lint for perf issues with oxlint (#366)

Author: bartveneman

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v3
       - name: Lint JS
-        run: npx --yes oxlint@latest
+        run: npx --yes oxlint@latest -D perf
 
   test:
     name: Unit tests

src/values/destructure-font-shorthand.js

@@ -47,7 +47,7 @@ export function isSystemFont(node) {
  * @param {*} stringifyNode
  */
 export function destructure(value, stringifyNode) {
-	let font_family = new Array(2)
+	let font_family = Array.from({ length: 2 })
 	let font_size
 	let line_height
 
@@ -81,7 +81,7 @@ export function destructure(value, stringifyNode) {
 		) {
 			font_family[0] = node
 
-			if (!font_size && item.prev != null) {
+			if (!font_size && item.prev !== null) {
 				font_size = stringifyNode(item.prev.data)
 			}