Remove dev-mode Hermes bytecode experiment

Summary: Changelog: * **[Internal]**: Remove experimental `metro-hermes-compiler` package. * **[Fix]**: Remove spammy warning about a possible EventEmitter memory leak. Removes the `metro-hermes-compiler` package and associated support for compiling JS to bytecode within Metro. This code was part of an unreleased experiment to offload Hermes bytecode compilation in React Native to Metro. Reviewed By: robhogan Differential Revision: D43604706 fbshipit-source-id: a449a51435c3eecef42ff8e7951bebb4661aee9c
facebook · Mar 21, 2023 · 833f2ff · 833f2ff
1 parent 8a43c11
commit 833f2ff
Show file tree

Hide file tree

Showing 42 changed files with 17 additions and 1,573 deletions.
diff --git a/packages/metro-hermes-compiler/.npmignore b/packages/metro-hermes-compiler/.npmignore
diff --git a/packages/metro-hermes-compiler/README.md b/packages/metro-hermes-compiler/README.md
diff --git a/packages/metro-hermes-compiler/package.json b/packages/metro-hermes-compiler/package.json
diff --git a/packages/metro-hermes-compiler/src/__tests__/index-test.js b/packages/metro-hermes-compiler/src/__tests__/index-test.js
diff --git a/packages/metro-hermes-compiler/src/emhermesc.js b/packages/metro-hermes-compiler/src/emhermesc.js
diff --git a/packages/metro-hermes-compiler/src/emhermesc.js.flow b/packages/metro-hermes-compiler/src/emhermesc.js.flow
diff --git a/packages/metro-hermes-compiler/src/index.js b/packages/metro-hermes-compiler/src/index.js
diff --git a/packages/metro-runtime/src/modules/types.flow.js b/packages/metro-runtime/src/modules/types.flow.js
@@ -12,20 +12,13 @@
 'use strict';
 
 export type ModuleMap = $ReadOnlyArray<[number, string]>;
-export type BytecodeModuleMap = $ReadOnlyArray<[number, Array<Buffer>]>;
 
 export type Bundle = {
   +modules: ModuleMap,
   +post: string,
   +pre: string,
 };
 
-export type BytecodeBundle = {
-  +modules: BytecodeModuleMap,
-  +post: Array<Buffer>,
-  +pre: Array<Buffer>,
-};
-
 export type DeltaBundle = {
   +added: ModuleMap,
   +modified: ModuleMap,

diff --git a/packages/metro-transform-worker/package.json b/packages/metro-transform-worker/package.json
@@ -22,7 +22,6 @@
     "metro-babel-transformer": "0.76.0",
     "metro-cache": "0.76.0",
     "metro-cache-key": "0.76.0",
-    "metro-hermes-compiler": "0.76.0",
     "metro-source-map": "0.76.0",
     "metro-transform-plugins": "0.76.0",
     "nullthrows": "^1.1.1"