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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/scan-while. Try it out:
const iterable = require("extra-iterable");
var x = [1, 1, 2, 2, 3, 3, 4, 4];
iterable.scanWhile(x, v => v % 2 !== 0);
iterable.scanWhile(x, v => v % 3 !== 0);
iterable.scanWhile(x, v => v % 6 !== 0);
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