From cf2d0b553fa61b5a280fc59ad43538e4cccaa6e3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sybren=20A=2E=20St=C3=BCvel?= <sybren@blender.org>
Date: Wed, 13 Jul 2022 18:49:35 +0200
Subject: [PATCH] Manager: fix mime type for JavaScript files

Go on Windows doesn't know `.js` files should be served with
`application/javascript` mime type, and thus uses the generic `text/plain`
type.
---
 web/web_app.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/web/web_app.go b/web/web_app.go
index 57af3dfa..3cc4dc75 100644
--- a/web/web_app.go
+++ b/web/web_app.go
@@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"io/fs"
+	"mime"
 	"net/http"
 
 	"github.com/rs/zerolog/log"
@@ -27,6 +28,12 @@ func WebAppHandler() (http.Handler, error) {
 	// found.
 	wrappedFS := WrapFS(fs, "index.html")
 
+	// Windows doesn't know this mime type. Web browsers won't load the webapp JS
+	// file when it's served as text/plain.
+	if err := mime.AddExtensionType(".js", "application/javascript"); err != nil {
+		return nil, fmt.Errorf("registering mime type for JavaScript files: %w", err)
+	}
+
 	return http.FileServer(http.FS(wrappedFS)), nil
 }