Calculate hash from file path in Node v10 or later

calc-hash.ts

import * as fs from 'fs';
import * as crypto from 'crypto';
import * as stream from 'stream';
import * as util from 'util';

const pipeline = util.promisify(stream.pipeline);

export async function calcHash(path: string, algorithm: 'md5' | 'sha1' | 'sha256' = 'md5') {
	const hash = crypto.createHash(algorithm).setEncoding('hex');
	await pipeline(fs.createReadStream(path), hash);
	return hash.read();
}