Improve coverage

src/ast/nodes/Property.ts

@@ -10,7 +10,7 @@ import {
 	PathTracker,
 	UnknownKey
 } from '../utils/PathTracker';
-import { LiteralValueOrUnknown, UNKNOWN_EXPRESSION, UnknownValue } from '../values';
+import { LiteralValueOrUnknown, UNKNOWN_EXPRESSION } from '../values';
 import * as NodeType from './NodeType';
 import { ExpressionEntity } from './shared/Expression';
 import { ExpressionNode, NodeBase } from './shared/Node';
@@ -63,9 +63,6 @@ export default class Property extends NodeBase implements DeoptimizableEntity {
 		recursionTracker: PathTracker,
 		origin: DeoptimizableEntity
 	): LiteralValueOrUnknown {
-		if (this.kind === 'set') {
-			return UnknownValue;
-		}
 		if (this.kind === 'get') {
 			if (this.returnExpression === null) this.updateReturnExpression();
 			return (this.returnExpression as ExpressionEntity).getLiteralValueAtPath(

src/ast/nodes/shared/MultiExpression.ts

@@ -1,11 +1,9 @@
 import { CallOptions } from '../../CallOptions';
 import { DeoptimizableEntity } from '../../DeoptimizableEntity';
-import { HasEffectsContext, InclusionContext } from '../../ExecutionContext';
+import { HasEffectsContext } from '../../ExecutionContext';
 import { ObjectPath, PathTracker } from '../../utils/PathTracker';
 import { LiteralValueOrUnknown, UnknownValue } from '../../values';
-import SpreadElement from '../SpreadElement';
 import { ExpressionEntity } from './Expression';
-import { ExpressionNode } from './Node';
 
 export class MultiExpression implements ExpressionEntity {
 	included = false;
@@ -65,9 +63,5 @@ export class MultiExpression implements ExpressionEntity {
 
 	include(): void {}
 
-	includeCallArguments(context: InclusionContext, args: (ExpressionNode | SpreadElement)[]): void {
-		for (const expression of this.expressions) {
-			expression.includeCallArguments(context, args);
-		}
-	}
+	includeCallArguments(): void {}
 }

test/form/samples/multi-expression-calls/_config.js

@@ -0,0 +1,3 @@
+module.exports = {
+	description: 'handles side-effect-free multi-expressions'
+};

test/form/samples/multi-expression-calls/_expected.js

@@ -0,0 +1 @@
+console.log('retained');

test/form/samples/multi-expression-calls/main.js

@@ -0,0 +1,10 @@
+function noEffect1(x, y) {
+	return () => x;
+}
+
+function noEffect2() {
+	return () => {};
+}
+
+(globalThis.unknown ? noEffect1 : noEffect2)()();
+console.log('retained');