# Is connect-history-api-fallback ESM-only? Can you require() it?

> connect-history-api-fallback@2.0.0 is a CommonJS package. CommonJS — require() works on every Node.js version we test.

Provides a fallback for non-existing directories so that the HTML 5 history API can be used.

Last verified Sep 9, 2026 against connect-history-api-fallback@2.0.0.

connect-history-api-fallback ships CommonJS only. require("connect-history-api-fallback") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.8. import "connect-history-api-fallback" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

## What to do

1. require("connect-history-api-fallback") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.8.
2. From ES modules use the default import: import connectHistoryApiFallback from "connect-history-api-fallback"; then destructure. Named imports only work when Node.js can statically detect the exports.
3. TypeScript: npm install -D @types/connect-history-api-fallback

## Facts

- Latest: 2.0.0 (Jun 27, 2022)
- Module format: CommonJS
- Last CommonJS version: 2.0.0
- TypeScript types: @types/connect-history-api-fallback
- Node engines: >=0.8
- Weekly downloads: 15.3M
- License: MIT

## Runtime test results for connect-history-api-fallback@2.0.0

Installed and executed on Sep 9, 2026 with require("connect-history-api-fallback") from a CommonJS file and import "connect-history-api-fallback" from an ES module.

| Runtime | require("connect-history-api-fallback") | import "connect-history-api-fallback" |
|---|---|---|
| Node.js 18 | works | works |
| Node.js 20 | works | works |
| Node.js 22 | works | works |
| Node.js 24 | works | works |
| Node.js 26 | works | works |
| Bun 1.4.0 | works | works |

## How to import connect-history-api-fallback

ES modules:

```js
import connectHistoryApiFallback from "connect-history-api-fallback";
```

CommonJS:

```js
const connectHistoryApiFallback = require("connect-history-api-fallback");
```

## Module format by version

Derived from the type, main and exports fields of every stable release on npm (13 versions; the newest 13 shown).

| Versions | Format | First published |
|---|---|---|
| 0.0.1 – 2.0.0 | CommonJS | May 18, 2013 |

## Frequently asked

**Is connect-history-api-fallback ESM-only?**

connect-history-api-fallback@2.0.0 is a CommonJS package. connect-history-api-fallback ships CommonJS only. require("connect-history-api-fallback") works on every Node.js version we test (18, 20, 22, 24 and 26) and in Bun. The package declares Node.js >=0.8. import "connect-history-api-fallback" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.

**Can I import connect-history-api-fallback with ES module syntax?**

Yes. import connectHistoryApiFallback from "connect-history-api-fallback" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.

**Does connect-history-api-fallback work in Bun?**

Yes. import "connect-history-api-fallback" loaded successfully in Bun 1.4.0 on Sep 9, 2026.

**Does connect-history-api-fallback ship TypeScript types?**

Not bundled. Install the community types with "npm install -D @types/connect-history-api-fallback".

## Links

- [connect-history-api-fallback on npm](https://www.npmjs.com/package/connect-history-api-fallback)
- [Source repository](https://github.com/bripkens/connect-history-api-fallback)
- [HTML version](https://canirequire.com/package/connect-history-api-fallback/)
- [JSON version](https://canirequire.com/package/connect-history-api-fallback.json)

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