11 lines
321 B
JavaScript
11 lines
321 B
JavaScript
// Map values in an object
|
|
const mapValues = (obj, fn) => Object.fromEntries(Object.entries(obj).map(([k, v]) => [k, fn(v)]));
|
|
|
|
// Cartesian product of a list of arrays
|
|
const product = (...arrays) => arrays.reduce((a, b) => a.flatMap(ai => b.map(bi => [...ai, bi])), [[]]);
|
|
|
|
module.exports = {
|
|
mapValues,
|
|
product,
|
|
};
|