feat: Add support for mocking fs

src/util/errors/SystemError.ts

@@ -0,0 +1,44 @@
+/**
+ * Interface for Node.js System errors
+ *
+ * Node.js generates system errors when exceptions occur within its runtime environment.
+ * These usually occur when an application violates an operating system constraint.
+ * For example, a system error will occur if an application attempts to read a file that does not exist.
+ */
+export interface SystemError extends Error {
+  /**
+   * If present, the address to which a network connection failed.
+   */
+  address?: string;
+  /**
+   * The string error code.
+   * Full list: https://man7.org/linux/man-pages/man3/errno.3.html
+   */
+  code: string;
+  /**
+   * If present, the file path destination when reporting a file system error.
+   */
+  dest?: string;
+  /**
+   * The system-provided error number.
+   */
+  errno: number | string;
+  /**
+   * If present, extra details about the error condition.
+   */
+  info?: any;
+  /**
+   * If present, the file path when reporting a file system error.
+   */
+  path?: string;
+  /**
+   * If present, the network connection port that is not available.
+   */
+  port?: string;
+  /**
+   * The name of the system call that triggered the error.
+   */
+  syscall: string;
+}
+
+export const isSystemError = (error: any): error is SystemError => error.code && error.syscall;