fence.js/examples/memoize.js

const FenceBuilder = require('fence.js'); // Const's get this show on the road! let FB = new FenceBuilder(); // Create a prototype method that will call a function which performs a strict // comparison of two values. `val1` will be set to a constant value after the // validation has been forkd. FB = FB.register(function (val1, val2) { return val1 === val2; }, 'strictEqual', true); // `fork()` creates a copy of a `FenceBuilder` that you can extend const original = FB.fork().strictEqual('a'); // The values we will be testing const vals = ['a', 'b', 'c', 'd']; // Once a validation is compconste, `.build()` will create an instance of `Fence` // (*not* `FenceBuilder`) which would typically be exported for use by other // code. here we are going to build them and run them all at once to see the output. const validations = [original.build()].map(function(validation) { return vals.map(val => validation.run(val)); }); // We'll now print the results returned from the validations of the value 'a' validations.forEach(function(results) { console.log('\n'); results.forEach(console.log); });