Fix possible wrong encoding

lib/index.js

@@ -47,7 +47,7 @@ class PuppeteerPlugin {
 					await blockNavigation(page, url);
 				}
 
-				await page.goto(url, this.gotoOptions);
+				const puppeteerResponse = await page.goto(url, this.gotoOptions);
 
 				if (this.scrollToBottom) {
 					await scrollToBottom(page, this.scrollToBottom.timeout, this.scrollToBottom.viewportN);
@@ -56,10 +56,12 @@ class PuppeteerPlugin {
 				const content = await page.content();
 				await page.close();
 
-				// convert utf-8 -> binary string because website-scraper needs binary
-				return Buffer.from(content).toString('binary');
+				const encoding = extractEncodingFromHeader(puppeteerResponse.headers());
+				const body = Buffer.from(content).toString(encoding);
+
+				return { body, encoding };
 			} else {
-				return response.body;
+				return { body: response.body };
 			}
 		});
 
@@ -91,4 +93,10 @@ async function blockNavigation (page, url) {
 	await page.setRequestInterception(true);
 }
 
+function extractEncodingFromHeader (headers) {
+	const contentTypeHeader = headers['content-type'];
+
+	return contentTypeHeader && contentTypeHeader.includes('utf-8') ? 'utf8' : 'binary';
+}
+
 export default PuppeteerPlugin;

test/mock/index.html

@@ -17,7 +17,7 @@
 		 * with cheerio and website-scraper itself.
 		 * See https://github.com/cheeriojs/cheerio/pull/2280
 		 */
-		document.getElementById('special-characters-test').innerText = '7년 동안 한국에서 살았어요. Слава Україні!';
+		document.getElementById('special-characters-test').innerText = '7년 동안 한국에서 살았어요. Слава Україні! 磁致伸缩位移传感器 影响大跨度桥梁施工控制的因素';
 	};
 </script>
 

test/puppeteer-plugin.test.js

@@ -39,7 +39,7 @@ describe('Puppeteer plugin test', () => {
 		});
 
 		it('should render special characters correctly', async () => {
-			expect(content).to.contain('<div id="special-characters-test">7년 동안 한국에서 살았어요. Слава Україні!</div>');
+			expect(content).to.contain('<div id="special-characters-test">7년 동안 한국에서 살았어요. Слава Україні! 磁致伸缩位移传感器 影响大跨度桥梁施工控制的因素</div>');
 		});
 	});