From a5418e16039776d37c90e0b17762aa8dc65f7828 Mon Sep 17 00:00:00 2001
From: hazzard993 <hazzard993@gmail.com>
Date: Sun, 11 Nov 2018 08:10:56 +1000
Subject: [PATCH 1/2] lualib inline omit header when no features are used

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

diff --git a/src/Transpiler.ts b/src/Transpiler.ts
index 48f697fcc..fd888576a 100644
--- a/src/Transpiler.ts
+++ b/src/Transpiler.ts
@@ -233,7 +233,7 @@ export abstract class LuaTranspiler {
         }
 
         // Inline lualib features
-        if (this.options.luaLibImport === LuaLibImportKind.Inline) {
+        if (this.options.luaLibImport === LuaLibImportKind.Inline && this.luaLibFeatureSet.size > 0) {
             result += "\n" + "-- Lua Library Imports\n";
             for (const feature of this.luaLibFeatureSet) {
                 const featureFile = path.resolve(__dirname, `../dist/lualib/${feature}.lua`);

From 83a17941917aa7ea42271e43bc4c65c283f3d275 Mon Sep 17 00:00:00 2001
From: hazzard993 <hazzard993@gmail.com>
Date: Sun, 11 Nov 2018 08:19:16 +1000
Subject: [PATCH 2/2] Tests to enforce no lualib text when unused, unless using
 always

---
 test/unit/modules.spec.ts | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/test/unit/modules.spec.ts b/test/unit/modules.spec.ts
index 62187e060..7d2509376 100644
--- a/test/unit/modules.spec.ts
+++ b/test/unit/modules.spec.ts
@@ -23,15 +23,6 @@ export class LuaModuleTests {
         Expect(lua.startsWith(`require("lualib_bundle")`));
     }
 
-    @Test("lualibRequireNoUses")
-    public lualibRequireNoUses(): void {
-        // Transpile
-        const lua = util.transpileString(``, { luaLibImport: LuaLibImportKind.Require, luaTarget: LuaTarget.LuaJIT });
-
-        // Assert
-        Expect(lua).toBe(``);
-    }
-
     @Test("lualibRequireAlways")
     public lualibRequireAlways(): void {
         // Transpile
@@ -63,4 +54,16 @@ export class LuaModuleTests {
 
         Expect(result).toBe(3);
     }
+
+    @TestCase(LuaLibImportKind.Inline)
+    @TestCase(LuaLibImportKind.None)
+    @TestCase(LuaLibImportKind.Require)
+    @Test("LuaLib no uses? No code")
+    public lualibNoUsesNoCode(impKind: LuaLibImportKind): void {
+        // Transpile
+        const lua = util.transpileString(``, { luaLibImport: impKind });
+
+        // Assert
+        Expect(lua).toBe(``);
+    }
 }