Merge pull request #7419 from webpack/bugfix/wasm-multi-direct

fix a code generation bug and add test cases

lib/wasm/WasmMainTemplatePlugin.js

@@ -96,7 +96,7 @@ function generateImportObject(module) {
 		).join(", ");
 		const variables = Array.from(
 			waitForInstances.keys(),
-			(name, i) => `${name} = array[${i}];`
+			(name, i) => `${name} = array[${i}]`
 		).join(", ");
 		return Template.asString([
 			`${JSON.stringify(module.id)}: function() {`,

test/cases/wasm/imports-many-direct/index.js

@@ -0,0 +1,6 @@
+it("should allow to run a WebAssembly module with many direct wasm dependencies", function() {
+	return import("./wasm.wat").then(function(wasm) {
+		const result = wasm.testI64();
+		expect(result).toEqual(42);
+	});
+});

test/cases/wasm/imports-many-direct/other1.wat

@@ -0,0 +1,7 @@
+(module
+  (type $t0 (func (param i64) (result i64)))
+  (func $getI64 (type $t0) (param $p0 i64) (result i64)
+    get_local $p0
+    i64.const 20
+    i64.add)
+  (export "getI64" (func $getI64)))

test/cases/wasm/imports-many-direct/other2.wat

@@ -0,0 +1,7 @@
+(module
+  (type $t0 (func (param i64) (result i64)))
+  (func $getI64 (type $t0) (param $p0 i64) (result i64)
+    get_local $p0
+    i64.const 22
+    i64.add)
+  (export "getI64" (func $getI64)))

test/cases/wasm/imports-many-direct/test.filter.js

@@ -0,0 +1,5 @@
+var supportsWebAssembly = require("../../../helpers/supportsWebAssembly");
+
+module.exports = function(config) {
+	return supportsWebAssembly();
+};

test/cases/wasm/imports-many-direct/wasm.wat

@@ -0,0 +1,13 @@
+(module
+  (type $t0 (func (param i64) (result i64)))
+  (type $t1 (func (result i32)))
+  (import "./other1.wat" "getI64" (func $getI641 (type $t0)))
+  (import "./other2.wat" "getI64" (func $getI642 (type $t0)))
+  (func $testI64 (type $t1) (result i32)
+    i64.const 1152921504606846976
+    call $getI641
+    call $getI642
+    i64.const 1152921504606846976
+    i64.sub
+    i32.wrap/i64)
+  (export "testI64" (func $testI64)))

test/cases/wasm/unused-export/index.js

@@ -0,0 +1,6 @@
+it("should allow wasm with unused exports", function() {
+	return import("./module").then(function(module) {
+		const result = module.run();
+		expect(result).toEqual(42);
+	});
+});

test/cases/wasm/unused-export/module.js

@@ -0,0 +1,5 @@
+import { getNumber } from "./wasm.wat";
+
+export function run() {
+	return getNumber();
+}

test/cases/wasm/unused-export/test.filter.js

@@ -0,0 +1,5 @@
+var supportsWebAssembly = require("../../../helpers/supportsWebAssembly");
+
+module.exports = function(config) {
+	return supportsWebAssembly();
+};

test/cases/wasm/unused-export/wasm.wat

@@ -0,0 +1,10 @@
+(module
+  (type $t0 (func (param i32 i32) (result i32)))
+  (type $t1 (func (result i32)))
+  (func $add (export "add") (type $t0) (param $p0 i32) (param $p1 i32) (result i32)
+    (i32.add
+      (get_local $p0)
+      (get_local $p1)))
+  (func $getNumber (export "getNumber") (type $t1) (result i32)
+    (i32.const 42)))
+