update

ts/smartupdate.errors.ts

@@ -0,0 +1,65 @@
+/**
+ * Base error class for smartupdate errors
+ */
+export class SmartUpdateError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = 'SmartUpdateError';
+    // Maintains proper stack trace for where our error was thrown (only available on V8)
+    if (Error.captureStackTrace) {
+      Error.captureStackTrace(this, this.constructor);
+    }
+  }
+}
+
+/**
+ * Error thrown when the npm registry is unavailable
+ */
+export class RegistryUnavailableError extends SmartUpdateError {
+  constructor(message: string = 'Failed to retrieve package information from npm registry') {
+    super(message);
+    this.name = 'RegistryUnavailableError';
+  }
+}
+
+/**
+ * Error thrown when a package is not found in the registry
+ */
+export class PackageNotFoundError extends SmartUpdateError {
+  public readonly packageName: string;
+
+  constructor(packageName: string) {
+    super(`Package '${packageName}' not found in npm registry`);
+    this.name = 'PackageNotFoundError';
+    this.packageName = packageName;
+  }
+}
+
+/**
+ * Error thrown when a version string is invalid
+ */
+export class InvalidVersionError extends SmartUpdateError {
+  public readonly version: string;
+
+  constructor(version: string, reason?: string) {
+    const message = reason
+      ? `Invalid version string '${version}': ${reason}`
+      : `Invalid version string '${version}'`;
+    super(message);
+    this.name = 'InvalidVersionError';
+    this.version = version;
+  }
+}
+
+/**
+ * Error thrown when package name validation fails
+ */
+export class InvalidPackageNameError extends SmartUpdateError {
+  public readonly packageName: string;
+
+  constructor(packageName: string) {
+    super(`Invalid package name '${packageName}'. Package names must follow npm naming conventions.`);
+    this.name = 'InvalidPackageNameError';
+    this.packageName = packageName;
+  }
+}