use correct dependencies for each-block updates

src/generators/dom/visitors/EachBlock.js

@@ -188,7 +188,7 @@ function unkeyed ( generator, block, state, node, snippet, { create_each_block,
 	` );
 
 	const dependencies = block.findDependencies( node.expression );
-	const allDependencies = new Set( block.dependencies );
+	const allDependencies = new Set( node._block.dependencies );
 	dependencies.forEach( dependency => {
 		allDependencies.add( dependency );
 	});

test/js/samples/each-block-changed-check/expected.js

@@ -9,6 +9,12 @@ function create_main_fragment ( root, component ) {
 		each_block_iterations[i] = create_each_block( root, each_block_value, each_block_value[i], i, component );
 	}
 
+	var text = createText( "\n\n" );
+	var p = createElement( 'p' );
+	var text_1_value = root.foo;
+	var text_1 = createText( text_1_value );
+	appendNode( text_1, p );
+
 	return {
 		mount: function ( target, anchor ) {
 			insertNode( each_block_anchor, target, anchor );
@@ -16,6 +22,9 @@ function create_main_fragment ( root, component ) {
 			for ( var i = 0; i < each_block_iterations.length; i += 1 ) {
 				each_block_iterations[i].mount( target, each_block_anchor );
 			}
+
+			insertNode( text, target, anchor );
+			insertNode( p, target, anchor );
 		},
 
 		update: function ( changed, root ) {
@@ -35,6 +44,10 @@ function create_main_fragment ( root, component ) {
 
 				each_block_iterations.length = each_block_value.length;
 			}
+
+			if ( text_1_value !== ( text_1_value = root.foo ) ) {
+				text_1.data = text_1_value;
+			}
 		},
 
 		destroy: function ( detach ) {
@@ -42,6 +55,8 @@ function create_main_fragment ( root, component ) {
 
 			if ( detach ) {
 				detachNode( each_block_anchor );
+				detachNode( text );
+				detachNode( p );
 			}
 		}
 	};

test/js/samples/each-block-changed-check/input.html

@@ -7,3 +7,5 @@
 		{{{comment.html}}}
 	</div>
 {{/each}}
+
+<p>{{foo}}</p>