Apify Upgrade & Migration Skill

Apify Upgrade & Migration

Overview

Guide for upgrading apify, apify-client, and crawlee packages. The biggest migration in Apify's history was SDK v2 to v3, which split crawling functionality into the crawlee package. This skill covers that migration plus general upgrade procedures.

Prerequisites

Git branch for the upgrade
Test suite available
Current versions documented

Instructions

Step 1: Check Current Versions

# Check installed versions
npm list apify apify-client crawlee 2>/dev/null

# Check latest available versions
npm view apify version
npm view apify-client version
npm view crawlee version

# Check for outdated packages
npm outdated apify apify-client crawlee

Step 2: Create Upgrade Branch

git checkout -b upgrade/apify-packages

Step 3: Upgrade Packages

# Upgrade to latest
npm install apify@latest crawlee@latest apify-client@latest

# Or upgrade to specific version
npm install apify@3.2.0 crawlee@3.11.0

# Check for peer dependency issues
npm ls 2>&1 | grep "ERESOLVE\|peer dep"

Step 4: Run Tests and Fix Issues

npm test
npm run build  # Catch TypeScript errors

Major Migration: Apify SDK v2 to v3 (Crawlee Split)

This is the most common migration. In v3, crawling code moved to crawlee.

Import Changes

// ---- BEFORE (SDK v2) ----
import Apify from 'apify';
const { CheerioCrawler, PlaywrightCrawler, log } = Apify;

// ---- AFTER (SDK v3 + Crawlee) ----
import { Actor } from 'apify';
import { CheerioCrawler, PlaywrightCrawler, log } from 'crawlee';

Initialization Changes

// ---- BEFORE (v2) ----
Apify.main(async () => {
  const input = await Apify.getInput();
  const dataset = await Apify.openDataset();
  await Apify.pushData({ url: 'https://example.com' });
  await Apify.setValue('OUTPUT', { done: true });
});

// ---- AFTER (v3) ----
await Actor.main(async () => {
  const input = await Actor.getInput();
  const dataset = await Actor.openDataset();
  await Actor.pushData({ url: 'https://example.com' });
  await Actor.setValue('OUTPUT', { done: true });
});

Crawler Configuration Changes

// ---- BEFORE (v2) ----
const crawler = new Apify.CheerioCrawler({
  handlePageFunction: async ({ request, $ }) => {
    // ...
  },
  handleFailedRequestFunction: async ({ request }) => {
    // ...
  },
});

// ---- AFTER (v3 / Crawlee) ----
const crawler = new CheerioCrawler({
  requestHandler: async ({ request, $ }) => {
    // renamed from handlePageFunction
  },
  failedRequestHandler: async ({ request }, error) => {
    // renamed from handleFailedRequestFunction
    // error is now second argument
  },
});

Proxy Configuration Changes

// ---- BEFORE (v2) ----
const proxyConfiguration = await Apify.createProxyConfiguration({
  groups: ['RESIDENTIAL'],
});

// ---- AFTER (v3) ----
const proxyConfiguration = await Actor.createProxyConfiguration({
  groups: ['RESIDENTIAL'],
});

Request Queue Changes

// ---- BEFORE (v2) ----
const requestQueue = await Apify.openRequestQueue();
await requestQueue.addRequest({ url: 'https://example.com' });

// ---- AFTER (v3) ----
// Option A: Use enqueueLinks in crawler (preferred)
await enqueueLinks({ strategy: 'same-domain' });

// Option B: Open queue directly
const requestQueue = await Actor.openRequestQueue();
await requestQueue.addRequest({ url: 'https://example.com' });

Router Pattern (New in v3)

// v3 introduced explicit routers (replaces label-based if/else)
import { createCheerioRouter } from 'crawlee';

const router = createCheerioRouter();

router.addDefaultHandler(async ({ request, $, enqueueLinks }) => {
  // Handle listing pages
  await enqueueLinks({ selector: 'a.detail', label: 'DETAIL' });
});

router.addHandler('DETAIL', async ({ request, $ }) => {
  // Handle detail pages
  await Actor.pushData({ url: request.url, title: $('h1').text() });
});

const crawler = new CheerioCrawler({ requestHandler: router });

apify-client Upgrade Notes

The apify-client package has been more stable. Key changes across versions:

// v1.x → v2.x: Constructor changed
// Before
const { ApifyClient } = require('apify-client');
const client = new ApifyClient({ userId: 'xxx', token: 'yyy' });

// After (v2+): userId removed, just token
const client = new ApifyClient({ token: 'yyy' });

// Method chaining style (consistent since v2)
const run = await client.actor('username/actor').call(input);
const { items } = await client.dataset(run.defaultDatasetId).listItems();

Upgrade Verification Script

// verify-upgrade.ts — run after upgrading
import { Actor } from 'apify';
import { CheerioCrawler, log } from 'crawlee';
import { ApifyClient } from 'apify-client';

async function verifyUpgrade() {
  const checks: { name: string; pass: boolean; error?: string }[] = [];

  // Check 1: Imports work
  checks.push({ name: 'Actor import', pass: typeof Actor.init === 'function' });
  checks.push({ name: 'CheerioCrawler import', pass: typeof CheerioCrawler === 'function' });
  checks.push({ name: 'ApifyClient import', pass: typeof ApifyClient === 'function' });

  // Check 2: Client connects
  try {
    const client = new ApifyClient({ token: process.env.APIFY_TOKEN });
    const user = await client.user().get();
    checks.push({ name: 'API connection', pass: !!user.username });
  } catch (err) {
    checks.push({ name: 'API connection', pass: false, error: (err as Error).message });
  }

  // Check 3: Crawler instantiates
  try {
    const crawler = new CheerioCrawler({
      requestHandler: async () => {},
    });
    checks.push({ name: 'Crawler instantiation', pass: true });
  } catch (err) {
    checks.push({ name: 'Crawler instantiation', pass: false, error: (err as Error).message });
  }

  // Report
  console.log('\n=== Upgrade Verification ===');
  for (const check of checks) {
    const status = check.pass ? 'PASS' : 'FAIL';
    console.log(`  [${status}] ${check.name}${check.error ? ` — ${check.error}` : ''}`);
  }

  const allPassed = checks.every(c => c.pass);
  console.log(`\n${allPassed ? 'All checks passed.' : 'Some checks failed!'}`);
  process.exit(allPassed ? 0 : 1);
}

verifyUpgrade();

Rollback Procedure

# Revert to previous versions
npm install apify@3.1.0 crawlee@3.10.0 apify-client@2.9.0 --save-exact

# Or restore from lock file
git checkout main -- package-lock.json
npm ci

# On the platform: roll back Actor build
# Console > Actor > Builds > select previous build > Set as default

Error Handling

| Error | Cause | Solution | |-------|-------|----------| | handlePageFunction is not valid | Using v2 option names in v3 | Rename to requestHandler | | Apify.main is not a function | v2 default export removed | Import { Actor } from apify | | Cannot find module 'crawlee' | Crawlee not installed | npm install crawlee | | Type errors after upgrade | Changed interfaces | Check release notes for type changes |

Resources

Next Steps

For CI integration during upgrades, see apify-ci-integration.

Agent Skills: Apify Upgrade & Migration

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