docs: snippets: update imports, add Crawlee, Actor import, etc (#425)

- update imports to ESM, add Crawlee where needed, add Actor import
- ditch Node.js/got proxy examples

Author: AndreyBykov

content/docs/about.md

@@ -13,13 +13,13 @@ Apify is an online platform specializing in [web scraping]({{@link web_scraping_
 
 [Apify Store](https://apify.com/store) includes a range of ready-made tools such as **Booking Scraper** ([dtrungtin/booking-scraper](https://apify.com/dtrungtin/booking-scraper)), **SEO Audit Tool** ([drobnikj/seo-audit-tool](https://apify.com/drobnikj/seo-audit-tool)), or the **Google Sheets Import & Export** ([lukaskrivka/google-sheets](https://apify.com/lukaskrivka/google-sheets)) tool. You can try all of these for free right now.
 
-If your needs are more specific, you can order a [custom solution](https://apify.com/custom-solutions) from [us](https://apify.com/enterprise), our partners or [Apify-approved developers](https://apify.com/marketplace).
+If your needs are more specific, you can order a [custom solution](https://apify.com/custom-solutions) from [us](https://apify.com/enterprise), our partners or [Apify-approved developers](https://apify.com/partners/freelancers).
 
 ## [](#get-started) Get started
 
 Check out [this video](https://www.youtube.com/watch?v=BsidLZKdYWQ&t=115s) on how to use our **Amazon Scraper** ([vaclavrut/amazon-crawler](https://apify.com/vaclavrut/amazon-crawler)). It introduces how web scraping can help your business and serves as a foundation on how to start using other ready-made actors.
 
-For an overview of all of Apify's features, take a [tour of the platform](https://www.youtube.com/watch?v=XPF0kbyvoOs).
+For an overview of all of Apify's features, take a [tour of the platform](https://www.youtube.com/watch?v=nn-bCRvhNUM).
 
 ### [](#tutorials) Tutorials
 

content/docs/actors/development/source_code.md

@@ -168,28 +168,30 @@ To make you actor compatible with metamorph operation use `Apify.getInput()` ins
 For example, imagine you have an actor that accepts a hotel URL on input and then internally uses the [apify/web-scraper](https://www.apify.com/apify/web-scraper) actor to scrape all the hotel reviews. The metamorphing code would look as follows:
 
 ```js
-const Apify = require('apify');
-
-Apify.main(async () => {
-    // Get input of your actor.
-    const { hotelUrl } = await Apify.getInput();
-
-    // Create input for apify/web-scraper
-    const newInput = {
-        startUrls: [{ url: hotelUrl }],
-        pageFunction: () => {
-            // Here you pass the page function that
-            // scrapes all the reviews ...
-        },
-        // ... and here would be all the additional
-        // input parameters.
-    };
-
-    // Transform the actor run to apify/web-scraper
-    // with the new input.
-    await Apify.metamorph('apify/web-scraper', newInput);
-
-    // The line here will never be reached, because the
-    // actor run will be interrupted.
-});
+import { Actor } from 'apify';
+
+await Actor.init();
+
+// Get input of your actor.
+const { hotelUrl } = await Actor.getInput();
+
+// Create input for apify/web-scraper
+const newInput = {
+    startUrls: [{ url: hotelUrl }],
+    pageFunction: () => {
+        // Here you pass the page function that
+        // scrapes all the reviews ...
+    },
+    // ... and here would be all the additional
+    // input parameters.
+};
+
+// Transform the actor run to apify/web-scraper
+// with the new input.
+await Actor.metamorph('apify/web-scraper', newInput);
+
+// The line here will never be reached, because the
+// actor run will be interrupted.
+
+await Actor.exit();
 ```

content/docs/actors/development/state_persistence.md

@@ -43,17 +43,29 @@ The [Apify SDK](https://sdk.apify.com) persists its state automatically, using t
 To persist state manually, you can use the [Apify.events](https://docs.apify.com/actors/development/state-persistence) method in the Apify SDK.
 
 ```javascript
-Apify.events.on('migrating', () => {
-    Apify.setValue('my-crawling-state', {
+import { Actor } from 'apify';
+
+await Actor.init();
+// ...
+Actor.on('migrating', () => {
+    Actor.setValue('my-crawling-state', {
         foo: 'bar',
     });
 });
+// ...
+await Actor.exit();
 ```
 
 To check for state saved in a previous run, use:
 
 ```javascript
-const previousCrawlingState = await Apify.getValue('my-crawling-state') || {};
+import { Actor } from 'apify';
+
+await Actor.init();
+// ...
+const previousCrawlingState = await Actor.getValue('my-crawling-state') || {};
+// ...
+await Actor.exit();
 ```
 
 To improve your actor's performance, you can also [cache repeated page data]({{@link tutorials/cache_data_to_improve_performance.md}}).

content/docs/actors/running.md

@@ -51,12 +51,16 @@ Actors can also be invoked programmatically from other actors:
 ```marked-tabs
 
 <marked-tab header="NodeJS" lang="javascript">
+import { Actor } from 'apify';
 
-const run = await Apify.call('apify/hello-world', {
+await Actor.init();
+// ...
+const run = await Actor.call('apify/hello-world', {
     message: 'Hello!',
 });
 console.dir(run.output);
-
+// ...
+await Actor.exit();
 </marked-tab>
 
 
@@ -133,8 +137,10 @@ The web server running inside the container must listen at the port defined by t
 The following example demonstrates how to start a simple web server in your actor:
 
 ```js
-const Apify = require('apify');
-const express = require('express');
+import { Actor } from 'apify';
+import express from 'express';
+
+await Actor.init();
 
 const app = express();
 const port = process.env.APIFY_CONTAINER_PORT;
@@ -147,10 +153,10 @@ app.listen(port, () => console.log(`Web server is listening
     and can be accessed at
     ${process.env.APIFY_CONTAINER_URL}!`));
 
-Apify.main(async () => {
-    // Let the actor run for an hour.
-    await Apify.utils.sleep(60 * 60 * 1000);
-});
+// Let the actor run for an hour.
+await new Promise(r => setTimeout(r, 60 * 60 * 1000));
+
+await Actor.exit();
 ```
 
 ## Data retention