pixiv.js

const PixivApi = require('pixiv-api-client');
const pixiv = new PixivApi();

//insert there your export from pixivutil2 (option e) in an array: [id1, id2, id3]
const bms = [11]

var http = require('http');

var server = http.createServer(function(req, res) {
res.writeHead(200);
res.end('Hi everybody!');
var min = 2000
var max = 5000

pixiv.login('username', 'password', true).then(() => {
	(function loop(i) {
    	if (i < bms.length) new Promise((resolve, reject) => {
        	console.log(i, bms[i]);
        	setTimeout( () => {
	    		// pixiv.unfollowUser(bms[i]);
	    		pixiv.followUser(bms[i], 'public');
           		resolve();
        	}, Math.random() * (max - min) + min);
    	}).then(loop.bind(null, i+1));
	})(0);
});

pixiv.logout();
});
server.listen(8081);