Add unicorn lint rules - DOM built-in functions (#628)

- Prefer append(), remove(), replaceAll()
- Wrap nested ternaries in parenthesis

src/widgets/NumberWidget.ts

@@ -105,9 +105,9 @@ export class NumberWidget extends BaseWidget implements INumericWidget {
     // Determine if clicked on left/right arrows
     const delta = x < 40
       ? -1
-      : x > width - 40
+      : (x > width - 40
         ? 1
-        : 0
+        : 0)
 
     if (delta) {
       // Handle left/right arrow clicks
@@ -131,7 +131,7 @@ export class NumberWidget extends BaseWidget implements INumericWidget {
         // Solve the equation if possible
         try {
           v = eval(v)
-        } catch { }
+        } catch {}
       }
       const newValue = Number(v)
       if (!isNaN(newValue)) {
@@ -154,9 +154,9 @@ export class NumberWidget extends BaseWidget implements INumericWidget {
     const x = e.canvasX - node.pos[0]
     const delta = x < 40
       ? -1
-      : x > width - 40
+      : (x > width - 40
         ? 1
-        : 0
+        : 0)
 
     if (delta && (x > -3 && x < width + 3)) return