Make pages as a page object

e2e/lib/JSONOptionPage.ts

@@ -0,0 +1,22 @@
+import { Lanthan } from 'lanthan';
+import { WebDriver, By } from 'selenium-webdriver';
+
+export default class JSONOptionPage {
+  private webdriver: WebDriver;
+
+  constructor(lanthan: Lanthan) {
+    this.webdriver = lanthan.getWebDriver();
+  }
+
+  async updateSettings(value: string): Promise<void> {
+    let textarea = await this.webdriver.findElement(By.css('textarea'));
+    await this.webdriver.executeScript(`document.querySelector('textarea').value = '${value}'`)
+    await textarea.sendKeys(' ');
+    await this.webdriver.executeScript(() => document.querySelector('textarea')!!.blur());
+  }
+
+  async getErrorMessage(): Promise<string> {
+    let error = await this.webdriver.findElement(By.css('.settings-ui-input-error'));
+    return error.getText();
+  }
+}