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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-iterable/unique. Try it out:
const iterable = require("extra-iterable");
var x = [1, 2, 3, 4, 2, 3];
[...iterable.unique(x)];
var x = [1, 2, 3, 4, -2, -3];
[...iterable.unique(x)];
[...iterable.unique(x, (a, b) => Math.abs(a) - Math.abs(b))];
[...iterable.unique(x, null, v => Math.abs(v))];
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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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