const chunk = (arr, size) => arr.reduce((acc, e, i) => (i % size ? acc[acc.length - 1].push(e) : acc.push([e]), acc), []);
// Examples
chunk([1, 2, 3, 4, 5, 6, 7, 8], 3); // [[1, 2, 3], [4, 5, 6], [7, 8]]
chunk([1, 2, 3, 4, 5, 6, 7, 8], 4); // [[1, 2, 3, 4], [5, 6, 7, 8]]function splitArrayIntoChunksOfLen(arr, len) {
var chunks = [], i = 0, n = arr.length;
while (i < n) {
chunks.push(arr.slice(i, i += len));
}
return chunks;
}
var alphabet=['a','b','c','d','e','f'];
var alphabetPairs=splitArrayIntoChunksOfLen(alphabet,2); //split into chunks of twoconst fs = require('fs').promises;
(async () => {
const files = (await fs.readdir('.')).filter(a => a.endsWith('.part'));
const parts = [];
for(const file of files)
parts.push(await fs.readFile(file));
await fs.writeFile('All parts', Buffer.concat(parts));
})().catch(console.log);const fs = require('fs').promises;
(async () => {
const files = (await fs.readdir('.')).filter(a => a.endsWith('.part'));
const parts = [];
for(const file of files)
parts.push(await fs.readFile(file));
await fs.writeFile('All parts', Buffer.concat(parts));
})().catch(console.log);