From 782c09d783e006a697b4ba6d1e7ec2f718ce8393 Mon Sep 17 00:00:00 2001
From: TypeScript Bot <ts_bot@rcavanaugh.com>
Date: Mon, 30 Aug 2021 14:18:11 -0700
Subject: [PATCH] Cherry-pick PR #45484 into release-4.4 (#45564)

Component commits:
33829fa4a4 Fix and updated tests

2249d6c83e Added test

e1a2b9ed19 Revert "Fix and updated tests"
This reverts commit 33829fa4a4a4cc0b54d3793ced9a31fa42930e3a.

51881c4ea2 Filter out empty access expression

2253da6ae9 PR feedback

Co-authored-by: Armando Aguirre <armanio123@outlook.com>
---
 src/services/completions.ts                         | 11 +++++++----
 tests/cases/fourslash/getJavaScriptCompletions22.ts | 12 ++++++++++++
 2 files changed, 19 insertions(+), 4 deletions(-)
 create mode 100644 tests/cases/fourslash/getJavaScriptCompletions22.ts

diff --git a/src/services/completions.ts b/src/services/completions.ts
index 285095e727a0c..ef16b782c2971 100644
--- a/src/services/completions.ts
+++ b/src/services/completions.ts
@@ -1338,13 +1338,16 @@ namespace ts.Completions {
                     case SyntaxKind.PropertyAccessExpression:
                         propertyAccessToConvert = parent as PropertyAccessExpression;
                         node = propertyAccessToConvert.expression;
-                        if ((isCallExpression(node) || isFunctionLike(node)) &&
-                            node.end === contextToken.pos &&
-                            node.getChildCount(sourceFile) &&
-                            last(node.getChildren(sourceFile)).kind !== SyntaxKind.CloseParenToken) {
+                        const leftmostAccessExpression = getLeftmostAccessExpression(propertyAccessToConvert);
+                        if (nodeIsMissing(leftmostAccessExpression) ||
+                            ((isCallExpression(node) || isFunctionLike(node)) &&
+                                node.end === contextToken.pos &&
+                                node.getChildCount(sourceFile) &&
+                                last(node.getChildren(sourceFile)).kind !== SyntaxKind.CloseParenToken)) {
                             // This is likely dot from incorrectly parsed expression and user is starting to write spread
                             // eg: Math.min(./**/)
                             // const x = function (./**/) {}
+                            // ({./**/})
                             return undefined;
                         }
                         break;
diff --git a/tests/cases/fourslash/getJavaScriptCompletions22.ts b/tests/cases/fourslash/getJavaScriptCompletions22.ts
new file mode 100644
index 0000000000000..86f82a346eeb5
--- /dev/null
+++ b/tests/cases/fourslash/getJavaScriptCompletions22.ts
@@ -0,0 +1,12 @@
+/// <reference path="fourslash.ts" />
+
+// Regresion test for GH#45436
+
+// @allowNonTsExtensions: true
+// @Filename: file.js
+//// const abc = {};
+//// ({./*1*/});
+
+goTo.marker('1');
+edit.insert('.');
+verify.completions({ exact: undefined });