diff --git a/tests/baselines/reference/VariableDeclaration12_es6.js b/tests/baselines/reference/VariableDeclaration12_es6.js
new file mode 100644
index 0000000000000..1e7d6d4b3636a
--- /dev/null
+++ b/tests/baselines/reference/VariableDeclaration12_es6.js
@@ -0,0 +1,7 @@
+//// [VariableDeclaration12_es6.ts]
+
+let
+x
+
+//// [VariableDeclaration12_es6.js]
+let x;
diff --git a/tests/baselines/reference/VariableDeclaration12_es6.symbols b/tests/baselines/reference/VariableDeclaration12_es6.symbols
new file mode 100644
index 0000000000000..a2f324502dd3c
--- /dev/null
+++ b/tests/baselines/reference/VariableDeclaration12_es6.symbols
@@ -0,0 +1,6 @@
+=== tests/cases/conformance/es6/variableDeclarations/VariableDeclaration12_es6.ts ===
+
+let
+x
+>x : Symbol(x, Decl(VariableDeclaration12_es6.ts, 1, 3))
+
diff --git a/tests/baselines/reference/VariableDeclaration12_es6.types b/tests/baselines/reference/VariableDeclaration12_es6.types
new file mode 100644
index 0000000000000..14f23f88a7aa9
--- /dev/null
+++ b/tests/baselines/reference/VariableDeclaration12_es6.types
@@ -0,0 +1,6 @@
+=== tests/cases/conformance/es6/variableDeclarations/VariableDeclaration12_es6.ts ===
+
+let
+x
+>x : any
+
diff --git a/tests/baselines/reference/VariableDeclaration13_es6.errors.txt b/tests/baselines/reference/VariableDeclaration13_es6.errors.txt
new file mode 100644
index 0000000000000..a022a4ad52b43
--- /dev/null
+++ b/tests/baselines/reference/VariableDeclaration13_es6.errors.txt
@@ -0,0 +1,20 @@
+tests/cases/conformance/es6/variableDeclarations/VariableDeclaration13_es6.ts(5,5): error TS1181: Array element destructuring pattern expected.
+tests/cases/conformance/es6/variableDeclarations/VariableDeclaration13_es6.ts(5,6): error TS1005: ',' expected.
+tests/cases/conformance/es6/variableDeclarations/VariableDeclaration13_es6.ts(5,8): error TS1134: Variable declaration expected.
+tests/cases/conformance/es6/variableDeclarations/VariableDeclaration13_es6.ts(5,10): error TS1134: Variable declaration expected.
+
+
+==== tests/cases/conformance/es6/variableDeclarations/VariableDeclaration13_es6.ts (4 errors) ====
+    
+    // An ExpressionStatement cannot start with the two token sequence `let [` because
+    // that would make it ambiguous with a `let` LexicalDeclaration whose first LexicalBinding was an ArrayBindingPattern.
+    var let: any;
+    let[0] = 100;
+        ~
+!!! error TS1181: Array element destructuring pattern expected.
+         ~
+!!! error TS1005: ',' expected.
+           ~
+!!! error TS1134: Variable declaration expected.
+             ~~~
+!!! error TS1134: Variable declaration expected.
\ No newline at end of file
diff --git a/tests/baselines/reference/VariableDeclaration13_es6.js b/tests/baselines/reference/VariableDeclaration13_es6.js
new file mode 100644
index 0000000000000..4ec04b18c3a5e
--- /dev/null
+++ b/tests/baselines/reference/VariableDeclaration13_es6.js
@@ -0,0 +1,13 @@
+//// [VariableDeclaration13_es6.ts]
+
+// An ExpressionStatement cannot start with the two token sequence `let [` because
+// that would make it ambiguous with a `let` LexicalDeclaration whose first LexicalBinding was an ArrayBindingPattern.
