add test for $$props vars output

src/compile/Component.ts

@@ -152,7 +152,7 @@ export default class Component {
 		} else if (name === '$$props') {
 			this.add_var({
 				name,
-				implicit: true,
+				injected: true,
 				referenced: true
 			});
 		} else if (name[0] === '$') {
@@ -607,7 +607,7 @@ export default class Component {
 			} else if (name === '$$props') {
 				this.add_var({
 					name,
-					implicit: true
+					injected: true
 				});
 			} else if (name[0] === '$') {
 				this.add_var({

test/vars/samples/$$props-logicless/_config.js

@@ -0,0 +1,16 @@
+export default {
+	test(assert, vars) {
+		assert.deepEqual(vars, [
+			{
+				name: '$$props',
+				export_name: null,
+				injected: true,
+				module: false,
+				mutated: false,
+				reassigned: false,
+				referenced: true,
+				writable: false
+			}
+		]);
+	}
+};

test/vars/samples/$$props-logicless/input.svelte

@@ -0,0 +1 @@
+<h1>Hello {$$props.name}!</h1>

test/vars/samples/$$props/_config.js

@@ -0,0 +1,16 @@
+export default {
+	test(assert, vars) {
+		assert.deepEqual(vars, [
+			{
+				name: '$$props',
+				export_name: null,
+				injected: true,
+				module: false,
+				mutated: false,
+				reassigned: false,
+				referenced: true,
+				writable: false
+			}
+		]);
+	}
+};

test/vars/samples/$$props/input.svelte

@@ -0,0 +1,3 @@
+<script></script>
+
+<h1>Hello {$$props.name}!</h1>