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  • License MIT

Rust like enum, Result and Option for javascript

Package Exports

  • rusted

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (rusted) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

npm version Coverage Status Build Status

rusted

Rust-like enum, Result, Option, impl and match for javascript.

Install

npm install rusted

Example

These examples require es6 transpiler.

enum

enum Message {
    Quit,
    ChangeColor(i32,i32,i32),
    Move {x:i32, y:i32},
    Write(String),
}

let x: Message = Message::Move { x: 3, y: 4 };
let y: Message = Message::Quit;

the above could written as below

import {Enum} from 'rusted';

let Message=Enum({
    Quit:null,
    ChangeColor:[0,0,0],
    Move:{x:0,y:0},
    Write:''
});
let x=Message.Move({x:3,y:4});
let y=Message.Quit;

Result

import {Ok,Err,match} from 'rusted';

function Foo(x){
    if(x>5){
        return Ok(x);
    }else{
        return Err('Less than 5 !');
    }
}

console.log(match(Foo(3),{
    Ok:x=>x,
    Err:e=>e
}));
// > Less than 5 !

console.log(Foo(10).unwrap());
// > 10
console.log(Foo(3).unwrap());
// throws error

(es5 version.)

var rusted=require('rusted'),
    Ok=rusted.Ok,
    Err=rusted.Err,
    match=rusted.match;

function Foo(x){
    if(x>5){
        return Ok(x);
    }else{
        return Err('Less than 5 !');
    }
}

console.log(match(Foo(3),{
    Ok:function(x){
        return x;
    },
    Err:function(e){
        return e;
    }
}));

console.log(Foo(10).unwrap());
console.log(Foo(3).unwrap());

License

MIT