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hono/deno_dist/adapter/deno/serve-static.ts

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import type { Context } from '../../context.ts'
import type { Next } from '../../types.ts'
import { getFilePath } from '../../utils/filepath.ts'
import { getMimeType } from '../../utils/mime.ts'
export type ServeStaticOptions = {
root?: string
path?: string
rewriteRequestPath?: (path: string) => string
}
const DEFAULT_DOCUMENT = 'index.html'
export const serveStatic = (options: ServeStaticOptions = { root: '' }) => {
return async (c: Context, next: Next) => {
// Do nothing if Response is already set
if (c.finalized) {
await next()
return
}
const url = new URL(c.req.url)
const filename = options.path ?? decodeURI(url.pathname)
let path = getFilePath({
filename: options.rewriteRequestPath ? options.rewriteRequestPath(filename) : filename,
root: options.root,
defaultDocument: DEFAULT_DOCUMENT,
})
path = `./${path}`
let content
try {
content = await Deno.readFile(path)
} catch (e) {
console.warn(`${e}`)
}
if (content) {
const mimeType = getMimeType(path)
if (mimeType) {
c.header('Content-Type', mimeType)
}
// Return Response object
return c.body(content)
} else {
console.warn(`Static file: ${path} is not found`)
await next()
}
return
}
}