ugh

Author: Bart Veneman

package-lock.json

@@ -28,7 +28,8 @@
   "scripts": {
     "test": "uvu",
     "lint": "oxlint",
-    "build": "microbundle"
+    "build": "microbundle",
+    "check": "tsc"
   },
   "keywords": [
     "projectwallace",
@@ -52,6 +53,7 @@
     "css-tree": "^2.3.1"
   },
   "devDependencies": {
+    "@types/css-tree": "^2.3.4",
     "microbundle": "^0.15.1",
     "oxlint": "^0.0.22",
     "uvu": "^0.5.6"

package.json

@@ -1,4 +1,5 @@
 import { strEquals, startsWith, endsWith } from '../string-utils.js'
+// @ts-expect-error CSS Tree types are incomplete
 import walk from 'css-tree/walker'
 import {
   Identifier,
@@ -16,7 +17,9 @@ import {
  * @returns true if declaratioNode is the given property: value, false otherwise
  */
 function isPropertyValue(node, property, value) {
+  if (node.value.type === 'Raw') return false
   let firstChild = node.value.children.first
+  if (firstChild === null) return false
   return strEquals(property, node.property)
     && firstChild.type === Identifier
     && strEquals(value, firstChild.name)
@@ -72,26 +75,30 @@ export function isMediaBrowserhack(prelude) {
     if (node.type === MediaFeature) {
       if (value !== null && value.unit === '\\0') {
         returnValue = true
+        // @ts-expect-error TS doesn't know about CSS Tree's walker breaking
         return this.break
       }
       if (strEquals('-moz-images-in-menus', name)
         || strEquals('min--moz-device-pixel-ratio', name)
         || strEquals('-ms-high-contrast', name)
       ) {
         returnValue = true
+        // @ts-expect-error TS doesn't know about CSS Tree's walker breaking
         return this.break
       }
       if (strEquals('min-resolution', name)
         && strEquals('.001', value.value)
         && strEquals('dpcm', value.unit)
       ) {
         returnValue = true
+        // @ts-expect-error TS doesn't know about CSS Tree's walker breaking
         return this.break
       }
       if (strEquals('-webkit-min-device-pixel-ratio', name)) {
         let val = value.value
         if ((strEquals('0', val) || strEquals('10000', val))) {
           returnValue = true
+          // @ts-expect-error TS doesn't know about CSS Tree's walker breaking
           return this.break
         }
       }