diff --git a/tests/baselines/reference/ambientDeclarationsPatterns.errors.txt b/tests/baselines/reference/ambientDeclarationsPatterns.errors.txt
deleted file mode 100644
index 8fc7e4a3d18..00000000000
--- a/tests/baselines/reference/ambientDeclarationsPatterns.errors.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-tests/cases/conformance/ambient/declarations.d.ts(10,16): error TS5061: Pattern 'too*many*asterisks' can have at most one '*' character
-
-
-==== tests/cases/conformance/ambient/user.ts (0 errors) ====
-    ///<reference path="declarations.d.ts" />
-    import {foo, baz} from "foobarbaz";
-    foo(baz);
-    
-    import {foos} from "foosball";
-    
-==== tests/cases/conformance/ambient/declarations.d.ts (1 errors) ====
-    declare module "foo*baz" {
-        export function foo(n: number): void;
-    }
-    // Augmentations still work
-    declare module "foo*baz" {
-        export const baz: number;
-    }
-    
-    // Should be an error
-    declare module "too*many*asterisks" { }
-                   ~~~~~~~~~~~~~~~~~~~~
-!!! error TS5061: Pattern 'too*many*asterisks' can have at most one '*' character
-    
-    // Longest prefix wins
-    declare module "foos*" {
-        export const foos: number;
-    }
-    
\ No newline at end of file
diff --git a/tests/baselines/reference/ambientDeclarationsPatterns.js b/tests/baselines/reference/ambientDeclarationsPatterns.js
index ee9833a3a37..143f26550e9 100644
--- a/tests/baselines/reference/ambientDeclarationsPatterns.js
+++ b/tests/baselines/reference/ambientDeclarationsPatterns.js
@@ -2,19 +2,21 @@
 
 //// [declarations.d.ts]
 declare module "foo*baz" {
-    export function foo(n: number): void;
+    export function foo(s: string): void;
 }
 // Augmentations still work
 declare module "foo*baz" {
-    export const baz: number;
+    export const baz: string;
 }
 
-// Should be an error
-declare module "too*many*asterisks" { }
-
 // Longest prefix wins
 declare module "foos*" {
-    export const foos: number;
+    export const foos: string;
+}
+
+declare module "*!text" {
+    const x: string;
+    export default x;
 }
 
 //// [user.ts]
@@ -23,6 +25,11 @@ import {foo, baz} from "foobarbaz";
 foo(baz);
 
 import {foos} from "foosball";
+foo(foos);
+
+// Works with relative file name
+import fileText from "./file!text";
+foo(fileText);
 
 
 //// [user.js]
@@ -30,3 +37,8 @@ import {foos} from "foosball";
 ///<reference path="declarations.d.ts" />
 var foobarbaz_1 = require("foobarbaz");
 foobarbaz_1.foo(foobarbaz_1.baz);
+var foosball_1 = require("foosball");
+foobarbaz_1.foo(foosball_1.foos);
+// Works with relative file name
+var file_text_1 = require("./file!text");
+foobarbaz_1.foo(file_text_1["default"]);
diff --git a/tests/baselines/reference/ambientDeclarationsPatterns.symbols b/tests/baselines/reference/ambientDeclarationsPatterns.symbols
new file mode 100644
index 00000000000..4c0acc93f8f
--- /dev/null
+++ b/tests/baselines/reference/ambientDeclarationsPatterns.symbols
@@ -0,0 +1,51 @@
+=== tests/cases/conformance/ambient/user.ts ===
+///<reference path="declarations.d.ts" />
+import {foo, baz} from "foobarbaz";
+>foo : Symbol(foo, Decl(user.ts, 1, 8))
+>baz : Symbol(baz, Decl(user.ts, 1, 12))
+
+foo(baz);
+>foo : Symbol(foo, Decl(user.ts, 1, 8))
+>baz : Symbol(baz, Decl(user.ts, 1, 12))
+
+import {foos} from "foosball";
+>foos : Symbol(foos, Decl(user.ts, 4, 8))
+
+foo(foos);
+>foo : Symbol(foo, Decl(user.ts, 1, 8))
+>foos : Symbol(foos, Decl(user.ts, 4, 8))
+
+// Works with relative file name
+import fileText from "./file!text";
+>fileText : Symbol(fileText, Decl(user.ts, 8, 6))
+
+foo(fileText);
+>foo : Symbol(foo, Decl(user.ts, 1, 8))
+>fileText : Symbol(fileText, Decl(user.ts, 8, 6))
+
+=== tests/cases/conformance/ambient/declarations.d.ts ===
+declare module "foo*baz" {
+    export function foo(s: string): void;
+>foo : Symbol(foo, Decl(declarations.d.ts, 0, 26))
+>s : Symbol(s, Decl(declarations.d.ts, 1, 24))
+}
+// Augmentations still work
+declare module "foo*baz" {
+    export const baz: string;
+>baz : Symbol(baz, Decl(declarations.d.ts, 5, 16))
+}
+
+// Longest prefix wins
+declare module "foos*" {
+    export const foos: string;
+>foos : Symbol(foos, Decl(declarations.d.ts, 10, 16))
+}
+
