use utility function in aria-tooltip-name

Co-authored-by: Michiel Pauw <[email protected]>
Co-authored-by: onkar75 <[email protected]>

src/rules/aria-tooltip-name.ts

@@ -1,36 +1,11 @@
 import { AccessibilityError } from "../scanner";
-import { labelledByIsValid, querySelectorAll } from "../utils";
+import { hasAccessibleText, querySelectorAll } from "../utils";
 
 // Metadata
 const id = "aria-tooltip-name";
 const text = "ARIA tooltip must have an accessible name";
 const url = `https://dequeuniversity.com/rules/axe/4.4/${id}?application=RuleDescription`;
 
-/**
- * Make sure that a elements text is "visible" to a screenreader user.
- *
- * - Inner text that is discernible to screen reader users.
- * - Non-empty aria-label attribute.
- * - aria-labelledby pointing to element with text which is discernible to screen reader users.
- */
-function hasAccessibleText(el: Element): boolean {
-  if (el.hasAttribute("aria-label")) {
-    return el.getAttribute("aria-label")!.trim() !== "";
-  }
-
-  if (!labelledByIsValid(el)) return false;
-
-  if (el.getAttribute("title")) {
-    return el.getAttribute("title")!.trim() !== "";
-  }
-
-  if (el.textContent) {
-    return el.textContent.trim() !== "";
-  }
-
-  return true;
-}
-
 export function ariaTooltipName(el: Element): AccessibilityError[] {
   const errors = [];
   const tooltips = querySelectorAll("[role=tooltip]", el);