Eslint rule updates (#673)

* Install unicorn

* Add rules

* Fix issues

* Install sonarjs

* Set up rules

* Fix issues

* Install eslint-plugin-import and fix import extensions

* Simplify permitted error names

1 files changed, 4 insertions, 6 deletions

diff --git a/test/dom-text-scanner.test.js b/test/dom-text-scanner.test.js
index e86d2980..1ec7cab7 100644
--- a/test/dom-text-scanner.test.js
+++ b/test/dom-text-scanner.test.js
@@ -34,7 +34,7 @@ function querySelectorTextNode(element, selector) {
     let textIndex = -1;
     const match = /::text$|::nth-text\((\d+)\)$/.exec(selector);
     if (match !== null) {
-        textIndex = (match[1] ? parseInt(match[1], 10) - 1 : 0);
+        textIndex = (match[1] ? Number.parseInt(match[1], 10) - 1 : 0);
         selector = selector.substring(0, selector.length - match[0].length);
     }
     const result = element.querySelector(selector);
@@ -67,13 +67,11 @@ function getComputedFontSizeInPixels(window, getComputedStyle, element) {
         if (element.nodeType === window.Node.ELEMENT_NODE) {
             const fontSize = getComputedStyle(/** @type {Element} */ (element)).fontSize;
             if (fontSize.endsWith('px')) {
-                const value = parseFloat(fontSize.substring(0, fontSize.length - 2));
-                return value;
+                return Number.parseFloat(fontSize.substring(0, fontSize.length - 2));
             }
         }
     }
-    const defaultFontSize = 14;
-    return defaultFontSize;
+    return 14; // Default font size
 }
 
 /**
@@ -92,7 +90,7 @@ function createAbsoluteGetComputedStyle(window) {
                 if (typeof result === 'string') {
                     result = result.replace(/([-+]?\d(?:\.\d)?(?:[eE][-+]?\d+)?)em/g, (g0, g1) => {
                         const fontSize = getComputedFontSizeInPixels(window, getComputedStyleOld, element);
-                        return `${parseFloat(g1) * fontSize}px`;
+                        return `${Number.parseFloat(g1) * fontSize}px`;
                     });
                 }
                 return result;