fix a few typescript issues

src/generators/nodes/AwaitBlock.ts

@@ -2,7 +2,6 @@ import deindent from '../../utils/deindent';
 import Node from './shared/Node';
 import { DomGenerator } from '../dom/index';
 import Block from '../dom/Block';
-import visitAwaitBlock from '../dom/visitors/AwaitBlock';
 import PendingBlock from './PendingBlock';
 import ThenBlock from './ThenBlock';
 import CatchBlock from './CatchBlock';
@@ -12,6 +11,7 @@ import createDebuggingComment from '../../utils/createDebuggingComment';
 export default class AwaitBlock extends Node {
 	value: string;
 	error: string;
+	expression: Node;
 
 	pending: PendingBlock;
 	then: ThenBlock;

src/generators/nodes/Binding.ts

@@ -3,6 +3,7 @@ import Element from './Element';
 import getObject from '../../utils/getObject';
 import getTailSnippet from '../../utils/getTailSnippet';
 import flattenReference from '../../utils/flattenReference';
+import { DomGenerator } from '../dom/index';
 import Block from '../dom/Block';
 import State from '../dom/State';
 

src/generators/nodes/CatchBlock.ts

@@ -5,4 +5,5 @@ import State from '../dom/State';
 export default class CatchBlock extends Node {
 	_block: Block;
 	_state: State;
+	children: Node[];
 }

src/generators/nodes/EachBlock.ts

@@ -4,7 +4,6 @@ import ElseBlock from './ElseBlock';
 import { DomGenerator } from '../dom/index';
 import Block from '../dom/Block';
 import State from '../dom/State';
-import visitEachBlock from '../dom/visitors/EachBlock';
 import createDebuggingComment from '../../utils/createDebuggingComment';
 
 export default class EachBlock extends Node {

src/generators/nodes/PendingBlock.ts

@@ -5,4 +5,5 @@ import State from '../dom/State';
 export default class PendingBlock extends Node {
 	_block: Block;
 	_state: State;
+	children: Node[];
 }

src/generators/nodes/ThenBlock.ts

@@ -5,4 +5,5 @@ import State from '../dom/State';
 export default class ThenBlock extends Node {
 	_block: Block;
 	_state: State;
+	children: Node[];
 }

src/generators/nodes/shared/Node.ts

@@ -7,9 +7,11 @@ export default class Node {
 	type: string;
 	start: number;
 	end: number;
+	[key: string]: any;
 
-	metadata: {
+	metadata?: {
 		dependencies: string[];
+		snippet: string;
 	};
 
 	parent: Node;