fix: destructing assignment of dynamic import json file

lib/dependencies/ImportDependency.js

@@ -48,12 +48,32 @@ class ImportDependency extends ModuleDependency {
 	 * @returns {(string[] | ReferencedExport)[]} referenced exports
 	 */
 	getReferencedExports(moduleGraph, runtime) {
-		return this.referencedExports
-			? this.referencedExports.map(e => ({
-					name: e,
-					canMangle: false
-			  }))
-			: Dependency.EXPORTS_OBJECT_REFERENCED;
+		if (!this.referencedExports) return Dependency.EXPORTS_OBJECT_REFERENCED;
+		const refs = [];
+		for (const referencedExport of this.referencedExports) {
+			if (referencedExport[0] === "default") {
+				const selfModule = moduleGraph.getParentModule(this);
+				const importedModule =
+					/** @type {Module} */
+					(moduleGraph.getModule(this));
+				const exportsType = importedModule.getExportsType(
+					moduleGraph,
+					/** @type {BuildMeta} */
+					(selfModule.buildMeta).strictHarmonyModule
+				);
+				if (
+					exportsType === "default-only" ||
+					exportsType === "default-with-named"
+				) {
+					return Dependency.EXPORTS_OBJECT_REFERENCED;
+				}
+			}
+			refs.push({
+				name: referencedExport,
+				canMangle: false
+			});
+		}
+		return refs;
 	}
 
 	/**

test/cases/chunks/destructuring-assignment/dir2/a.js

@@ -0,0 +1,2 @@
+exports.a = 1;
+exports.b = 2;

test/cases/chunks/destructuring-assignment/dir2/json/array.json

@@ -0,0 +1 @@
+["a"]

test/cases/chunks/destructuring-assignment/dir2/json/object.json

@@ -0,0 +1 @@
+{"a": 1}

test/cases/chunks/destructuring-assignment/dir2/json/primitive.json

@@ -0,0 +1 @@
+"a"

test/cases/chunks/destructuring-assignment/index.js

@@ -10,3 +10,14 @@ it("should get warning on using 'webpackExports' with destructuring assignment",
 	expect(def).toBe(3);
 	done();
 });
+
+it("should not tree-shake default export for exportsType=default module", async () => {
+	const { default: object } = await import("./dir2/json/object.json");
+	const { default: array } = await import("./dir2/json/array.json");
+	const { default: primitive } = await import("./dir2/json/primitive.json");
+	expect(object).toEqual({ a: 1 });
+	expect(array).toEqual(["a"]);
+	expect(primitive).toBe("a");
+	const { default: a } = await import("./dir2/a");
+	expect(a).toEqual({ a: 1, b: 2 });
+});

test/cases/chunks/inline-options/dir15/a.js

@@ -0,0 +1,2 @@
+exports.a = 1;
+exports.b = 2;

test/cases/chunks/inline-options/dir15/json/array.json

@@ -0,0 +1 @@
+["a"]

test/cases/chunks/inline-options/dir15/json/object.json

@@ -0,0 +1 @@
+{"a": 1}

test/cases/chunks/inline-options/dir15/json/primitive.json

@@ -0,0 +1 @@
+"a"

test/cases/chunks/inline-options/index.js

@@ -180,13 +180,29 @@ if (process.env.NODE_ENV === "production") {
 			}
 		);
 	});
+
 	it("should be able to load with webpackFetchPriorty high, low and auto", function () {
 		return Promise.all([
 			import(/* webpackFetchPriority: "high"*/ "./dir14/a"),
 			import(/* webpackFetchPriority: "low"*/ "./dir14/b"),
 			import(/* webpackFetchPriority: "auto"*/ "./dir14/c"),
 		])
 	})
+
+	it("should not tree-shake default export for exportsType=default module", async function () {
+		const jsonObject = await import(/* webpackExports: ["default"] */ "./dir15/json/object.json");
+		const jsonArray = await import(/* webpackExports: ["default"] */ "./dir15/json/array.json");
+		const jsonPrimitive = await import(/* webpackExports: ["default"] */ "./dir15/json/primitive.json");
+		expect(jsonObject.default).toEqual({ a: 1 });
+		expect(jsonObject.a).toEqual(1);
+		expect(jsonArray.default).toEqual(["a"]);
+		expect(jsonArray[0]).toBe("a");
+		expect(jsonPrimitive.default).toBe("a");
+		const a = await import(/* webpackExports: ["default"] */"./dir15/a");
+		expect(a.default).toEqual({ a: 1, b: 2 });
+		expect(a.a).toBe(1);
+		expect(a.b).toBe(2);
+	})
 }
 
 function testChunkLoading(load, expectedSyncInitial, expectedSyncRequested) {