async-object-context v0.0.1

async-object-context

There are cases where you want a chainable context, but you also don't want to choose between promises or callbacks, you don't want a broken call stack, and you don't want to have an extra function on the chain. That's where this library comes in.

Usage

let count = 0;
let context = {
    fn : (options, cb)=>{
        count++;
        setTimeout(()=>{
            cb(null, count)
        })
    }
}
const ac = require('async-context');
let chain = ac.Context.wrap(context);
// chain now proxies calls into context, work is sequential, by queue
chain.fn({}).fn({}).fn({}).fn({}, (err, value)=>{
    //value === 4
});

chain.fn({}).promise.then((value)=>{
    //value === 1
});

(async ()=>{
    try{
        return await chain.fn({}).fn({}).fn({}).promise;
    }catch(ex){
        //handle the exception
    }
})().then((result)=>{
    //value === 3
}).catch(()=>{
    //another chance to catch the same exception, if we didn't in the lower scope
});