refactor(supervisor): share env normalization

src/process/supervisor/adapters/child.ts

@@ -2,6 +2,7 @@ import type { ChildProcessWithoutNullStreams, SpawnOptions } from "node:child_pr
 import type { ManagedRunStdin } from "../types.js";
 import { killProcessTree } from "../../kill-tree.js";
 import { spawnWithFallback } from "../../spawn-utils.js";
+import { toStringEnv } from "./env.js";
 
 function resolveCommand(command: string): string {
   if (process.platform !== "win32") {
@@ -18,20 +19,6 @@ function resolveCommand(command: string): string {
   return command;
 }
 
-function toStringEnv(env?: NodeJS.ProcessEnv): Record<string, string> {
-  if (!env) {
-    return {};
-  }
-  const out: Record<string, string> = {};
-  for (const [key, value] of Object.entries(env)) {
-    if (value === undefined) {
-      continue;
-    }
-    out[key] = String(value);
-  }
-  return out;
-}
-
 export type ChildAdapter = {
   pid?: number;
   stdin?: ManagedRunStdin;

src/process/supervisor/adapters/env.ts

@@ -0,0 +1,13 @@
+export function toStringEnv(env?: NodeJS.ProcessEnv): Record<string, string> {
+  if (!env) {
+    return {};
+  }
+  const out: Record<string, string> = {};
+  for (const [key, value] of Object.entries(env)) {
+    if (value === undefined) {
+      continue;
+    }
+    out[key] = String(value);
+  }
+  return out;
+}

src/process/supervisor/adapters/pty.ts

@@ -1,5 +1,6 @@
 import type { ManagedRunStdin } from "../types.js";
 import { killProcessTree } from "../../kill-tree.js";
+import { toStringEnv } from "./env.js";
 
 type PtyExitEvent = { exitCode: number; signal?: number };
 type PtyDisposable = { dispose: () => void };
@@ -29,20 +30,6 @@ type PtyModule = {
   };
 };
 
-function toStringEnv(env?: NodeJS.ProcessEnv): Record<string, string> {
-  if (!env) {
-    return {};
-  }
-  const out: Record<string, string> = {};
-  for (const [key, value] of Object.entries(env)) {
-    if (value === undefined) {
-      continue;
-    }
-    out[key] = String(value);
-  }
-  return out;
-}
-
 export type PtyAdapter = {
   pid?: number;
   stdin?: ManagedRunStdin;