From be708bbb0a0e4350636e4ecc3b84d16fe26f5f86 Mon Sep 17 00:00:00 2001
From: kingwl <kingwenlu@gmail.com>
Date: Fri, 10 Apr 2020 14:19:59 +0800
Subject: [PATCH] fix assignment check of logical assignment

---
 src/compiler/checker.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index c08d2a2348..80f535d180 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -19772,6 +19772,9 @@ namespace ts {
                 case SyntaxKind.BinaryExpression:
                     switch ((<BinaryExpression>node).operatorToken.kind) {
                         case SyntaxKind.EqualsToken:
+                        case SyntaxKind.BarBarEqualsToken:
+                        case SyntaxKind.AmpersandAmpersandEqualsToken:
+                        case SyntaxKind.QuestionQuestionEqualsToken:
                             return getReferenceCandidate((<BinaryExpression>node).left);
                         case SyntaxKind.CommaToken:
                             return getReferenceCandidate((<BinaryExpression>node).right);
@@ -28590,7 +28593,7 @@ namespace ts {
                         getUnionType([extractDefinitelyFalsyTypes(strictNullChecks ? leftType : getBaseTypeOfLiteralType(rightType)), rightType]) :
                         leftType;
                     if (operator === SyntaxKind.AmpersandAmpersandEqualsToken) {
-                        checkAssignmentOperator(resultType);
+                        checkAssignmentOperator(rightType);
                     }
                     return resultType;
                 }