Javascript experiment with functional composition allowing arbitrary number of composed functions through ES6, closure and tail recursion.

functional composition

// experiment of functional composition 


const addOne = a => a + 1;
const double = a => a * 2;
const square = a => a * a;

const lCompose = (...args) => {

    const _lCompose = ( acc, ...args ) => {
        //base case, return acc
        if ( !args.length ) {
            console.log('acc', acc)
            return acc;
        } else {
            // recurse, shift ...args and call head(acc)
            const [head, ...tail] = args;
            return _lCompose ( head(acc), ...tail )
        }
    }
    
    return (initV) => {
        return _lCompose(initV, ...args)
    } 
}
let trans = lCompose(addOne, double, square);
let m = trans(5, 5)