Fix mdserve crash on non-existing files

Author: elementbound

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@elementbound/mdview",
-  "version": "1.2.1",
+  "version": "1.2.2",
   "description": "View markdown files from your terminal!",
   "keywords": [
     "markdown",

src/routes/render.js

@@ -1,43 +1,44 @@
-const fs = require('fs')
-const fsp = fs.promises
-const path = require('path')
-const express = require('express')
-
-const config = require('../config')
-const transformMarkdown = require('../transforms/markdown')
-const processImages = require('../postprocess/image')
-
-const router = express.Router()
-
-router.get('/*', async (req, res) => {
-  const file = req.path
-  const basedir = path.dirname(file)
-  console.log('Rendering', file)
-
-  if (!fs.existsSync(file)) {
-    res.status(404)
-      .send(`File doesn't exist: ${file}`)
-  }
-
-  const data = await fsp.readFile(file, 'utf-8')
-  const extension = path.extname(file)
-
-  if (config.extensions.includes(extension)) {
-    let html = transformMarkdown(data)
-
-    html = config.renderImages
-      ? await processImages(html, basedir)
-      : html
-
-    res.status(200)
-      .send(html)
-  } else {
-    console.log(`Unknown extension ${extension}, passing through`)
-
-    res.status(200)
-      .contentType('text/plain')
-      .send(`${data}`)
-  }
-})
-
-module.exports = router
+const fs = require('fs')
+const fsp = fs.promises
+const path = require('path')
+const express = require('express')
+
+const config = require('../config')
+const transformMarkdown = require('../transforms/markdown')
+const processImages = require('../postprocess/image')
+
+const router = express.Router()
+
+router.get('/*', async (req, res) => {
+  const file = req.path
+  const basedir = path.dirname(file)
+  console.log('Rendering', file)
+
+  if (!fs.existsSync(file)) {
+    res.status(404)
+      .send(`File doesn't exist: ${file}`)
+    return
+  }
+
+  const data = await fsp.readFile(file, 'utf-8')
+  const extension = path.extname(file)
+
+  if (config.extensions.includes(extension)) {
+    let html = transformMarkdown(data)
+
+    html = config.renderImages
+      ? await processImages(html, basedir)
+      : html
+
+    res.status(200)
+      .send(html)
+  } else {
+    console.log(`Unknown extension ${extension}, passing through`)
+
+    res.status(200)
+      .contentType('text/plain')
+      .send(`${data}`)
+  }
+})
+
+module.exports = router