Merge pull request #3439 from almaz-khan/master

Fixed unnecessarily style properties update

src/compiler/compile/render_dom/wrappers/Element/StyleAttribute.ts

@@ -35,8 +35,7 @@ export default class StyleAttributeWrapper extends AttributeWrapper {
 							} else {
 								const snippet = chunk.render();
 
-								add_to_set(prop_dependencies, chunk.dependencies);
-
+								add_to_set(prop_dependencies, chunk.dynamic_dependencies());
 								return chunk.get_precedence() <= 13 ? `(${snippet})` : snippet;
 							}
 						})

test/js/samples/inline-style-without-updates/expected.js

@@ -0,0 +1,47 @@
+/* generated by Svelte vX.Y.Z */
+import {
+	SvelteComponent,
+	detach,
+	element,
+	init,
+	insert,
+	noop,
+	safe_not_equal,
+	set_style
+} from "svelte/internal";
+
+function create_fragment(ctx) {
+	var div;
+
+	return {
+		c() {
+			div = element("div");
+			set_style(div, "color", color);
+		},
+
+		m(target, anchor) {
+			insert(target, div, anchor);
+		},
+
+		p: noop,
+		i: noop,
+		o: noop,
+
+		d(detaching) {
+			if (detaching) {
+				detach(div);
+			}
+		}
+	};
+}
+
+let color = 'red';
+
+class Component extends SvelteComponent {
+	constructor(options) {
+		super();
+		init(this, options, null, create_fragment, safe_not_equal, []);
+	}
+}
+
+export default Component;

test/js/samples/inline-style-without-updates/input.svelte

@@ -0,0 +1,5 @@
+<script>
+	let color = 'red';
+</script>
+
+<div style="color: {color}"></div>