Updating icon context if check as per Martins discussion point

packages/materialdesign-components/src/Button/Button.svelte

@@ -1,42 +1,36 @@
 <script>
-  import { setContext, getContext } from "svelte";
-  import Icon from "../Icon.svelte";
-  import ripple from "../Ripple.js";
-  import ClassBuilder from "../ClassBuilder.js";
+  import { setContext, getContext } from "svelte"
+  import Icon from "../Icon.svelte"
+  import ripple from "../Ripple.js"
+  import ClassBuilder from "../ClassBuilder.js"
 
-  const cb = new ClassBuilder("button", ["primary", "medium"]);
+  const cb = new ClassBuilder("button", ["primary", "medium"])
 
-  export let variant = "raised";
-  export let colour = "primary";
-  export let size = "medium";
+  export let variant = "raised"
+  export let colour = "primary"
+  export let size = "medium"
 
-  export let href = "";
-  export let icon = "";
-  export let trailingIcon = false;
-  export let fullBleed = false;
+  export let href = ""
+  export let icon = ""
+  export let trailingIcon = false
+  export let fullBleed = false
 
-  export let text = "";
-  export let disabled = false;
+  export let text = ""
+  export let disabled = false
 
-  $: if (!!icon) {
-    setContext("BBMD:icon:context", "button");
+  $: if (icon) {
+    setContext("BBMD:icon:context", "button")
   }
 
-  $: renderLeadingIcon = !!icon && !trailingIcon;
-  $: renderTrailingIcon = !!icon && trailingIcon;
+  $: renderLeadingIcon = !!icon && !trailingIcon
+  $: renderTrailingIcon = !!icon && trailingIcon
 
   let blockClasses = cb.blocks({
     modifiers: !href ? [variant] : null,
-    customs: { size, colour }
-  });
+    customs: { size, colour },
+  })
 </script>
 
-<style>
-  .fullBleed {
-    width: 100%;
-  }
-</style>
-
 <!-- TODO: Activated colour on primary elevated buttons seems to be rendering weird  -->
 {#if href}
   <a class={blockClasses} {href} on:click>
@@ -58,3 +52,9 @@
     {/if}
   </button>
 {/if}
+
+<style>
+  .fullBleed {
+    width: 100%;
+  }
+</style>