trimTrailingSlash

Kind: Function

Source: src/middleware/trailing-slash/index.ts

Part of: Middleware

Trailing Slash Middleware for Hono.

trimTrailingSlash creates Hono middleware that redirects requests whose path ends with a trailing slash to the equivalent path without it. It keeps route URLs consistent before the request continues through the application middleware and route handlers.

Signature

ts
function trimTrailingSlash(options: TrimTrailingSlashOptions): MiddlewareHandler

Parameters

Returns: MiddlewareHandler

Diagram

mermaid
graph LR
  Request[Incoming request] --> Middleware[trimTrailingSlash middleware]
  Middleware --> Check{Path has trailing slash?}
  Check -->|Yes| Redirect[Redirect to trimmed path]
  Check -->|No| Next[Continue to next middleware or route]

Usage

ts
import { Hono } from 'hono'
import { trimTrailingSlash } from 'hono/trailing-slash'

const app = new Hono()

app.use(trimTrailingSlash())

app.get('/users', (c) => {
  return c.text('User list')
})

export default app

AI Coding Instructions

• Register trimTrailingSlash() before routes that should use normalized paths.
• Import the middleware from hono/trailing-slash.
• Keep route definitions without trailing slashes when this middleware is enabled.
• Do not add separate trailing-slash route variants unless they require different behavior.