add more test for rest and default

src/compiler/compile/nodes/AwaitBlock.ts

@@ -56,7 +56,11 @@ function get_context_from_expression(node: Pattern, result: string[]): string[]
 			return result;
 		case 'ObjectPattern':
 			for (const property of node.properties) {
+				if (property.type === 'Property') {
 					get_context_from_expression(property.value, result);
+				} else {
+					get_context_from_expression(property, result);
+				}
 			}
 			return result;
 		case 'MemberExpression':

src/compiler/compile/render_dom/wrappers/AwaitBlock.ts

@@ -275,12 +275,17 @@ export default class AwaitBlockWrapper extends Wrapper {
 function replace_context(block: Block, pattern: Pattern) {
 	if (pattern.type === 'ObjectPattern') {
 		for (const property of pattern.properties) {
+			if (property.type === 'Property') {
 				if (property.value.type === 'Identifier') {
 					// @ts-ignore
 					property.value = x`#ctx[${block.renderer.context_lookup.get(property.value.name).index}]`;
 				} else {
 					replace_context(block, property.value);
 				}
+			} else {
+				// @ts-ignore
+				replace_context(block, property);
+			}
 		}
 	} else if (pattern.type === 'ArrayPattern') {
 		for (let i=0; i<pattern.elements.length; i++) {

src/compiler/parse/state/mustache.ts

@@ -305,7 +305,7 @@ export default function mustache(parser: Parser) {
 		const await_block_shorthand = type === 'AwaitBlock' && parser.eat('then');
 		if (await_block_shorthand) {
 			parser.require_whitespace();
-			block.value = parser.read_identifier();
+			block.value = parser.read_destructure_pattern();
 			parser.allow_whitespace();
 		}
 

test/runtime/samples/await-then-destruct-array/_config.js

@@ -1,6 +1,6 @@
 export default {
 	props: {
-		thePromise: new Promise(resolve => {}),
+		thePromise: new Promise(resolve => {})
 	},
 
 	html: `
@@ -8,22 +8,54 @@ export default {
 	`,
 
 	async test({ assert, component, target }) {
-		let promise = Promise.resolve([1, 2]);
-		component.thePromise = promise;
+		await (component.thePromise = Promise.resolve([1, 2]));
 
-		await promise;
-		assert.htmlEqual(target.innerHTML, `
+		assert.htmlEqual(
+			target.innerHTML,
+			`
 				<p>a: 1</p>
 				<p>b: 2</p>
-		`);
+			`
+		);
 
-		promise = Promise.resolve([4, 5]);
-		component.thePromise = promise;
+		await (component.thePromise = Promise.resolve([4, 5]));
 
-		await promise;
-		assert.htmlEqual(target.innerHTML, `
+		assert.htmlEqual(
+			target.innerHTML,
+			`
 				<p>a: 4</p>
 				<p>b: 5</p>
-		`);	
+			`
+		);
+
+		try {
+			await (component.thePromise = Promise.reject(['a', [6, 7]]));
+		} catch {
+			// do nothing
+		}
+
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<p>c: a</p>
+				<p>d: 6</p>
+				<p>e: 7</p>
+			`
+		);
+
+		try {
+			await (component.thePromise = Promise.reject(['b', [8, 9]]));
+		} catch {
+			// do nothing
+		}
+
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<p>c: b</p>
+				<p>d: 8</p>
+				<p>e: 9</p>
+			`
+		);
 	}
 };

test/runtime/samples/await-then-destruct-array/main.svelte

@@ -7,4 +7,8 @@
 {:then [ a, b ]}
 	<p>a: {a}</p>
 	<p>b: {b}</p>
+{:catch [c, [d, e]]}
+	<p>c: {c}</p>
+	<p>d: {d}</p>
+	<p>e: {e}</p>
 {/await}

test/runtime/samples/await-then-destruct-default/_config.js

@@ -0,0 +1,23 @@
+export default {
+	async test({ assert, component, target }) {
+		await Promise.resolve();
+
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+			<p>a: 3</p>
+			<p>b: 2</p>
+			<p>c: 3</p>
+			<p>a: 1</p>
+			<p>b: 2</p>
+			<p>c: 3</p>
+			<p>a: 3</p>
+			<p>b: 2</p>
+			<p>c: 3</p>
+			<p>a: 1</p>
+			<p>b: 2</p>
+			<p>c: 3</p>
+			`
+		);
+	}
+};

