fixup! tools,doc: add support for several flavors of JS code snippets

Author: aduh95

doc/api_assets/style.css

@@ -837,4 +837,24 @@ kbd {
   #apicontent {
     overflow: hidden;
   }
+  .js-flavor-selector {
+    display: none;
+  }
+  .js-flavor-selector + * {
+    margin-bottom: 2rem;
+    padding-bottom: 2rem;
+    border-bottom: 1px solid var(--color-text-primary);
+  }
+  .js-flavor-selector ~ * {
+    display: block !important;
+    background-position: top right;
+    background-size: 142px 20px;
+    background-repeat: no-repeat;
+  }
+  .js-flavor-selector ~ .cjs {
+    background-image: url(./js-flavor-cjs.svg);
+  }
+  .js-flavor-selector ~ .esm {
+    background-image: url(./js-flavor-esm.svg);
+  }
 }