Move safe-chain package to packages/safe-chain

packages/safe-chain/src/shell-integration/shellDetection.js

@@ -0,0 +1,26 @@
+import zsh from "./supported-shells/zsh.js";
+import bash from "./supported-shells/bash.js";
+import powershell from "./supported-shells/powershell.js";
+import windowsPowershell from "./supported-shells/windowsPowershell.js";
+import fish from "./supported-shells/fish.js";
+import { ui } from "../environment/userInteraction.js";
+
+export function detectShells() {
+  let possibleShells = [zsh, bash, powershell, windowsPowershell, fish];
+  let availableShells = [];
+
+  try {
+    for (const shell of possibleShells) {
+      if (shell.isInstalled()) {
+        availableShells.push(shell);
+      }
+    }
+  } catch (error) {
+    ui.writeError(
+      `We were not able to detect which shells are installed on your system. Please check your shell configuration. Error: ${error.message}`
+    );
+    return [];
+  }
+
+  return availableShells;
+}