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​​Avoiding those dang cannot read property of undefined errors

​​​​Uncaught TypeError: Cannot read property 'foo' of undefined.​ The dreaded error we all hit at some point in JavaScript development. Could be an empty state from an API that returns differently than you expected. Could be something else. We don’t know because the error itself is so general and broad.

​​I recently had an issue where certain environment variables weren't being pulled in for one reason or another, causing all sorts of funkiness with that error staring me … Read article

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