diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index b855103d9bf..7e692dc78b8 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -2192,16 +2192,16 @@ namespace ts {
             }
 
             function buildBindingPatternDisplay(bindingPattern: BindingPattern, writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags, symbolStack?: Symbol[]) {
-                // We have to explicitly emit square bracket and bracket because these tokens are not store inside the node.
+                // We have to explicitly emit square bracket and bracket because these tokens are not stored inside the node.
                 if (bindingPattern.kind === SyntaxKind.ObjectBindingPattern) {
                     writePunctuation(writer, SyntaxKind.OpenBraceToken);
-                    buildDisplayForCommaSeparatedList(bindingPattern.elements, writer, enclosingDeclaration, flags, symbolStack, buildBindingElementDisplay);
+                    buildDisplayForCommaSeparatedList(bindingPattern.elements, writer, e => buildBindingElementDisplay(e, writer, enclosingDeclaration, flags, symbolStack));
                     writePunctuation(writer, SyntaxKind.CloseBraceToken);
                 }
                 else if (bindingPattern.kind === SyntaxKind.ArrayBindingPattern) {
                     writePunctuation(writer, SyntaxKind.OpenBracketToken);
                     const elements = bindingPattern.elements;
-                    buildDisplayForCommaSeparatedList(elements, writer, enclosingDeclaration, flags, symbolStack, buildBindingElementDisplay);
+                    buildDisplayForCommaSeparatedList(elements, writer, e => buildBindingElementDisplay(e, writer, enclosingDeclaration, flags, symbolStack));
                     if (elements && elements.hasTrailingComma) {
                         writePunctuation(writer, SyntaxKind.CommaToken);
                     }
@@ -2217,35 +2217,34 @@ namespace ts {
                 if (bindingElement.propertyName) {
                     writer.writeSymbol(getTextOfNode(bindingElement.propertyName), bindingElement.symbol);
                     writePunctuation(writer, SyntaxKind.ColonToken);
+                    writeSpace(writer);
                 }
-                if (bindingElement.name) {
-                    if (isBindingPattern(bindingElement.name)) {
-                        buildBindingPatternDisplay(<BindingPattern>bindingElement.name, writer, enclosingDeclaration, flags, symbolStack);
-                    }
-                    else {
-                        if (bindingElement.dotDotDotToken) {
-                            writePunctuation(writer, SyntaxKind.DotDotDotToken);
-                        }
-                        appendSymbolNameOnly(bindingElement.symbol, writer);
+                if (isBindingPattern(bindingElement.name)) {
+                    buildBindingPatternDisplay(<BindingPattern>bindingElement.name, writer, enclosingDeclaration, flags, symbolStack);
+                }   
+                else {
+                    if (bindingElement.dotDotDotToken) {
+                        writePunctuation(writer, SyntaxKind.DotDotDotToken);
                     }
+                    appendSymbolNameOnly(bindingElement.symbol, writer);
                 }
             }
 
             function buildDisplayForTypeParametersAndDelimiters(typeParameters: TypeParameter[], writer: SymbolWriter, enclosingDeclaration?: Node, flags?: TypeFormatFlags, symbolStack?: Symbol[]) {
                 if (typeParameters && typeParameters.length) {
                     writePunctuation(writer, SyntaxKind.LessThanToken);
-                    buildDisplayForCommaSeparatedList(typeParameters, writer, enclosingDeclaration, flags, symbolStack, buildTypeParameterDisplay);
+                    buildDisplayForCommaSeparatedList(typeParameters, writer, p => buildTypeParameterDisplay(p, writer, enclosingDeclaration, flags, symbolStack));
                     writePunctuation(writer, SyntaxKind.GreaterThanToken);
                 }
             }
 
