From a0ae976555e7e822766ff9d3bfb9050ff0de3ba0 Mon Sep 17 00:00:00 2001
From: Henrik Lissner <henrik@lissner.net>
Date: Tue, 4 Apr 2017 03:36:21 -0400
Subject: [PATCH] lang/javascript: more intelligent JSX detection

---
 modules/lang/javascript/config.el | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/modules/lang/javascript/config.el b/modules/lang/javascript/config.el
index 1ed285932..d48156bc0 100644
--- a/modules/lang/javascript/config.el
+++ b/modules/lang/javascript/config.el
@@ -104,6 +104,18 @@
   :commands rjsx-mode
   :mode "\\.jsx$"
   :mode "components/.+\\.js$"
+  :init
+  ;; auto-detect JSX file
+  (push (cons (lambda ()
+                (and (equal (file-name-extension buffer-file-name) "js")
+                     (re-search-forward "\\(^\\s-*import React\\|\\( from \\|require(\\)[\"']react\\)"
+                                        magic-mode-regexp-match-limit t)
+                     (progn
+                       (goto-char (match-beginning 1))
+                       (not (sp-point-in-string-or-comment)))))
+              'rjsx-mode)
+        magic-mode-alist)
+
   :config
   ;; disable electric keys (I use snippets and `emmet-mode' instead)
   (define-key rjsx-mode-map "<" nil)