maintain this context when sequence is callable

src/ast/nodes/SequenceExpression.js

@@ -34,6 +34,10 @@ export default class SequenceExpression extends Node {
 			const last = this.expressions[ this.expressions.length - 1 ];
 			last.render( code, es );
 
+			if ( this.parent.type === 'CallExpression' && last.type === 'MemberExpression' && this.expressions.length > 1 ) {
+				this.expressions[0].included = true
+			}
+
 			const included = this.expressions.slice( 0, this.expressions.length - 1 ).filter( expression => expression.included );
 			if ( included.length === 0 ) {
 				code.remove( this.start, last.start );

test/form/samples/sequence-expression/_expected/amd.js

@@ -20,4 +20,7 @@ define(function () { 'use strict';
     // should properly render complex sub-expressions
     var g = ((() => {console.log(foo$1());})(), 1);
 
+    // should maintain this context
+    var h = (0, foo$1)();
+
 });

test/form/samples/sequence-expression/_expected/cjs.js

@@ -19,3 +19,6 @@ var e = (foo$1());
 
 // should properly render complex sub-expressions
 var g = ((() => {console.log(foo$1());})(), 1);
+
+// should maintain this context
+var h = (0, foo$1)();

test/form/samples/sequence-expression/_expected/es.js

@@ -17,3 +17,6 @@ var e = (foo$1());
 
 // should properly render complex sub-expressions
 var g = ((() => {console.log(foo$1());})(), 1);
+
+// should maintain this context
+var h = (0, foo$1)();

test/form/samples/sequence-expression/_expected/iife.js

@@ -21,4 +21,7 @@
     // should properly render complex sub-expressions
     var g = ((() => {console.log(foo$1());})(), 1);
 
+    // should maintain this context
+    var h = (0, foo$1)();
+
 }());

test/form/samples/sequence-expression/_expected/umd.js

@@ -24,4 +24,7 @@
     // should properly render complex sub-expressions
     var g = ((() => {console.log(foo$1());})(), 1);
 
+    // should maintain this context
+    var h = (0, foo$1)();
+
 })));

test/form/samples/sequence-expression/main.js

@@ -21,3 +21,6 @@ var e = (0, f.foo());
 
 // should properly render complex sub-expressions
 var g = ((() => {})(), (() => {console.log(f.foo())})(), 1);
+
+// should maintain this context
+var h = (0, f.foo)();