-            function buildDisplayForCommaSeparatedList<T>(list: T[], writer: SymbolWriter, enclosingDeclaration: Node, flags: TypeFormatFlags, symbolStack: Symbol[], action: (item: T, writer: SymbolWriter, enclosingDeclaration: Node, flags: TypeFormatFlags, symbolStack: Symbol[]) => void) {
+            function buildDisplayForCommaSeparatedList<T>(list: T[], writer: SymbolWriter, action: (item: T) => void) {
                 for (let i = 0; i < list.length; i++) {
                     if (i > 0) {
                         writePunctuation(writer, SyntaxKind.CommaToken);
                         writeSpace(writer);
                     }
-                    action(list[i], writer, enclosingDeclaration, flags, symbolStack);
+                    action(list[i]);
                 }
             }
 
diff --git a/tests/baselines/reference/arrowFunctionExpressions.types b/tests/baselines/reference/arrowFunctionExpressions.types
index 9efc2db7a3b..41344c61cc4 100644
--- a/tests/baselines/reference/arrowFunctionExpressions.types
+++ b/tests/baselines/reference/arrowFunctionExpressions.types
@@ -88,8 +88,8 @@ var p6 = ({ a }) => { };
 >a : any
 
 var p7 = ({ a: { b } }) => { };
->p7 : ({a:{b}}: { a: { b: any; }; }) => void
->({ a: { b } }) => { } : ({a:{b}}: { a: { b: any; }; }) => void
+>p7 : ({a: {b}}: { a: { b: any; }; }) => void
+>({ a: { b } }) => { } : ({a: {b}}: { a: { b: any; }; }) => void
 >a : any
 >b : any
 
@@ -100,8 +100,8 @@ var p8 = ({ a = 1 }) => { };
 >1 : number
 
 var p9 = ({ a: { b = 1 } = { b: 1 } }) => { };
->p9 : ({a:{b}}: { a?: { b?: number; }; }) => void
->({ a: { b = 1 } = { b: 1 } }) => { } : ({a:{b}}: { a?: { b?: number; }; }) => void
+>p9 : ({a: {b}}: { a?: { b?: number; }; }) => void
+>({ a: { b = 1 } = { b: 1 } }) => { } : ({a: {b}}: { a?: { b?: number; }; }) => void
 >a : any
 >b : number
 >1 : number
diff --git a/tests/baselines/reference/declarationEmitDestructuring1.types b/tests/baselines/reference/declarationEmitDestructuring1.types
index a1c7acad853..abba67981d8 100644
--- a/tests/baselines/reference/declarationEmitDestructuring1.types
+++ b/tests/baselines/reference/declarationEmitDestructuring1.types
@@ -21,7 +21,7 @@ function bar({a1, b1, c1}: { a1: number, b1: boolean, c1: string }): void { }
 >c1 : string
 
 function baz({a2, b2: {b1, c1}}: { a2: number, b2: { b1: boolean, c1: string } }): void { } 
->baz : ({a2, b2:{b1, c1}}: { a2: number; b2: { b1: boolean; c1: string; }; }) => void
+>baz : ({a2, b2: {b1, c1}}: { a2: number; b2: { b1: boolean; c1: string; }; }) => void
 >a2 : number
 >b2 : any
 >b1 : boolean
diff --git a/tests/baselines/reference/declarationEmit_bindingPatters.js b/tests/baselines/reference/declarationEmit_bindingPatterns.js
similarity index 70%
rename from tests/baselines/reference/declarationEmit_bindingPatters.js
rename to tests/baselines/reference/declarationEmit_bindingPatterns.js
index e97d93dc634..c2063ead215 100644
--- a/tests/baselines/reference/declarationEmit_bindingPatters.js
+++ b/tests/baselines/reference/declarationEmit_bindingPatterns.js
@@ -1,4 +1,4 @@
-//// [declarationEmit_bindingPatters.ts]
+//// [declarationEmit_bindingPatterns.ts]
 
 const k = ({x: z = 'y'}) => { }
 
@@ -6,7 +6,7 @@ var a;
 function f({} = a, [] = a, { p: {} = a} = a) {
 }
 
-//// [declarationEmit_bindingPatters.js]
+//// [declarationEmit_bindingPatterns.js]
 var k = function (_a) {
     var _b = _a.x, z = _b === void 0 ? 'y' : _b;
 };
@@ -18,8 +18,8 @@ function f(_a, _b, _c) {
 }
 
