feat: add embedchain javascript package (#576)

embedchain-js/embedchain/loaders/WebPage.ts

@@ -0,0 +1,51 @@
+import axios from 'axios';
+import { JSDOM } from 'jsdom';
+
+import { cleanString } from '../utils';
+import { BaseLoader } from './BaseLoader';
+
+class WebPageLoader extends BaseLoader {
+  // eslint-disable-next-line class-methods-use-this
+  async loadData(url: string) {
+    const response = await axios.get(url);
+    const html = response.data;
+    const dom = new JSDOM(html);
+    const { document } = dom.window;
+    const unwantedTags = [
+      'nav',
+      'aside',
+      'form',
+      'header',
+      'noscript',
+      'svg',
+      'canvas',
+      'footer',
+      'script',
+      'style',
+    ];
+    unwantedTags.forEach((tagName) => {
+      const elements = document.getElementsByTagName(tagName);
+      Array.from(elements).forEach((element) => {
+        // eslint-disable-next-line no-param-reassign
+        (element as HTMLElement).textContent = ' ';
+      });
+    });
+
+    const output = [];
+    let content = document.body.textContent;
+    if (!content) {
+      throw new Error('Web page content is empty.');
+    }
+    content = cleanString(content);
+    const metaData = {
+      url,
+    };
+    output.push({
+      content,
+      metaData,
+    });
+    return output;
+  }
+}
+
+export { WebPageLoader };