${name}`,
},
};

fire(calculator);
```

Then, from the command line, you can run:

```bash
node calculator.js double --number=15 # 30
```

```bash
node calculator.js misc hello hobochild # 'hello hobochild'
```

Automactic `--help` command.

```bash
node calculator.js --help

USAGE:
node calculator.js

DESCRIPTION:
I am a math machine

COMMANDS:

half --number=
double --number=
add --n1=3.141592653589793 --n2=

misc
year
brand
hello --name=
```

Automatic `--interactive` mode:

[![asciicast](https://asciinema.org/a/QdxxOZgsK4Wp0nxT7ZEn6mXIi.svg)](https://asciinema.org/a/QdxxOZgsK4Wp0nxT7ZEn6mXIi)

For additional examples, see [/examples](/examples).

## CLI Usage

js-fire exposes a CLI that takes modulePath and passes it to `js-fire`.

```bash
USAGE:
js-fire --modulePath=
```

### Example

So you can js-fire on _most_ js modules.

```bash
js-fire fs -- writeFileSync --path=hello.txt --data="hiii"
```

You can also use `interactive` and `help` mode to explore a modules api:

```bash
js-fire fs -- -h

USAGE:
js-fire

COMMANDS:

appendFile --path= --data= --options= --callback=
appendFileSync --path= --data= --options=
access --path= --mode= --callback=
accessSync --path= --mode=
chown --path= --uid= --gid= --callback=
chownSync --path= --uid= --gid=
chmod --path= --mode= --callback=
chmodSync --path= --mode=
close --fd= --callback=
closeSync --fd=
copyFile --src= --dest= --flags= --callback=
copyFileSync --src= --dest= --flags=
createReadStream --path= --options=
createWriteStream --path= --options=
exists --path= --callback=
existsSync --path=
...
```