unused values should be null to support super classes

lib/dependencies/PureExpressionDependency.js

@@ -82,8 +82,6 @@ PureExpressionDependency.Template = class PureExpressionDependencyTemplate exten
 	) {
 		const dep = /** @type {PureExpressionDependency} */ (dependency);
 
-		let condition = "null";
-
 		const usedByExports = dep.usedByExports;
 		if (usedByExports !== false) {
 			const selfModule = moduleGraph.getParentModule(dep);
@@ -98,18 +96,24 @@ PureExpressionDependency.Template = class PureExpressionDependencyTemplate exten
 			});
 			if (runtimeCondition === true) return;
 			if (runtimeCondition !== false) {
-				condition = runtimeTemplate.runtimeConditionExpression({
+				const condition = runtimeTemplate.runtimeConditionExpression({
 					chunkGraph,
 					runtime,
 					runtimeCondition,
 					runtimeRequirements
 				});
+				source.insert(
+					dep.range[0],
+					`(/* runtime-dependent pure expression or super */ ${condition} ? (`
+				);
+				source.insert(dep.range[1], ") : null)");
+				return;
 			}
 		}
 
 		source.insert(
 			dep.range[0],
-			`(/* unused pure expression or super */ ${condition} && (`
+			`(/* unused pure expression or super */ null && (`
 		);
 		source.insert(dep.range[1], "))");
 	}

test/configCases/graph/issue-11770/b.js

@@ -1,6 +1,8 @@
-import { other, val2c } from "./shared";
+import { other, val2c, Test } from "./shared";
 
 it("should have the correct value", () => {
 	expect(other).toBe("other");
 	expect(val2c).toBe(42);
+	expect(Test).toBeTypeOf("function");
+	expect(new Test()).toBeInstanceOf(Test);
 });

test/configCases/graph/issue-11770/shared.js

@@ -1,5 +1,6 @@
 import value from "./dep";
 import value2 from "./dep2";
+import Super from "./super";
 
 const derived = value;
 
@@ -10,3 +11,5 @@ export const val2b = value2;
 export const val2c = value2;
 
 export const other = "other";
+
+export class Test extends Super {}

test/configCases/graph/issue-11770/super.js

@@ -0,0 +1 @@
+export default class Super {}