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https://github.com/ddliu/motto
Nodejs module environment in golang(based on otto)
https://github.com/ddliu/motto
golang javascript nodejs npm otto
Last synced: 4 days ago
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Nodejs module environment in golang(based on otto)
- Host: GitHub
- URL: https://github.com/ddliu/motto
- Owner: ddliu
- License: mit
- Created: 2014-06-19T10:10:17.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2020-03-08T03:41:19.000Z (almost 5 years ago)
- Last Synced: 2024-12-11T12:23:59.328Z (12 days ago)
- Topics: golang, javascript, nodejs, npm, otto
- Language: JavaScript
- Homepage:
- Size: 49.8 KB
- Stars: 94
- Watchers: 6
- Forks: 25
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# motto
[](https://travis-ci.org/ddliu/motto)
Modular [otto](https://github.com/robertkrimen/otto)
Motto provide a Nodejs like module environment to run javascript files in golang.
## Installation
```bash
go get github.com/ddliu/motto
```
## Usage
```js
var _ = require('underscore');
var data = require('./data.json'); // [3, 2, 1, 4, 6]
module.exports = _.min(data);
```
```go
package main
import (
"github.com/ddliu/motto"
_ "github.com/ddliu/motto/underscore"
)
func main() {
motto.Run("path/to/index.js")
}
```
You can also install the motto command line tool to run it directly:
```bash
go install github.com/ddliu/motto/motto
motto path/to/index.js
```
## Modules
The module environment is almost capable with Nodejs [spec](http://nodejs.org/api/modules.html).
Some Nodejs modules(without core module dependencies) can be used directly in Motto.
## Addons
Motto can be extended with addons, below is an example addon which implement part of the "fs" module of Nodejs:
```go
package fs
import (
"github.com/ddliu/motto"
"github.com/robertkrimen/otto"
)
func fsModuleLoader(vm *motto.Motto) (otto.Value, error) {
fs, _ := vm.Object(`({})`)
fs.Set("readFileSync", func(call otto.FunctionCall) otto.Value {
filename, _ := call.Argument(0).ToString()
bytes, err := ioutil.ReadFile(filename)
if err != nil {
return otto.UndefinedValue()
}
v, _ := call.Otto.ToValue(string(bytes))
return v
})
return vm.ToValue(fs)
}
func init() {
motto.AddModule("fs", fsModuleLoader)
}
```
After import this package, you can `require` it directly in your js file:
```js
var fs = require('fs');
var content = fs.readFileSync('/path/to/data');
```
## Nodejs in Golang?
[nodego](https://github.com/ddliu/nodego) implements some features and core modules
of Nodejs.
## Performance
Simple benchmark shows below for furthur performance optimize:
```bash
strace -c -Ttt motto tests/index.js
strace -c -Ttt node tests/index.js
```
Motto:
```
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
20.20 0.000144 2 59 rt_sigaction
15.71 0.000112 7 15 mmap
11.92 0.000085 11 8 futex
10.10 0.000072 6 13 4 stat
7.43 0.000053 7 8 read
5.89 0.000042 21 2 clone
5.75 0.000041 10 4 open
4.77 0.000034 7 5 rt_sigprocmask
4.63 0.000033 33 1 execve
3.23 0.000023 12 2 write
2.24 0.000016 4 4 fstat
1.82 0.000013 3 4 close
1.82 0.000013 13 1 sched_getaffinity
1.68 0.000012 12 1 sched_yield
0.98 0.000007 7 1 munmap
0.98 0.000007 7 1 arch_prctl
0.42 0.000003 3 1 getcwd
0.42 0.000003 3 1 sigaltstack
------ ----------- ----------- --------- --------- ----------------
100.00 0.000713 131 4 total
```
Nodejs:
```
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
20.15 0.000636 7 92 mmap
17.78 0.000561 16 36 munmap
13.97 0.000441 18 24 read
7.73 0.000244 7 35 mprotect
7.70 0.000243 15 16 brk
7.32 0.000231 7 34 1 futex
4.56 0.000144 7 22 open
3.61 0.000114 5 22 15 ioctl
2.15 0.000068 3 21 close
2.03 0.000064 3 21 fstat
2.00 0.000063 5 14 14 access
1.58 0.000050 4 12 lstat
1.24 0.000039 8 5 write
1.24 0.000039 6 7 rt_sigaction
1.05 0.000033 6 6 2 stat
0.89 0.000028 28 1 readlink
0.76 0.000024 5 5 rt_sigprocmask
0.70 0.000022 6 4 getcwd
0.67 0.000021 11 2 pipe2
0.63 0.000020 20 1 clone
0.38 0.000012 6 2 getrlimit
0.29 0.000009 9 1 epoll_create1
0.25 0.000008 8 1 eventfd2
0.22 0.000007 7 1 clock_gettime
0.22 0.000007 4 2 epoll_ctl
0.19 0.000006 6 1 gettid
0.19 0.000006 6 1 set_tid_address
0.19 0.000006 6 1 set_robust_list
0.13 0.000004 4 1 execve
0.10 0.000003 3 1 arch_prctl
0.10 0.000003 3 1 epoll_wait
------ ----------- ----------- --------- --------- ----------------
100.00 0.003156 393 32 total
```
## Changelog
### v0.1.0 (2014-06-22)
Initial release
### v0.2.0 (2014-06-24)
Make module capable with Nodejs
### v0.3.0 (2014-06-26)
Rewrite module.
Make it easier to write addons.
Add underscore addon as an example.