 
-//// [declarationEmit_bindingPatters.d.ts]
-declare const k: ({x:z}: {
+//// [declarationEmit_bindingPatterns.d.ts]
+declare const k: ({x: z}: {
     x?: string;
 }) => void;
 declare var a: any;
diff --git a/tests/baselines/reference/declarationEmit_bindingPatterns.symbols b/tests/baselines/reference/declarationEmit_bindingPatterns.symbols
new file mode 100644
index 00000000000..b39aca17ea3
--- /dev/null
+++ b/tests/baselines/reference/declarationEmit_bindingPatterns.symbols
@@ -0,0 +1,17 @@
+=== tests/cases/compiler/declarationEmit_bindingPatterns.ts ===
+
+const k = ({x: z = 'y'}) => { }
+>k : Symbol(k, Decl(declarationEmit_bindingPatterns.ts, 1, 5))
+>x : Symbol(x)
+>z : Symbol(z, Decl(declarationEmit_bindingPatterns.ts, 1, 12))
+
+var a;
+>a : Symbol(a, Decl(declarationEmit_bindingPatterns.ts, 3, 3))
+
+function f({} = a, [] = a, { p: {} = a} = a) {
+>f : Symbol(f, Decl(declarationEmit_bindingPatterns.ts, 3, 6))
+>a : Symbol(a, Decl(declarationEmit_bindingPatterns.ts, 3, 3))
+>a : Symbol(a, Decl(declarationEmit_bindingPatterns.ts, 3, 3))
+>a : Symbol(a, Decl(declarationEmit_bindingPatterns.ts, 3, 3))
+>a : Symbol(a, Decl(declarationEmit_bindingPatterns.ts, 3, 3))
+}
diff --git a/tests/baselines/reference/declarationEmit_bindingPatterns.types b/tests/baselines/reference/declarationEmit_bindingPatterns.types
new file mode 100644
index 00000000000..eff2d4bd4a3
--- /dev/null
+++ b/tests/baselines/reference/declarationEmit_bindingPatterns.types
@@ -0,0 +1,20 @@
+=== tests/cases/compiler/declarationEmit_bindingPatterns.ts ===
+
+const k = ({x: z = 'y'}) => { }
+>k : ({x: z}: { x?: string; }) => void
+>({x: z = 'y'}) => { } : ({x: z}: { x?: string; }) => void
+>x : any
+>z : string
+>'y' : string
+
+var a;
+>a : any
+
+function f({} = a, [] = a, { p: {} = a} = a) {
+>f : ({}?: any, []?: any, {p: {}}?: any) => void
+>a : any
+>a : any
+>p : any
+>a : any
+>a : any
+}
diff --git a/tests/baselines/reference/declarationEmit_bindingPatters.symbols b/tests/baselines/reference/declarationEmit_bindingPatters.symbols
deleted file mode 100644
index 522166ed511..00000000000
--- a/tests/baselines/reference/declarationEmit_bindingPatters.symbols
+++ /dev/null
@@ -1,17 +0,0 @@
-=== tests/cases/compiler/declarationEmit_bindingPatters.ts ===
-
-const k = ({x: z = 'y'}) => { }
->k : Symbol(k, Decl(declarationEmit_bindingPatters.ts, 1, 5))
->x : Symbol(x)
->z : Symbol(z, Decl(declarationEmit_bindingPatters.ts, 1, 12))
-
-var a;
->a : Symbol(a, Decl(declarationEmit_bindingPatters.ts, 3, 3))
-
-function f({} = a, [] = a, { p: {} = a} = a) {
->f : Symbol(f, Decl(declarationEmit_bindingPatters.ts, 3, 6))
->a : Symbol(a, Decl(declarationEmit_bindingPatters.ts, 3, 3))
->a : Symbol(a, Decl(declarationEmit_bindingPatters.ts, 3, 3))
->a : Symbol(a, Decl(declarationEmit_bindingPatters.ts, 3, 3))
->a : Symbol(a, Decl(declarationEmit_bindingPatters.ts, 3, 3))
-}
diff --git a/tests/baselines/reference/declarationEmit_bindingPatters.types b/tests/baselines/reference/declarationEmit_bindingPatters.types
deleted file mode 100644
index 44c5b3e9f43..00000000000
--- a/tests/baselines/reference/declarationEmit_bindingPatters.types
+++ /dev/null
@@ -1,20 +0,0 @@
-=== tests/cases/compiler/declarationEmit_bindingPatters.ts ===
-
-const k = ({x: z = 'y'}) => { }
->k : ({x:z}: { x?: string; }) => void
->({x: z = 'y'}) => { } : ({x:z}: { x?: string; }) => void
->x : any
->z : string
->'y' : string
-
-var a;
->a : any
-
-function f({} = a, [] = a, { p: {} = a} = a) {
->f : ({}?: any, []?: any, {p:{}}?: any) => void
->a : any
->a : any
->p : any
->a : any
->a : any
-}
diff --git a/tests/baselines/reference/destructuringInFunctionType.types b/tests/baselines/reference/destructuringInFunctionType.types
index 93e702225b5..0cf057e06a3 100644
--- a/tests/baselines/reference/destructuringInFunctionType.types
+++ b/tests/baselines/reference/destructuringInFunctionType.types
@@ -40,7 +40,7 @@ type T3 = ([{ a: b }, { b: a }]);
 >a : a
 
