Add Flow libdef for fb-dotslash

Author: motiz88

flow-typed/npm/fb-dotslash_v0.x.x.js

@@ -0,0 +1,13 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+declare module 'fb-dotslash' {
+  declare module.exports: string;
+}

packages/debugger-shell/src/node/index.flow.js

@@ -152,11 +152,7 @@ function getShellBinaryAndArgs(
 ): [string, Array<string>] {
   switch (flavor) {
     case 'prebuilt':
-      return [
-        // $FlowFixMe[cannot-resolve-module] fb-dotslash includes Flow types but Flow does not pick them up
-        require('fb-dotslash'),
-        [DEVTOOLS_BINARY_DOTSLASH_FILE],
-      ];
+      return [require('fb-dotslash'), [DEVTOOLS_BINARY_DOTSLASH_FILE]];
     case 'dev':
       return [
         // NOTE: Internally at Meta, this is aliased to a workspace that is

packages/debugger-shell/src/node/private/LaunchUtils.js

@@ -44,11 +44,11 @@ async function spawnAndGetStderr(
 async function prepareDebuggerShellFromDotSlashFile(
   filePath: string,
 ): Promise<DebuggerShellPreparationResult> {
-  const {code, stderr} = await spawnAndGetStderr(
-    // $FlowFixMe[cannot-resolve-module] fb-dotslash includes Flow types but Flow does not pick them up
-    require('fb-dotslash'),
-    ['--', 'fetch', filePath],
-  );
+  const {code, stderr} = await spawnAndGetStderr(require('fb-dotslash'), [
+    '--',
+    'fetch',
+    filePath,
+  ]);
   if (code === 0) {
     return {code: 'success'};
   }