Do not break before + (#1777)

We really want to parse those as binary expressions but it's not going to be trivial. A quick fix that should help is to not break before those.

src/printer.js

@@ -2648,7 +2648,14 @@ function genericPrintNoParens(path, options, print, args) {
           n.groups[i + 1].raws &&
           n.groups[i + 1].raws.before !== ""
         ) {
-          parts.push(line);
+          if (
+            n.groups[i + 1].type === "value-operator" &&
+            ["+", "-", "/", "*", "%"].indexOf(n.groups[i + 1].value) !== -1
+          ) {
+            parts.push(" ");
+          } else {
+            parts.push(line);
+          }
         }
       }
 

tests/css_indent/__snapshots__/jsfmt.spec.js.snap

@@ -4,6 +4,7 @@ exports[`indent.css 1`] = `
 div {
   background: var(fig-light-02) url(/images/inset-shadow-east-ltr.png) 100% 0 repeat-y;
   box-shadow: 0 0 1px 2px rgba(88, 144, 255, 0.75), 0 1px 1px rgba(0, 0, 0, 0.15);
+  padding-bottom: calc(var(ads-help-tray-footer-with-support-link-height) + var(ads-help-tray-header-height-new));
 }
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 div {
@@ -14,6 +15,10 @@ div {
     repeat-y;
   box-shadow: 0 0 1px 2px rgba(88, 144, 255, 0.75),
     0 1px 1px rgba(0, 0, 0, 0.15);
+  padding-bottom: calc(
+    var(ads-help-tray-footer-with-support-link-height) +
+      var(ads-help-tray-header-height-new)
+  );
 }
 
 `;

tests/css_indent/indent.css

@@ -1,4 +1,5 @@
 div {
   background: var(fig-light-02) url(/images/inset-shadow-east-ltr.png) 100% 0 repeat-y;
   box-shadow: 0 0 1px 2px rgba(88, 144, 255, 0.75), 0 1px 1px rgba(0, 0, 0, 0.15);
+  padding-bottom: calc(var(ads-help-tray-footer-with-support-link-height) + var(ads-help-tray-header-height-new));
 }