ReactJS Unexpected Token ) on Safari only

Question

I'm getting an SyntaxError: Unexpected token ")" on Safari only - this code works on every other browser.

I'm using gulp to compile my files as follows:

browserify(componentPath + "app.jsx")
    .transform(reactify)
    .transform(babelify)
    .bundle()
    .pipe(source('app.js'))
    .pipe(gulp.dest(buildPath));

The syntax error is highlighting the following:

return React.createElement(If, {
     condition: !_.isEmpty(title)
 }, React.createElement("div", {
     className: "row wrapper border-bottom white-bg page-heading"
 }, React.createElement("div", {
     className: "col-lg-9"
 }, React.createElement("h2", null, title || 'Untitled'), React.createElement("ol", {
     className: "breadcrumb"
 }, React.createElement("li", null, React.createElement("a", {
     onClick: () => self.history.pushState(null, home)
 }, "Home")), links.map(function(link, index) {
     var url = link.url;

     return React.createElement("li", {
         onClick: () => self.history.pushState(null, url),
         key: url,
         className: "ptr-click"
     }, index == links.length - 1 ? React.createElement("strong", null, link.title || 'Untitled') : link.title);
 })))));

I commented the whole section out, just to see if it is this particular block of code, but then the error referred to another block of exactly the same React.createElement.

Answer 1

Taking mattclemens comment into consideration, Safari currently does not execute arrow functions. So I updated my gulp script to:

browserify(componentPath + "app.jsx")
    .transform(reactify)
    .transform(babelify, {presets: ["es2015", "react"]})
    .bundle()
    .pipe(source('app.js'))
    .pipe(gulp.dest(buildPath));

Of course, don't forget to install the presets:

npm install babel-preset-es2015 babel-preset-react

This worked perfectly, and now my code runs on Safari as well :)