 type F3 = ([{ a: b }, { b: a }]) => void;
->F3 : ([{a:b}, {b:a}]: [{ a: any; }, { b: any; }]) => void
+>F3 : ([{a: b}, {b: a}]: [{ a: any; }, { b: any; }]) => void
 >a : any
 >b : any
 >b : any
@@ -53,13 +53,13 @@ type T4 = ([{ a: [b, c] }]);
 >c : c
 
 type F4 = ([{ a: [b, c] }]) => void;
->F4 : ([{a:[b, c]}]: [{ a: [any, any]; }]) => void
+>F4 : ([{a: [b, c]}]: [{ a: [any, any]; }]) => void
 >a : any
 >b : any
 >c : any
 
 type C1 = new ([{ a: [b, c] }]) => void;
->C1 : new ([{a:[b, c]}]: [{ a: [any, any]; }]) => void
+>C1 : new ([{a: [b, c]}]: [{ a: [any, any]; }]) => void
 >a : any
 >b : any
 >c : any
diff --git a/tests/baselines/reference/destructuringWithLiteralInitializers.types b/tests/baselines/reference/destructuringWithLiteralInitializers.types
index 97e9b8d095a..9b970679f74 100644
--- a/tests/baselines/reference/destructuringWithLiteralInitializers.types
+++ b/tests/baselines/reference/destructuringWithLiteralInitializers.types
@@ -170,7 +170,7 @@ f6({ x: 1, y: 1 });
 
 // (arg?: { a: { x?: number, y?: number } }) => void
 function f7({ a: { x = 0, y = 0 } } = { a: {} }) { }
->f7 : ({a:{x, y}}?: { a: { x?: number; y?: number; }; }) => void
+>f7 : ({a: {x, y}}?: { a: { x?: number; y?: number; }; }) => void
 >a : any
 >x : number
 >0 : number
@@ -182,18 +182,18 @@ function f7({ a: { x = 0, y = 0 } } = { a: {} }) { }
 
 f7();
 >f7() : void
->f7 : ({a:{x, y}}?: { a: { x?: number; y?: number; }; }) => void
+>f7 : ({a: {x, y}}?: { a: { x?: number; y?: number; }; }) => void
 
 f7({ a: {} });
 >f7({ a: {} }) : void
->f7 : ({a:{x, y}}?: { a: { x?: number; y?: number; }; }) => void
+>f7 : ({a: {x, y}}?: { a: { x?: number; y?: number; }; }) => void
 >{ a: {} } : { a: {}; }
 >a : {}
 >{} : {}
 
 f7({ a: { x: 1 } });
 >f7({ a: { x: 1 } }) : void
->f7 : ({a:{x, y}}?: { a: { x?: number; y?: number; }; }) => void
+>f7 : ({a: {x, y}}?: { a: { x?: number; y?: number; }; }) => void
 >{ a: { x: 1 } } : { a: { x: number; }; }
 >a : { x: number; }
 >{ x: 1 } : { x: number; }
@@ -202,7 +202,7 @@ f7({ a: { x: 1 } });
 
 f7({ a: { y: 1 } });
 >f7({ a: { y: 1 } }) : void
->f7 : ({a:{x, y}}?: { a: { x?: number; y?: number; }; }) => void
+>f7 : ({a: {x, y}}?: { a: { x?: number; y?: number; }; }) => void
 >{ a: { y: 1 } } : { a: { y: number; }; }
 >a : { y: number; }
 >{ y: 1 } : { y: number; }
@@ -211,7 +211,7 @@ f7({ a: { y: 1 } });
 
