From 8fc37618fc22ff9e6336801071a207375c3fc321 Mon Sep 17 00:00:00 2001
From: apemanzilla <dominic@marcuse.us>
Date: Wed, 6 Jun 2018 19:18:45 -0400
Subject: [PATCH 1/2] Tuples are also arrays

---
 src/TSHelper.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/TSHelper.ts b/src/TSHelper.ts
index 980a7bfa8..c65361b47 100644
--- a/src/TSHelper.ts
+++ b/src/TSHelper.ts
@@ -47,7 +47,7 @@ export class TSHelper {
 
     public static isArrayType(type: ts.Type, checker: ts.TypeChecker): boolean {
         const typeNode = checker.typeToTypeNode(type);
-        return typeNode && typeNode.kind === ts.SyntaxKind.ArrayType;
+        return typeNode && (typeNode.kind === ts.SyntaxKind.ArrayType || typeNode.kind === ts.SyntaxKind.TupleType);
     }
 
     public static isTupleType(type: ts.Type, checker: ts.TypeChecker): boolean {

From b3775fcc2b9f877f6a721c165c9de7f54ed61f45 Mon Sep 17 00:00:00 2001
From: apemanzilla <dominic@marcuse.us>
Date: Wed, 6 Jun 2018 19:36:00 -0400
Subject: [PATCH 2/2] Remove now obsolete isTupleType call, add test

---
 src/Transpiler.ts                       | 2 +-
 test/translation/lua/tupleArrayUses.lua | 8 ++++++++
 test/translation/ts/tupleArrayUses.ts   | 8 ++++++++
 3 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 test/translation/lua/tupleArrayUses.lua
 create mode 100644 test/translation/ts/tupleArrayUses.ts

diff --git a/src/Transpiler.ts b/src/Transpiler.ts
index 24000ca33..f69336651 100644
--- a/src/Transpiler.ts
+++ b/src/Transpiler.ts
@@ -1158,7 +1158,7 @@ export class LuaTranspiler {
         const index = this.transpileExpression(node.argumentExpression);
 
         const type = this.checker.getTypeAtLocation(node.expression);
-        if (tsHelper.isArrayType(type, this.checker) || tsHelper.isTupleType(type, this.checker)) {
+        if (tsHelper.isArrayType(type, this.checker)) {
             return `${element}[${index}+1]`;
         } else if (tsHelper.isStringType(type)) {
             return `string.sub(${element},${index}+1,${index}+1)`;
diff --git a/test/translation/lua/tupleArrayUses.lua b/test/translation/lua/tupleArrayUses.lua
new file mode 100644
index 000000000..396b53995
--- /dev/null
+++ b/test/translation/lua/tupleArrayUses.lua
@@ -0,0 +1,8 @@
+for _, value in ipairs(tuple) do
+end
+TS_forEach(tuple, function(v)
+end
+)
+local num = tuple[1+1]
+
+local len = #tuple
\ No newline at end of file
diff --git a/test/translation/ts/tupleArrayUses.ts b/test/translation/ts/tupleArrayUses.ts
new file mode 100644
index 000000000..e4fb21307
--- /dev/null
+++ b/test/translation/ts/tupleArrayUses.ts
@@ -0,0 +1,8 @@
+// test cases where tuples are used as arrays
+declare const tuple: [string, number, boolean];
+
+// tslint:disable:no-empty no-unused-expression
+for (const value of tuple) {} // for-of loop
+tuple.forEach(v => {}); // Array.prototype.forEach
+const num = tuple[1]; // array access
+const len = tuple.length; // array length