random-function

Create a function that when executed, calls a function randomly based on a given weighted array of functions.

Installation

npm install -S random-function

Usage

import randomFunction from 'random-function';

// --- DEMO 1: create a "balancedGreet()" function
const balancedGreet = randomFunction([
    { weight: 100, fn: name => `Hello ${name}` },
    { weight: 100, fn: name => `Have a nice day ${name}` },
    { weight: 100, fn: name => `Wassup ${name}`},
    name => `Hi ${name}`, // just specify a function as a shorthand (weight auto-set to 100)  
]);
// each of the 4 greeting functions has an equal chance of being called each time 
// balancedGreet() is called 
balancedGreet('Bob');

// --- DEMO 2: create a "weightedGreet()" function 
const weightedGreet = randomFunction([
    { weight: 50, fn: name => `Hello ${name}` },
    { weight: 25, fn: name => `Have a nice day ${name}` },
    { weight: 25, fn: name => `Wassup ${name}`},
]);
// "Hello" has 50% chance of being called, while the other 2 functions has 25% each 
weightedGreet('Bob');

Test Coverage

Test coverage report.

History

v0.0.1 (29 Dec 2016) - First version.