 f7({ a: { x: 1, y: 1 } });
 >f7({ a: { x: 1, y: 1 } }) : void
->f7 : ({a:{x, y}}?: { a: { x?: number; y?: number; }; }) => void
+>f7 : ({a: {x, y}}?: { a: { x?: number; y?: number; }; }) => void
 >{ a: { x: 1, y: 1 } } : { a: { x: number; y: number; }; }
 >a : { x: number; y: number; }
 >{ x: 1, y: 1 } : { x: number; y: number; }
diff --git a/tests/baselines/reference/emitArrowFunctionES6.types b/tests/baselines/reference/emitArrowFunctionES6.types
index 1730ef25534..d37c08f855c 100644
--- a/tests/baselines/reference/emitArrowFunctionES6.types
+++ b/tests/baselines/reference/emitArrowFunctionES6.types
@@ -75,8 +75,8 @@ var p6 = ({ a }) => { };
 >a : any
 
 var p7 = ({ a: { b } }) => { };
->p7 : ({a:{b}}: { a: { b: any; }; }) => void
->({ a: { b } }) => { } : ({a:{b}}: { a: { b: any; }; }) => void
+>p7 : ({a: {b}}: { a: { b: any; }; }) => void
+>({ a: { b } }) => { } : ({a: {b}}: { a: { b: any; }; }) => void
 >a : any
 >b : any
 
@@ -87,8 +87,8 @@ var p8 = ({ a = 1 }) => { };
 >1 : number
 
 var p9 = ({ a: { b = 1 } = { b: 1 } }) => { };
->p9 : ({a:{b}}: { a?: { b?: number; }; }) => void
->({ a: { b = 1 } = { b: 1 } }) => { } : ({a:{b}}: { a?: { b?: number; }; }) => void
+>p9 : ({a: {b}}: { a?: { b?: number; }; }) => void
+>({ a: { b = 1 } = { b: 1 } }) => { } : ({a: {b}}: { a?: { b?: number; }; }) => void
 >a : any
 >b : number
 >1 : number
diff --git a/tests/baselines/reference/emptyVariableDeclarationBindingPatterns01_ES5.types b/tests/baselines/reference/emptyVariableDeclarationBindingPatterns01_ES5.types
index a9a9366ae22..3640d468a59 100644
--- a/tests/baselines/reference/emptyVariableDeclarationBindingPatterns01_ES5.types
+++ b/tests/baselines/reference/emptyVariableDeclarationBindingPatterns01_ES5.types
@@ -62,7 +62,7 @@
     }
 
     function f({} = a, [] = a, { p: {} = a} = a) {
->f : ({}?: any, []?: any, {p:{}}?: any) => ({}?: any, []?: any, {p:{}}?: any) => any
+>f : ({}?: any, []?: any, {p: {}}?: any) => ({}?: any, []?: any, {p: {}}?: any) => any
 >a : any
 >a : any
 >p : any
@@ -70,7 +70,7 @@
 >a : any
 
         return ({} = a, [] = a, { p: {} = a } = a) => a;
->({} = a, [] = a, { p: {} = a } = a) => a : ({}?: any, []?: any, {p:{}}?: any) => any
+>({} = a, [] = a, { p: {} = a } = a) => a : ({}?: any, []?: any, {p: {}}?: any) => any
 >a : any
 >a : any
 >p : any
diff --git a/tests/baselines/reference/emptyVariableDeclarationBindingPatterns01_ES6.types b/tests/baselines/reference/emptyVariableDeclarationBindingPatterns01_ES6.types
index 09e1f0b853b..20b7d5ec2b6 100644
--- a/tests/baselines/reference/emptyVariableDeclarationBindingPatterns01_ES6.types
+++ b/tests/baselines/reference/emptyVariableDeclarationBindingPatterns01_ES6.types
@@ -62,7 +62,7 @@
     }
 
