(js--continued-expression-p): Special-case unary plus and minus

* lisp/progmodes/js.el (js--continued-expression-p): Make an
effort to recognize unary plus and minus, in the contexts where
they make sense (https://github.com/mooz/js2-mode/issues/322).

1 files changed, 6 insertions, 0 deletions

diff --git a/test/indent/js.js b/test/indent/js.js
index d843f615fd8..61c7b440ea3 100644
--- a/test/indent/js.js
+++ b/test/indent/js.js
@@ -95,6 +95,12 @@ Foobar
     console.log(num);
   });
 
+var arr = [
+  -1, 2,
+  -3, 4 +
+    -5
+];
+
 // Local Variables:
 // indent-tabs-mode: nil
 // js-indent-level: 2