From 3d376842537764ceaa296f846f7cbfbeb17d3ffe Mon Sep 17 00:00:00 2001
From: jhmaster <32803471+jhmaster2000@users.noreply.github.com>
Date: Wed, 27 Sep 2023 23:26:03 -0300
Subject: `deadCodeElimination` toggle for Bun.Transpiler (#5932)

* add Bun.Transpiler DCE option

* mark DCE toggle experimental + tests

* full (hopefully) DCE toggle

* update DCE toggle tests

* add DCE option to types

* run fmt

* Removed uws submodule
---
 src/bun.js/api/JSTranspiler.zig | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/bun.js')

diff --git a/src/bun.js/api/JSTranspiler.zig b/src/bun.js/api/JSTranspiler.zig
index 8cec025eb..d41458acb 100644
--- a/src/bun.js/api/JSTranspiler.zig
+++ b/src/bun.js/api/JSTranspiler.zig
@@ -72,6 +72,7 @@ const TranspilerOptions = struct {
     trim_unused_imports: ?bool = null,
     inlining: bool = false,
 
+    dead_code_elimination: bool = true,
     minify_whitespace: bool = false,
     minify_identifiers: bool = false,
     minify_syntax: bool = false,
@@ -541,6 +542,10 @@ fn transformOptionsFromJSC(globalObject: JSC.C.JSContextRef, temp_allocator: std
         transpiler.minify_whitespace = flag.toBoolean();
     }
 
+    if (object.get(globalThis, "deadCodeElimination")) |flag| {
+        transpiler.dead_code_elimination = flag.toBoolean();
+    }
+
     if (object.getTruthy(globalThis, "minify")) |hot| {
         if (hot.isBoolean()) {
             transpiler.minify_whitespace = hot.coerce(bool, globalThis);
@@ -800,6 +805,7 @@ pub fn constructor(
         bundler.options.macro_remap = transpiler_options.macro_map;
     }
 
+    bundler.options.dead_code_elimination = transpiler_options.dead_code_elimination;
     bundler.options.minify_whitespace = transpiler_options.minify_whitespace;
 
     // Keep defaults for these
-- 
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