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| -rw-r--r-- | doc/development/frontend.md | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/doc/development/frontend.md b/doc/development/frontend.md index 4fb56444917..ece8f880542 100644 --- a/doc/development/frontend.md +++ b/doc/development/frontend.md @@ -238,13 +238,18 @@ For our currently-supported browsers, see our [requirements][requirements]. [scss-style-guide]: scss_styleguide.md [requirements]: ../install/requirements.md#supported-web-browsers -## Common Errors +## Gotchas -### Rspec (Capybara/Poltergeist) chokes on general JavaScript errors +### Phantom.JS (used by Teaspoon & Rspec) chokes, returning vague JavaScript errors If you see very generic JavaScript errors (e.g. `jQuery is undefined`) being thrown in tests, but can't reproduce them manually, you may have included `ES6`-style JavaScript in files that don't have the `.js.es6` file extension. Either use ES5-friendly JavaScript or rename the file you're -working in (`git mv <file>.js> <file.js.es6>`). +working in (`git mv <file.js> <file.js.es6>`). + +Similar errors will be thrown if you're using +any of the [array methods introduced in ES6](http://www.2ality.com/2014/05/es6-array-methods.html) +whether or not you've updated the file extension. + |