fix store bindings

src/generators/nodes/Component.ts

@@ -137,16 +137,14 @@ export default class Component extends Node {
 				block.addVariable(name_updating, '{}');
 				statements.push(`var ${name_initial_data} = ${initialPropString};`);
 
-				const setParentFromChildOnChange = new CodeBuilder();
-				const setStoreFromChildOnChange = new CodeBuilder();
+				let hasLocalBindings = false;
+				let hasStoreBindings = false;
+
+				const builder = new CodeBuilder();
 
 				bindings.forEach((binding: Binding) => {
 					let { name: key } = getObject(binding.value);
 
-					const isStoreProp = generator.options.store && key[0] === '$';
-					if (isStoreProp) key = key.slice(1);
-					const newState = isStoreProp ? 'newStoreState' : 'newState';
-
 					binding.contexts.forEach(context => {
 						allContexts.add(context);
 					});
@@ -163,21 +161,37 @@ export default class Component extends Node {
 							list[index]${tail} = childState.${binding.name};
 
 							${binding.dependencies
-								.map((prop: string) => `${newState}.${prop} = state.${prop};`)
+								.map((name: string) => {
+									const isStoreProp = generator.options.store && name[0] === '$';
+									const prop = isStoreProp ? name.slice(1) : name;
+									const newState = isStoreProp ? 'newStoreState' : 'newState';
+
+									if (isStoreProp) hasStoreBindings = true;
+									else hasLocalBindings = true;
+
+									return `${newState}.${prop} = state.${name};`;
+								})
 								.join('\n')}
 						`;
 					}
 
 					else {
+						const isStoreProp = generator.options.store && key[0] === '$';
+						const prop = isStoreProp ? key.slice(1) : key;
+						const newState = isStoreProp ? 'newStoreState' : 'newState';
+
+						if (isStoreProp) hasStoreBindings = true;
+						else hasLocalBindings = true;
+
 						if (binding.value.type === 'MemberExpression') {
 							setFromChild = deindent`
 								${binding.snippet} = childState.${binding.name};
-								${newState}.${key} = state.${key};
+								${newState}.${prop} = state.${key};
 							`;
 						}
 
 						else {
-							setFromChild = `${newState}.${key} = childState.${binding.name};`;
+							setFromChild = `${newState}.${prop} = childState.${binding.name};`;
 						}
 					}
 
@@ -188,7 +202,7 @@ export default class Component extends Node {
 						}`
 					);
 
-					(isStoreProp ? setStoreFromChildOnChange : setParentFromChildOnChange).addConditional(
+					builder.addConditional(
 						`!${name_updating}.${binding.name} && changed.${binding.name}`,
 						setFromChild
 					);
@@ -208,21 +222,16 @@ export default class Component extends Node {
 
 				const initialisers = [
 					'state = #component.get()',
-					!setParentFromChildOnChange.isEmpty() && 'newState = {}',
-					!setStoreFromChildOnChange.isEmpty() && 'newStoreState = {}',
+					hasLocalBindings && 'newState = {}',
+					hasStoreBindings && 'newStoreState = {}',
 				].filter(Boolean).join(', ');
 
 				componentInitProperties.push(deindent`
 					_bind: function(changed, childState) {
 						var ${initialisers};
-						${!setStoreFromChildOnChange.isEmpty() && deindent`
-							${setStoreFromChildOnChange}
-							#component.store.set(newStoreState);
-						`}
-						${!setParentFromChildOnChange.isEmpty() && deindent`
-							${setParentFromChildOnChange}
-							#component._set(newState);
-						`}
+						${builder}
+						${hasStoreBindings && `#component.store.set(newStoreState);`}
+						${hasLocalBindings && `#component._set(newState);`}
 						${name_updating} = {};
 					}
 				`);