Merge 41aef1169f into 0a2fed82c9

src/generators/dom/visitors/EachBlock.ts

@@ -42,7 +42,9 @@ export default function visitEachBlock(
 
 	const { snippet } = block.contextualise(node.expression);
 
+	
 	block.builders.init.addLine(`var ${each_block_value} = ${snippet};`);
+	block.builders.init.addLine(`if(!${each_block_value}) throw new Error('Missing field or value is null ${node.expression}');`
 
 	if (node.key) {
 		keyed(generator, block, state, node, snippet, vars);

test/runtime/samples/each-block-missing-value/_config.js

@@ -0,0 +1,19 @@
+export default {
+	data: {
+		noanimals: [ 'alpaca', 'baboon', 'capybara' ]
+	},
+
+	html: `
+		<p>alpaca</p>
+		<p>baboon</p>
+		<p>capybara</p>
+	`,
+
+	test ( assert, component, target ) {
+		component.set({ noanimals: [ 'alpaca', 'baboon', 'caribou', 'dogfish' ] });
+		assert.htmlEqual( target.innerHTML, `` );
+
+		component.set({ animals: [] });
+		assert.htmlEqual( target.innerHTML, '' );
+	}
+};

test/runtime/samples/each-block-missing-value/main.html

@@ -0,0 +1,3 @@
+{{#each animals as animal}}
+	<p>{{animal}}</p>
+{{/each}}