[Init] Initial commit - NetMesh terminal manager

lib/localShell.ts

@@ -0,0 +1,41 @@
+import localShellRules from "./localShellRules.json";
+
+export type LocalShellType = "posix" | "fish" | "powershell" | "cmd" | "unknown";
+export type LocalOs = "linux" | "macos" | "windows";
+
+const POWERSHELL_SHELLS = new Set(localShellRules.powershellShells);
+const CMD_SHELLS = new Set(localShellRules.cmdShells);
+const FISH_SHELLS = new Set(localShellRules.fishShells);
+const POSIX_SHELLS = new Set(localShellRules.posixShells);
+const WSL_SHELLS = new Set(localShellRules.wslShells);
+
+function getExecutableBaseName(filePath: string | undefined) {
+  const normalized = String(filePath || "").trim();
+  if (!normalized) return "";
+  const parts = normalized.split(/[\\/]/);
+  return (parts[parts.length - 1] || "").toLowerCase();
+}
+
+export function detectLocalOs(platformLike?: string): LocalOs {
+  const platform = String(platformLike || "").toLowerCase();
+  if (platform.includes("mac")) return "macos";
+  if (platform.includes("win")) return "windows";
+  if (platform.includes("darwin")) return "macos";
+  return "linux";
+}
+
+export function classifyLocalShellType(
+  shellPath: string | undefined,
+  platformLike?: string,
+): LocalShellType {
+  const shellName = getExecutableBaseName(shellPath);
+  if (POWERSHELL_SHELLS.has(shellName)) return "powershell";
+  if (CMD_SHELLS.has(shellName)) return "cmd";
+  if (FISH_SHELLS.has(shellName)) return "fish";
+  if (POSIX_SHELLS.has(shellName)) return "posix";
+  if (WSL_SHELLS.has(shellName)) return "posix";
+  if (!shellName) {
+    return detectLocalOs(platformLike) === "windows" ? "powershell" : "posix";
+  }
+  return "unknown";
+}