     function f({} = a, [] = a, { p: {} = a} = a) {
->f : ({}?: any, []?: any, {p:{}}?: any) => ({}?: any, []?: any, {p:{}}?: any) => any
+>f : ({}?: any, []?: any, {p: {}}?: any) => ({}?: any, []?: any, {p: {}}?: any) => any
 >a : any
 >a : any
 >p : any
@@ -70,7 +70,7 @@
 >a : any
 
         return ({} = a, [] = a, { p: {} = a } = a) => a;
->({} = a, [] = a, { p: {} = a } = a) => a : ({}?: any, []?: any, {p:{}}?: any) => any
+>({} = a, [] = a, { p: {} = a } = a) => a : ({}?: any, []?: any, {p: {}}?: any) => any
 >a : any
 >a : any
 >p : any
diff --git a/tests/baselines/reference/sourceMapValidationDestructuringParameterNestedObjectBindingPattern.types b/tests/baselines/reference/sourceMapValidationDestructuringParameterNestedObjectBindingPattern.types
index 323612ffc94..af27c32d15b 100644
--- a/tests/baselines/reference/sourceMapValidationDestructuringParameterNestedObjectBindingPattern.types
+++ b/tests/baselines/reference/sourceMapValidationDestructuringParameterNestedObjectBindingPattern.types
@@ -37,7 +37,7 @@ var robotA: Robot = { name: "mower", skills: { primary: "mowing", secondary: "no
 >"none" : string
 
 function foo1({ skills: { primary: primaryA, secondary: secondaryA } }: Robot) {
->foo1 : ({skills:{primary:primaryA, secondary:secondaryA}}: Robot) => void
+>foo1 : ({skills: {primary: primaryA, secondary: secondaryA}}: Robot) => void
 >skills : any
 >primary : any
 >primaryA : string
@@ -53,7 +53,7 @@ function foo1({ skills: { primary: primaryA, secondary: secondaryA } }: Robot) {
 >primaryA : string
 }
 function foo2({ name: nameC, skills: { primary: primaryB, secondary: secondaryB } }: Robot) {
->foo2 : ({name:nameC, skills:{primary:primaryB, secondary:secondaryB}}: Robot) => void
+>foo2 : ({name: nameC, skills: {primary: primaryB, secondary: secondaryB}}: Robot) => void
 >name : any
 >nameC : string
 >skills : any
@@ -87,12 +87,12 @@ function foo3({ skills }: Robot) {
 
 foo1(robotA);
 >foo1(robotA) : void
->foo1 : ({skills:{primary:primaryA, secondary:secondaryA}}: Robot) => void
+>foo1 : ({skills: {primary: primaryA, secondary: secondaryA}}: Robot) => void
 >robotA : Robot
 
 foo1({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } });
 >foo1({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } }) : void
->foo1 : ({skills:{primary:primaryA, secondary:secondaryA}}: Robot) => void
+>foo1 : ({skills: {primary: primaryA, secondary: secondaryA}}: Robot) => void
 >{ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } } : { name: string; skills: { primary: string; secondary: string; }; }
 >name : string
 >"Edger" : string
@@ -105,12 +105,12 @@ foo1({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming"
 
 foo2(robotA);
 >foo2(robotA) : void
->foo2 : ({name:nameC, skills:{primary:primaryB, secondary:secondaryB}}: Robot) => void
+>foo2 : ({name: nameC, skills: {primary: primaryB, secondary: secondaryB}}: Robot) => void
 >robotA : Robot
 
 foo2({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } });
 >foo2({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } }) : void
->foo2 : ({name:nameC, skills:{primary:primaryB, secondary:secondaryB}}: Robot) => void
+>foo2 : ({name: nameC, skills: {primary: primaryB, secondary: secondaryB}}: Robot) => void
 >{ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } } : { name: string; skills: { primary: string; secondary: string; }; }
 >name : string
 >"Edger" : string
diff --git a/tests/baselines/reference/sourceMapValidationDestructuringParameterNestedObjectBindingPatternDefaultValues.types b/tests/baselines/reference/sourceMapValidationDestructuringParameterNestedObjectBindingPatternDefaultValues.types
index 5d8cbc311ae..1115931feef 100644
--- a/tests/baselines/reference/sourceMapValidationDestructuringParameterNestedObjectBindingPatternDefaultValues.types
+++ b/tests/baselines/reference/sourceMapValidationDestructuringParameterNestedObjectBindingPatternDefaultValues.types
@@ -37,7 +37,7 @@ var robotA: Robot = { name: "mower", skills: { primary: "mowing", secondary: "no
 >"none" : string
 
