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17 lines
543 B
17 lines
543 B
1 year ago
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// Map values in an object
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const mapValues = (obj, fn) => Object.fromEntries(Object.entries(obj).map(([k, v]) => [k, fn(v)]));
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// Array of number or bigint
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const max = (...values) => values.slice(1).reduce((x, y) => (x > y ? x : y), values[0]);
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const min = (...values) => values.slice(1).reduce((x, y) => (x < y ? x : y), values[0]);
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// Cartesian product of a list of arrays
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const product = (...arrays) => arrays.reduce((a, b) => a.flatMap(ai => b.map(bi => [...ai, bi])), [[]]);
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module.exports = {
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mapValues,
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max,
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min,
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product,
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};
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