Refactor to customize shell integration per shell

src/shell-integration/supported-shells/windowsPowershell.js

@@ -0,0 +1,45 @@
+import {
+  addLineToFile,
+  doesExecutableExistOnSystem,
+  execAndGetOutput,
+  removeLinesMatchingPattern,
+} from "../helpers.js";
+
+const shellName = "Windows PowerShell";
+const executableName = "powershell";
+const startupFileCommand = "echo $PROFILE";
+
+function isInstalled() {
+  return doesExecutableExistOnSystem(executableName);
+}
+
+function teardown() {
+  const startupFile = execAndGetOutput(startupFileCommand, executableName);
+
+  // Removes all aliases starting with "Set-Alias npm=", "Set-Alias npx=", or "Set-Alias yarn="
+  // This will remove the safe-chain aliases for npm, npx, and yarn commands.
+  removeLinesMatchingPattern(startupFile, /^Set-Alias\s+(npm|npx|yarn)\s+/);
+
+  return true;
+}
+
+function setup(tools) {
+  const startupFile = execAndGetOutput(startupFileCommand, executableName);
+  teardown();
+
+  for (const { tool, aikidoCommand } of tools) {
+    addLineToFile(
+      startupFile,
+      `Set-Alias ${tool} ${aikidoCommand} # Safe-chain alias for ${tool}`
+    );
+  }
+
+  return true;
+}
+
+export default {
+  name: shellName,
+  isInstalled,
+  setup,
+  teardown,
+};