+var let: any;
+let[0] = 100;
+
+//// [VariableDeclaration13_es6.js]
+// An ExpressionStatement cannot start with the two token sequence `let [` because
+// that would make it ambiguous with a `let` LexicalDeclaration whose first LexicalBinding was an ArrayBindingPattern.
+var let;
+let [] = 0;
+100;
diff --git a/tests/baselines/reference/letIdentifierInElementAccess01.js b/tests/baselines/reference/letIdentifierInElementAccess01.js
new file mode 100644
index 0000000000000..5e5e857479c6c
--- /dev/null
+++ b/tests/baselines/reference/letIdentifierInElementAccess01.js
@@ -0,0 +1,7 @@
+//// [letIdentifierInElementAccess01.ts]
+var let: any = {};
+(let[0] = 100);
+
+//// [letIdentifierInElementAccess01.js]
+var let = {};
+(let[0] = 100);
diff --git a/tests/baselines/reference/letIdentifierInElementAccess01.symbols b/tests/baselines/reference/letIdentifierInElementAccess01.symbols
new file mode 100644
index 0000000000000..a655b5703b0eb
--- /dev/null
+++ b/tests/baselines/reference/letIdentifierInElementAccess01.symbols
@@ -0,0 +1,7 @@
+=== tests/cases/conformance/expressions/elementAccess/letIdentifierInElementAccess01.ts ===
+var let: any = {};
+>let : Symbol(let, Decl(letIdentifierInElementAccess01.ts, 0, 3))
+
+(let[0] = 100);
+>let : Symbol(let, Decl(letIdentifierInElementAccess01.ts, 0, 3))
+
diff --git a/tests/baselines/reference/letIdentifierInElementAccess01.types b/tests/baselines/reference/letIdentifierInElementAccess01.types
new file mode 100644
index 0000000000000..187fd7e221cbf
--- /dev/null
+++ b/tests/baselines/reference/letIdentifierInElementAccess01.types
@@ -0,0 +1,13 @@
+=== tests/cases/conformance/expressions/elementAccess/letIdentifierInElementAccess01.ts ===
+var let: any = {};
+>let : any
+>{} : {}
+
+(let[0] = 100);
+>(let[0] = 100) : number
+>let[0] = 100 : number
+>let[0] : any
+>let : any
+>0 : number
+>100 : number
+
diff --git a/tests/cases/conformance/es6/variableDeclarations/VariableDeclaration12_es6.ts b/tests/cases/conformance/es6/variableDeclarations/VariableDeclaration12_es6.ts
new file mode 100644
index 0000000000000..f9839cf85026e
--- /dev/null
+++ b/tests/cases/conformance/es6/variableDeclarations/VariableDeclaration12_es6.ts
@@ -0,0 +1,4 @@
+// @target:es6
+
+let
+x
\ No newline at end of file
diff --git a/tests/cases/conformance/es6/variableDeclarations/VariableDeclaration13_es6.ts b/tests/cases/conformance/es6/variableDeclarations/VariableDeclaration13_es6.ts
new file mode 100644
index 0000000000000..0f20b02c01cb5
--- /dev/null
+++ b/tests/cases/conformance/es6/variableDeclarations/VariableDeclaration13_es6.ts
@@ -0,0 +1,6 @@
+// @target:es6
+
+// An ExpressionStatement cannot start with the two token sequence `let [` because
+// that would make it ambiguous with a `let` LexicalDeclaration whose first LexicalBinding was an ArrayBindingPattern.
+var let: any;
+let[0] = 100;
\ No newline at end of file
diff --git a/tests/cases/conformance/expressions/elementAccess/letIdentifierInElementAccess01.ts b/tests/cases/conformance/expressions/elementAccess/letIdentifierInElementAccess01.ts
new file mode 100644
index 0000000000000..f0f71dc6cebe3
--- /dev/null
+++ b/tests/cases/conformance/expressions/elementAccess/letIdentifierInElementAccess01.ts
@@ -0,0 +1,2 @@
+var let: any = {};
+(let[0] = 100);
\ No newline at end of file