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This is a playground to test code. It runs a full Node.js environment and already has all of npm’s 1,000,000+ packages pre-installed, including @extra-lists/filter. Try it out:
const lists = require('extra-lists');
var x = [['a', 'b', 'c', 'd', 'e'], [1, 2, 3, 4, 5]];
lists.filter(x, v => v % 2 === 1);
lists.filter(x, v => v % 2 === 0);
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require()any package directly from npm- use arrow functions, classes, template strings, and most of ES6
awaitany promise instead of using callbacks (example)- create your own embedded node.js snippets
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