Little Tips and Mistakes I've Learned Using TypeScript
Bridget Amana
Posted on August 5, 2024
Yay!!! This short write-up made it to your feed. Here are a few tips I've picked up while using TypeScript.
1. Type Safety
One of the best things about TypeScript is type safety. It helps you catch errors early, saving you from those pesky bugs that love to pop up unexpectedly. But here's a tip: Avoid ignoring type errors. If TypeScript flags something, it's for a reason. Once you see that red line, fix it because it will be there waiting for you in production. You'll thank yourself later!
2. The any
Trap
TypeScript offers a type called any
, which might seem like a convenient escape hatch. But be careful—using any
too much is like switching off TypeScript's safety features. You might as well stick to JavaScript if you keep using any
. It's tempting to use any
when you're in a hurry, but it's better to specify the exact type or use unknown
if you're not sure. This way, you keep your code safe and sound.
3. Beware of the Boxed Objects
TypeScript has two sets of types for things like numbers, strings, and booleans: the primitive types (number
, string
, boolean
) and their object counterparts (Number
, String
, Boolean
). Here's a simple rule: Always use the lowercase versions. The uppercase versions are rarely needed and can cause unexpected behavior. So, stick with string
instead of String
—it's simpler and safer.
And there you have it—just a few tips I've learned along the way. These pointers can help you write cleaner, more reliable code. Happy coding!
Posted on August 5, 2024
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