fix: converts root parameters with URL object type to a path. (#365)

index.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const path = require('path')
+const url = require('url')
 const statSync = require('fs').statSync
 const { PassThrough } = require('readable-stream')
 const glob = require('glob')
@@ -14,6 +15,7 @@ const encodingNegotiator = require('@fastify/accept-negotiator')
 const dirList = require('./lib/dirList')
 
 async function fastifyStatic (fastify, opts) {
+  opts.root = normalizeRoot(opts.root)
   checkRootPathForErrors(fastify, opts.root)
 
   const setHeaders = opts.setHeaders
@@ -394,6 +396,29 @@ async function fastifyStatic (fastify, opts) {
     pumpSendToReply(req, reply, file, rootPath)
   }
 }
+function normalizeRoot (root) {
+  if (root === undefined) {
+    return root
+  }
+  if (root instanceof URL && root.protocol === 'file:') {
+    return url.fileURLToPath(root)
+  }
+  if (Array.isArray(root)) {
+    const result = []
+    for (let i = 0, il = root.length; i < il; ++i) {
+      if (root[i] instanceof URL && root[i].protocol === 'file:') {
+        result.push(url.fileURLToPath(root[i]))
+      } else {
+        result.push(root[i])
+      }
+    }
+
+    return result
+  }
+
+  return root
+}
+
 function checkRootPathForErrors (fastify, rootPath) {
   if (rootPath === undefined) {
     throw new Error('"root" option is required')

test/static.test.js

@@ -3756,3 +3756,50 @@ t.test(
     t.end()
   }
 )
+t.test(
+  'converts URL to path',
+  async (t) => {
+    t.plan(2 + GENERIC_RESPONSE_CHECK_COUNT)
+    const pluginOptions = {
+      root: url.pathToFileURL(path.join(__dirname, '/static'))
+    }
+
+    const fastify = Fastify()
+
+    fastify.register(fastifyStatic, pluginOptions)
+    const response = await fastify.inject({
+      method: 'GET',
+      url: 'foobar.html',
+      headers: {
+        'accept-encoding': '*, *'
+      }
+    })
+    genericResponseChecks(t, response)
+    t.equal(response.statusCode, 200)
+    t.same(response.body, foobarContent)
+  }
+)
+
+t.test(
+  'converts array of URLs to path, contains string path',
+  async (t) => {
+    t.plan(2 + GENERIC_RESPONSE_CHECK_COUNT)
+    const pluginOptions = {
+      root: [url.pathToFileURL(path.join(__dirname, '/static')), path.join(__dirname, 'static-dotfiles'), url.pathToFileURL(path.join(__dirname, '/static-pre-compressed'))]
+    }
+
+    const fastify = Fastify()
+
+    fastify.register(fastifyStatic, pluginOptions)
+    const response = await fastify.inject({
+      method: 'GET',
+      url: 'foobar.html',
+      headers: {
+        'accept-encoding': '*, *'
+      }
+    })
+    genericResponseChecks(t, response)
+    t.equal(response.statusCode, 200)
+    t.same(response.body, foobarContent)
+  }
+)