https://github.com/owenthereal/godzilla

Godzilla is a ES2015 to Go source code transpiler and runtime
https://github.com/owenthereal/godzilla

compiler es2015 golang javascript transpiler

Last synced: 27 days ago
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Godzilla is a ES2015 to Go source code transpiler and runtime

• Host: GitHub
• URL: https://github.com/owenthereal/godzilla
• Owner: owenthereal
• License: mit
• Created: 2017-05-11T21:07:13.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2017-08-07T15:36:34.000Z (about 7 years ago)
• Last Synced: 2024-05-01T23:58:42.432Z (6 months ago)
• Topics: compiler, es2015, golang, javascript, transpiler
• Language: Go
• Homepage: https://github.com/jingweno/godzilla
• Size: 98.6 KB
• Stars: 1,483
• Watchers: 36
• Forks: 31
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Godzilla: Go running JavaScript

## Overview

Godzilla is a [ES2015](http://babeljs.io/learn-es2015) to Go source code transpiler and runtime that is intended to be a near drop-in replacement for [Node.js](https://nodejs.org).

It compiles ES2015 source code to Go source code which is then compiled to native code.

The compiled Go source code is a series of calls to the Godzilla runtime, a Go library serving a similar purpose to Node.js.

Godzilla parses ES2015 source code with the awesome [babylon](https://github.com/babel/babylon).

That means at the moment Node.js is required for compilation.

As Godzilla becomes mature, `babylon` will be compiled to Go source code using Godzilla itself so that the Node.js dependency can be dropped.

**Note that Godzilla is at a very early stage and only very few language features are implemented**

[![asciicast](https://asciinema.org/a/0e2ce574fm9d23mwxmfg0jo93.png)](https://asciinema.org/a/0e2ce574fm9d23mwxmfg0jo93)

## Compiling

Make sure Go and Node.js are installed properly, then run:

```

$ make

```

## Running

```

$ echo "console.log('Hello, Godzilla')" | bin/godzilla run

Hello, Godzilla

$ echo "console.log('Hello, Godzilla')" | bin/godzilla build -o hello

$ ./hello

Hello, Godzilla

```

## Performance

There are still lots of works to get Godzilla to a stable state, but this is one preliminary benchmark for a simple script about program startup time:

```

$ echo "console.log('Hello, Godzilla')" | bin/godzilla build -o hello

$ time ./hello

Hello, Godzilla

./hello  0.00s user 0.00s system 30% cpu 0.013 total

$ echo "console.log('Hello, Godzilla')" > hello.js

$ time node hello.js

Hello, Godzilla

node hello.js  0.07s user 0.03s system 70% cpu 0.137 total

```

## Talks

You can find my GopherCon 2017 lightening talk [here](https://www.youtube.com/watch?v=zSW0nKArIvU).

## Related Arts

* [grumpy](https://github.com/google/grumpy)