test/runtime/samples/await-then-destruct-default/main.svelte

@@ -0,0 +1,34 @@
+<script>
+	let object = Promise.resolve({ b: 2, c: 3 });
+	let array = Promise.resolve([1, 2]);
+	let objectReject = Promise.reject({ b: 2, c: 3 });
+	let arrayReject = Promise.reject([1, 2]);
+</script>
+
+{#await object then { a = 3, b = 4, c }}
+	<p>a: {a}</p>
+	<p>b: {b}</p>
+	<p>c: {c}</p>
+{/await}
+
+{#await array then [a, b, c = 3]}
+	<p>a: {a}</p>
+	<p>b: {b}</p>
+	<p>c: {c}</p>
+{/await}
+
+{#await objectReject then value}
+	resolved
+{:catch { a = 3, b = 4, c }}
+	<p>a: {a}</p>
+	<p>b: {b}</p>
+	<p>c: {c}</p>
+{/await}
+
+{#await arrayReject then value}
+	resolved
+{:catch [a, b, c = 3]}
+	<p>a: {a}</p>
+	<p>b: {b}</p>
+	<p>c: {c}</p>
+{/await}

test/runtime/samples/await-then-destruct-object/_config.js

@@ -1,6 +1,6 @@
 export default {
 	props: {
-		thePromise: new Promise(resolve => {}),
+		thePromise: new Promise(resolve => {})
 	},
 
 	html: `
@@ -8,20 +8,56 @@ export default {
 	`,
 
 	async test({ assert, component, target }) {
-		let promise = Promise.resolve({ error: 'error message' });
-		component.thePromise = promise;
+		await (component.thePromise = Promise.resolve({ error: "error message" }));
 
-		await promise;
-		assert.htmlEqual(target.innerHTML, `
+		assert.htmlEqual(
+			target.innerHTML,
+			`
 				<p>error: error message</p>
-		`);
+				<p>result: undefined</p>
+			`
+		);
 
-		promise = Promise.resolve({ result: '42' });
-		component.thePromise = promise;
+		await (component.thePromise = Promise.resolve({ result: "42" }));
 
-		await promise;
-		assert.htmlEqual(target.innerHTML, `
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<p>error: undefined</p>
 				<p>result: 42</p>
-		`);	
+			`
+		);
+
+		try {
+			await (component.thePromise = Promise.reject({
+				error: { message: "oops", code: "123" }
+			}));
+		} catch {
+			// do nothing
+		}
+
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<p>message: oops</p>
+				<p>code: 123</p>
+			`
+		);
+
+		try {
+			await (component.thePromise = Promise.reject({
+				error: { message: "timeout", code: "456" }
+			}));
+		} catch {
+			// do nothing
+		}
+
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<p>message: timeout</p>
+				<p>code: 456</p>
+			`
+		);
 	}
 };

test/runtime/samples/await-then-destruct-object/main.svelte

@@ -5,9 +5,9 @@
 {#await thePromise}
 	loading...
 {:then { result, error }}
-	{#if error}
 	<p>error: {error}</p>
-	{:else}
 	<p>result: {result}</p>
-	{/if}
+{:catch { error: { message, code } }}
+	<p>message: {message}</p>
+	<p>code: {code}</p>
 {/await}

test/runtime/samples/await-then-destruct-rest/_config.js

@@ -0,0 +1,21 @@
+export default {
+	async test({ assert, component, target }) {
+		await Promise.resolve();
+
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+			<p>a: 1</p>
+			<p>rest: {"b":2,"c":3}</p>
+			<p>a: 1</p>
+			<p>b: 2</p>
+			<p>rest: [3,4,5,6]</p>
+			<p>a: 1</p>
+			<p>rest: {"b":2,"c":3}</p>
+			<p>a: 1</p>
+			<p>b: 2</p>
+			<p>rest: [3,4,5,6]</p>
+			`
+		);
+	}
+};

test/runtime/samples/await-then-destruct-rest/main.svelte

@@ -0,0 +1,32 @@
+<script>
+	let object = Promise.resolve({ a: 1, b: 2, c: 3 });
+	let array = Promise.resolve([1, 2, 3, 4, 5, 6]);
+	let objectReject = Promise.reject({ a: 1, b: 2, c: 3 });
+	let arrayReject = Promise.reject([1, 2, 3, 4, 5, 6]);
+</script>
+
+{#await object then { a, ...rest }}
+	<p>a: {a}</p>
+	<p>rest: {JSON.stringify(rest)}</p>
+{/await}
+
+{#await array then [a, b, ...rest]}
+	<p>a: {a}</p>
+	<p>b: {b}</p>
+	<p>rest: {JSON.stringify(rest)}</p>
+{/await}
+
+{#await objectReject then value}
+	resolved
+{:catch { a, ...rest }}
+	<p>a: {a}</p>
+	<p>rest: {JSON.stringify(rest)}</p>
+{/await}
+
+{#await arrayReject then value}
+	resolved
+{:catch [a, b, ...rest]}
+	<p>a: {a}</p>
+	<p>b: {b}</p>
+	<p>rest: {JSON.stringify(rest)}</p>
+{/await}