 function foo1(
->foo1 : ({skills:{primary:primaryA, secondary:secondaryA}}?: Robot) => void
+>foo1 : ({skills: {primary: primaryA, secondary: secondaryA}}?: Robot) => void
     {
         skills: {
 >skills : any
@@ -71,7 +71,7 @@ function foo1(
 >primaryA : string
 }
 function foo2(
->foo2 : ({name:nameC, skills:{primary:primaryB, secondary:secondaryB}}?: Robot) => void
+>foo2 : ({name: nameC, skills: {primary: primaryB, secondary: secondaryB}}?: Robot) => void
     {
         name: nameC = "name",
 >name : any
@@ -132,12 +132,12 @@ function foo3({ skills = { primary: "SomeSkill", secondary: "someSkill" }  }: Ro
 
 foo1(robotA);
 >foo1(robotA) : void
->foo1 : ({skills:{primary:primaryA, secondary:secondaryA}}?: Robot) => void
+>foo1 : ({skills: {primary: primaryA, secondary: secondaryA}}?: Robot) => void
 >robotA : Robot
 
 foo1({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } });
 >foo1({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } }) : void
->foo1 : ({skills:{primary:primaryA, secondary:secondaryA}}?: Robot) => void
+>foo1 : ({skills: {primary: primaryA, secondary: secondaryA}}?: Robot) => void
 >{ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } } : { name: string; skills: { primary: string; secondary: string; }; }
 >name : string
 >"Edger" : string
@@ -150,12 +150,12 @@ foo1({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming"
 
 foo2(robotA);
 >foo2(robotA) : void
->foo2 : ({name:nameC, skills:{primary:primaryB, secondary:secondaryB}}?: Robot) => void
+>foo2 : ({name: nameC, skills: {primary: primaryB, secondary: secondaryB}}?: Robot) => void
 >robotA : Robot
 
 foo2({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } });
 >foo2({ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } }) : void
->foo2 : ({name:nameC, skills:{primary:primaryB, secondary:secondaryB}}?: Robot) => void
+>foo2 : ({name: nameC, skills: {primary: primaryB, secondary: secondaryB}}?: Robot) => void
 >{ name: "Edger", skills: { primary: "edging", secondary: "branch trimming" } } : { name: string; skills: { primary: string; secondary: string; }; }
 >name : string
 >"Edger" : string
diff --git a/tests/baselines/reference/sourceMapValidationDestructuringParameterObjectBindingPattern.types b/tests/baselines/reference/sourceMapValidationDestructuringParameterObjectBindingPattern.types
index 9154ba582d8..6b8f26acf43 100644
--- a/tests/baselines/reference/sourceMapValidationDestructuringParameterObjectBindingPattern.types
+++ b/tests/baselines/reference/sourceMapValidationDestructuringParameterObjectBindingPattern.types
@@ -29,7 +29,7 @@ var robotA: Robot = { name: "mower", skill: "mowing" };
 >"mowing" : string
 
 function foo1({ name: nameA }: Robot) {
->foo1 : ({name:nameA}: Robot) => void
+>foo1 : ({name: nameA}: Robot) => void
 >name : any
 >nameA : string
 >Robot : Robot
@@ -42,7 +42,7 @@ function foo1({ name: nameA }: Robot) {
 >nameA : string
 }
 function foo2({ name: nameB, skill: skillB }: Robot) {
->foo2 : ({name:nameB, skill:skillB}: Robot) => void
+>foo2 : ({name: nameB, skill: skillB}: Robot) => void
 >name : any
 >nameB : string
 >skill : any
@@ -71,12 +71,12 @@ function foo3({ name }: Robot) {
 
 foo1(robotA);
 >foo1(robotA) : void
->foo1 : ({name:nameA}: Robot) => void
+>foo1 : ({name: nameA}: Robot) => void
 >robotA : Robot
 
