Properly export all error classes from form-data-parser

Author: mjackson

packages/form-data-parser/CHANGELOG.md

@@ -2,6 +2,11 @@
 
 This is the changelog for [`form-data-parser`](https://github.com/mjackson/remix-the-web/tree/main/packages/form-data-parser). It follows [semantic versioning](https://semver.org/).
 
+## HEAD
+
+- Export `FormDataParserError` and `MaxFilesExceededError`
+- Re-export `MultipartParseError`, `MaxHeaderSizeExceededError`, and `MaxFileSizeExceededError` from multipart parser
+
 ## v0.9.0 (2025-06-13)
 
 This release updates to `multipart-parser` 0.10.0 and removes the restrictions on checking the `size` and/or `slice`ing `FileUpload` objects.

packages/form-data-parser/examples/node/server.js

@@ -2,9 +2,13 @@ import * as fsp from 'node:fs/promises';
 import * as http from 'node:http';
 import * as os from 'node:os';
 import * as path from 'node:path';
+
 import { LocalFileStorage } from '@mjackson/file-storage/local';
-import { parseFormData } from '@mjackson/form-data-parser';
-import { MultipartParseError, MaxFileSizeExceededError } from '@mjackson/multipart-parser';
+import {
+  MultipartParseError,
+  MaxFileSizeExceededError,
+  parseFormData,
+} from '@mjackson/form-data-parser';
 import { createRequestListener } from '@mjackson/node-fetch-server';
 
 const PORT = 3000;

packages/form-data-parser/src/form-data-parser.ts

@@ -1 +1,14 @@
-export { FileUpload, type FileUploadHandler, parseFormData } from './lib/form-data.ts';
+export type { FileUploadHandler } from './lib/form-data.ts';
+export {
+  FormDataParseError,
+  MaxFilesExceededError,
+  FileUpload,
+  parseFormData,
+} from './lib/form-data.ts';
+
+// Re-export errors that may be thrown by the parser.
+export {
+  MultipartParseError,
+  MaxHeaderSizeExceededError,
+  MaxFileSizeExceededError,
+} from '@mjackson/multipart-parser';

packages/form-data-parser/src/lib/form-data.ts

@@ -5,13 +5,19 @@ import {
   MultipartPart,
 } from '@mjackson/multipart-parser';
 
+/**
+ * The base class for errors thrown by the form data parser.
+ */
 export class FormDataParseError extends Error {
   constructor(message: string) {
     super(message);
     this.name = 'FormDataParseError';
   }
 }
 
+/**
+ * An error thrown when the maximum number of files allowed in a request is exceeded.
+ */
 export class MaxFilesExceededError extends FormDataParseError {
   constructor(maxFiles: number) {
     super(`Maximum number of files exceeded: ${maxFiles}`);