+declare module "*!text" {
+    const x: string;
+>x : Symbol(x, Decl(declarations.d.ts, 14, 9))
+
+    export default x;
+>x : Symbol(x, Decl(declarations.d.ts, 14, 9))
+}
+
diff --git a/tests/baselines/reference/ambientDeclarationsPatterns.types b/tests/baselines/reference/ambientDeclarationsPatterns.types
new file mode 100644
index 00000000000..adf8ae1ab3b
--- /dev/null
+++ b/tests/baselines/reference/ambientDeclarationsPatterns.types
@@ -0,0 +1,54 @@
+=== tests/cases/conformance/ambient/user.ts ===
+///<reference path="declarations.d.ts" />
+import {foo, baz} from "foobarbaz";
+>foo : (s: string) => void
+>baz : string
+
+foo(baz);
+>foo(baz) : void
+>foo : (s: string) => void
+>baz : string
+
+import {foos} from "foosball";
+>foos : string
+
+foo(foos);
+>foo(foos) : void
+>foo : (s: string) => void
+>foos : string
+
+// Works with relative file name
+import fileText from "./file!text";
+>fileText : string
+
+foo(fileText);
+>foo(fileText) : void
+>foo : (s: string) => void
+>fileText : string
+
+=== tests/cases/conformance/ambient/declarations.d.ts ===
+declare module "foo*baz" {
+    export function foo(s: string): void;
+>foo : (s: string) => void
+>s : string
+}
+// Augmentations still work
+declare module "foo*baz" {
+    export const baz: string;
+>baz : string
+}
+
+// Longest prefix wins
+declare module "foos*" {
+    export const foos: string;
+>foos : string
+}
+
+declare module "*!text" {
+    const x: string;
+>x : string
+
+    export default x;
+>x : string
+}
+
diff --git a/tests/baselines/reference/ambientDeclarationsPatterns_tooManyAsterisks.errors.txt b/tests/baselines/reference/ambientDeclarationsPatterns_tooManyAsterisks.errors.txt
new file mode 100644
index 00000000000..7a3ff02aa5e
--- /dev/null
+++ b/tests/baselines/reference/ambientDeclarationsPatterns_tooManyAsterisks.errors.txt
@@ -0,0 +1,8 @@
+tests/cases/conformance/ambient/ambientDeclarationsPatterns_tooManyAsterisks.ts(1,16): error TS5061: Pattern 'too*many*asterisks' can have at most one '*' character
+
+
+==== tests/cases/conformance/ambient/ambientDeclarationsPatterns_tooManyAsterisks.ts (1 errors) ====
+    declare module "too*many*asterisks" { }
+                   ~~~~~~~~~~~~~~~~~~~~
+!!! error TS5061: Pattern 'too*many*asterisks' can have at most one '*' character
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/ambientDeclarationsPatterns_tooManyAsterisks.js b/tests/baselines/reference/ambientDeclarationsPatterns_tooManyAsterisks.js
new file mode 100644
index 00000000000..a664eb84dc5
--- /dev/null
+++ b/tests/baselines/reference/ambientDeclarationsPatterns_tooManyAsterisks.js
@@ -0,0 +1,5 @@
+//// [ambientDeclarationsPatterns_tooManyAsterisks.ts]
+declare module "too*many*asterisks" { }
+
+
+//// [ambientDeclarationsPatterns_tooManyAsterisks.js]
diff --git a/tests/cases/conformance/ambient/ambientDeclarationsPatterns.ts b/tests/cases/conformance/ambient/ambientDeclarationsPatterns.ts
index 43e373ba9de..d48f50bfa50 100644
--- a/tests/cases/conformance/ambient/ambientDeclarationsPatterns.ts
+++ b/tests/cases/conformance/ambient/ambientDeclarationsPatterns.ts
@@ -1,18 +1,20 @@
 // @Filename: declarations.d.ts
 declare module "foo*baz" {
-    export function foo(n: number): void;
+    export function foo(s: string): void;
 }
 // Augmentations still work
 declare module "foo*baz" {
-    export const baz: number;
+    export const baz: string;
 }
 
-// Should be an error
-declare module "too*many*asterisks" { }
-
 // Longest prefix wins
 declare module "foos*" {
-    export const foos: number;
+    export const foos: string;
+}
+
+declare module "*!text" {
+    const x: string;
+    export default x;
 }
 
 // @Filename: user.ts
@@ -21,3 +23,8 @@ import {foo, baz} from "foobarbaz";
 foo(baz);
 
 import {foos} from "foosball";
+foo(foos);
+
+// Works with relative file name
+import fileText from "./file!text";
+foo(fileText);
diff --git a/tests/cases/conformance/ambient/ambientDeclarationsPatterns_tooManyAsterisks.ts b/tests/cases/conformance/ambient/ambientDeclarationsPatterns_tooManyAsterisks.ts
new file mode 100644
index 00000000000..76f9081906c
--- /dev/null
+++ b/tests/cases/conformance/ambient/ambientDeclarationsPatterns_tooManyAsterisks.ts
@@ -0,0 +1 @@
+declare module "too*many*asterisks" { }