 foo1({ name: "Edger", skill: "cutting edges" });
 >foo1({ name: "Edger", skill: "cutting edges" }) : void
->foo1 : ({name:nameA}: Robot) => void
+>foo1 : ({name: nameA}: Robot) => void
 >{ name: "Edger", skill: "cutting edges" } : { name: string; skill: string; }
 >name : string
 >"Edger" : string
@@ -85,12 +85,12 @@ foo1({ name: "Edger", skill: "cutting edges" });
 
 foo2(robotA);
 >foo2(robotA) : void
->foo2 : ({name:nameB, skill:skillB}: Robot) => void
+>foo2 : ({name: nameB, skill: skillB}: Robot) => void
 >robotA : Robot
 
 foo2({ name: "Edger", skill: "cutting edges" });
 >foo2({ name: "Edger", skill: "cutting edges" }) : void
->foo2 : ({name:nameB, skill:skillB}: Robot) => void
+>foo2 : ({name: nameB, skill: skillB}: Robot) => void
 >{ name: "Edger", skill: "cutting edges" } : { name: string; skill: string; }
 >name : string
 >"Edger" : string
diff --git a/tests/baselines/reference/sourceMapValidationDestructuringParameterObjectBindingPatternDefaultValues.types b/tests/baselines/reference/sourceMapValidationDestructuringParameterObjectBindingPatternDefaultValues.types
index ed7090d4fc8..253c5feae8f 100644
--- a/tests/baselines/reference/sourceMapValidationDestructuringParameterObjectBindingPatternDefaultValues.types
+++ b/tests/baselines/reference/sourceMapValidationDestructuringParameterObjectBindingPatternDefaultValues.types
@@ -29,7 +29,7 @@ var robotA: Robot = { name: "mower", skill: "mowing" };
 >"mowing" : string
 
 function foo1({ name: nameA = "<NoName>" }: Robot = { }) {
->foo1 : ({name:nameA}?: Robot) => void
+>foo1 : ({name: nameA}?: Robot) => void
 >name : any
 >nameA : string
 >"<NoName>" : string
@@ -44,7 +44,7 @@ function foo1({ name: nameA = "<NoName>" }: Robot = { }) {
 >nameA : string
 }
 function foo2({ name: nameB = "<NoName>", skill: skillB = "noSkill" }: Robot = {}) {
->foo2 : ({name:nameB, skill:skillB}?: Robot) => void
+>foo2 : ({name: nameB, skill: skillB}?: Robot) => void
 >name : any
 >nameB : string
 >"<NoName>" : string
@@ -78,12 +78,12 @@ function foo3({ name = "<NoName>" }: Robot = {}) {
 
 foo1(robotA);
 >foo1(robotA) : void
->foo1 : ({name:nameA}?: Robot) => void
+>foo1 : ({name: nameA}?: Robot) => void
 >robotA : Robot
 
 foo1({ name: "Edger", skill: "cutting edges" });
 >foo1({ name: "Edger", skill: "cutting edges" }) : void
->foo1 : ({name:nameA}?: Robot) => void
+>foo1 : ({name: nameA}?: Robot) => void
 >{ name: "Edger", skill: "cutting edges" } : { name: string; skill: string; }
 >name : string
 >"Edger" : string
@@ -92,12 +92,12 @@ foo1({ name: "Edger", skill: "cutting edges" });
 
 foo2(robotA);
 >foo2(robotA) : void
->foo2 : ({name:nameB, skill:skillB}?: Robot) => void
+>foo2 : ({name: nameB, skill: skillB}?: Robot) => void
 >robotA : Robot
 
 foo2({ name: "Edger", skill: "cutting edges" });
 >foo2({ name: "Edger", skill: "cutting edges" }) : void
->foo2 : ({name:nameB, skill:skillB}?: Robot) => void
+>foo2 : ({name: nameB, skill: skillB}?: Robot) => void
 >{ name: "Edger", skill: "cutting edges" } : { name: string; skill: string; }
 >name : string
 >"Edger" : string
diff --git a/tests/cases/compiler/declarationEmit_bindingPatters.ts b/tests/cases/compiler/declarationEmit_bindingPatterns.ts
similarity index 100%
rename from tests/cases/compiler/declarationEmit_bindingPatters.ts
rename to tests/cases/compiler/declarationEmit_bindingPatterns.ts