refactor: migrate Appium helper to ESM

- Convert require() to import statements
- Change webdriverio from dynamic require to static import
- Import webdriverio as namespace (import * as webdriverio)
- Import all dependencies at the top of the file:
  - ElementNotFound from './errors/ElementNotFound.js'
  - dontSeeElementError from './errors/ElementAssertion.js'
- Remove inline require statements from methods:
  - dontSeeElement()
  - seeElement()
  - waitForVisible()
  - waitForInvisible()
- Use Locator.build() instead of new Locator() for ESM compatibility
- Maintain export default Appium at the end
- All imports use .js extensions for ESM compliance

Verified:
- Module loads successfully
- No require() statements remaining
- Tests run without errors

Author: kobenguyent

lib/helper/Appium.js

@@ -1,5 +1,4 @@
-let webdriverio
-
+import * as webdriverio from 'webdriverio'
 import fs from 'fs'
 import axios from 'axios'
 import { v4 as uuidv4 } from 'uuid'
@@ -10,6 +9,8 @@ import { truth } from '../assert/truth.js'
 import recorder from '../recorder.js'
 import Locator from '../locator.js'
 import ConnectionRefused from './errors/ConnectionRefused.js'
+import ElementNotFound from './errors/ElementNotFound.js'
+import { dontSeeElementError } from './errors/ElementAssertion.js'
 
 const mobileRoot = '//*'
 const webRoot = 'body'
@@ -181,7 +182,6 @@ class Appium extends Webdriver {
     this.appiumV2 = config.appiumV2 || true
     this.axios = axios.create()
 
-    webdriverio = require('webdriverio')
     if (!config.appiumV2) {
       console.log('The Appium core team does not maintain Appium 1.x anymore since the 1st of January 2022. Appium 2.x is used by default.')
       console.log('More info: https://bit.ly/appium-v2-migration')
@@ -1549,11 +1549,9 @@ class Appium extends Webdriver {
     // For mobile native apps, use safe isDisplayed wrapper
     const parsedLocator = parseLocator.call(this, locator)
     const res = await this._locate(parsedLocator, false)
-    const { truth } = require('../assert/truth')
-    const Locator = require('../locator')
 
     if (!res || res.length === 0) {
-      return truth(`elements of ${new Locator(parsedLocator)}`, 'to be seen').negate(false)
+      return truth(`elements of ${Locator.build(parsedLocator)}`, 'to be seen').negate(false)
     }
 
     const selected = []
@@ -1563,7 +1561,7 @@ class Appium extends Webdriver {
     }
 
     try {
-      return truth(`elements of ${new Locator(parsedLocator)}`, 'to be seen').negate(selected)
+      return truth(`elements of ${Locator.build(parsedLocator)}`, 'to be seen').negate(selected)
     } catch (err) {
       throw err
     }
@@ -1714,10 +1712,6 @@ class Appium extends Webdriver {
     // For mobile native apps, use safe isDisplayed wrapper
     const parsedLocator = parseLocator.call(this, locator)
     const res = await this._locate(parsedLocator, true)
-    const ElementNotFound = require('./errors/ElementNotFound')
-    const { truth } = require('../assert/truth')
-    const { dontSeeElementError } = require('./errors/ElementAssertion')
-    const Locator = require('../locator')
 
     if (!res || res.length === 0) {
       throw new ElementNotFound(parsedLocator)
@@ -1730,7 +1724,7 @@ class Appium extends Webdriver {
     }
 
     try {
-      return truth(`elements of ${new Locator(parsedLocator)}`, 'to be seen').assert(selected)
+      return truth(`elements of ${Locator.build(parsedLocator)}`, 'to be seen').assert(selected)
     } catch (e) {
       dontSeeElementError(parsedLocator)
     }
@@ -1784,7 +1778,6 @@ class Appium extends Webdriver {
     // For mobile native apps, use safe isDisplayed wrapper
     const parsedLocator = parseLocator.call(this, locator)
     const aSec = sec || this.options.waitForTimeoutInSeconds
-    const Locator = require('../locator')
 
     return this.browser.waitUntil(
       async () => {
@@ -1801,7 +1794,7 @@ class Appium extends Webdriver {
       },
       {
         timeout: aSec * 1000,
-        timeoutMsg: `element (${new Locator(parsedLocator)}) still not visible after ${aSec} sec`,
+        timeoutMsg: `element (${Locator.build(parsedLocator)}) still not visible after ${aSec} sec`,
       },
     )
   }
@@ -1816,7 +1809,6 @@ class Appium extends Webdriver {
     // For mobile native apps, use safe isDisplayed wrapper
     const parsedLocator = parseLocator.call(this, locator)
     const aSec = sec || this.options.waitForTimeoutInSeconds
-    const Locator = require('../locator')
 
     return this.browser.waitUntil(
       async () => {
@@ -1831,7 +1823,7 @@ class Appium extends Webdriver {
 
         return selected.length === 0
       },
-      { timeout: aSec * 1000, timeoutMsg: `element (${new Locator(parsedLocator)}) still visible after ${aSec} sec` },
+      { timeout: aSec * 1000, timeoutMsg: `element (${Locator.build(parsedLocator)}) still visible after ${aSec} sec` },
     )
   }