From 30c41492d93c2fff0752f0f256464db2d89d652c Mon Sep 17 00:00:00 2001
From: Andy <anhans@microsoft.com>
Date: Mon, 23 Jul 2018 17:11:30 -0700
Subject: [PATCH] moduleSpecifiers: Allow "*" as a path mapping (#25881)

---
 src/compiler/moduleSpecifiers.ts              |  5 +---
 .../importNameCodeFix_fromPathMapping.ts      | 24 +++++++++++++++++++
 2 files changed, 25 insertions(+), 4 deletions(-)
 create mode 100644 tests/cases/fourslash/importNameCodeFix_fromPathMapping.ts

diff --git a/src/compiler/moduleSpecifiers.ts b/src/compiler/moduleSpecifiers.ts
index 11559815412..9b64b5d330e 100644
--- a/src/compiler/moduleSpecifiers.ts
+++ b/src/compiler/moduleSpecifiers.ts
@@ -218,10 +218,7 @@ namespace ts.moduleSpecifiers {
             for (const patternText of paths[key]) {
                 const pattern = removeFileExtension(normalizePath(patternText));
                 const indexOfStar = pattern.indexOf("*");
-                if (indexOfStar === 0 && pattern.length === 1) {
-                    continue;
-                }
-                else if (indexOfStar !== -1) {
+                if (indexOfStar !== -1) {
                     const prefix = pattern.substr(0, indexOfStar);
                     const suffix = pattern.substr(indexOfStar + 1);
                     if (relativeToBaseUrl.length >= prefix.length + suffix.length &&
diff --git a/tests/cases/fourslash/importNameCodeFix_fromPathMapping.ts b/tests/cases/fourslash/importNameCodeFix_fromPathMapping.ts
new file mode 100644
index 00000000000..dda8b855123
--- /dev/null
+++ b/tests/cases/fourslash/importNameCodeFix_fromPathMapping.ts
@@ -0,0 +1,24 @@
+/// <reference path="fourslash.ts" />
+
+// @Filename: /a.ts
+////export const foo = 0;
+
+// @Filename: /b.ts
+////foo;
+
+// @Filename: /tsconfig.json
+////{
+////    "compilerOptions": {
+////        "baseUrl": ".",
+////        "paths": {
+////            "@root/*": ["*"],
+////        }
+////    }
+////}
+
+goTo.file("/b.ts");
+verify.importFixAtPosition([
+`import { foo } from "@root/a";
+
+foo;`,
+]);