Today I Learned
We can remove the logs using the clean command:
bash
biome clean
References:
Expo has different behavior on how it loads env variables on dev server, EAS Build, and EAS Updates
ts
import * as React from 'react'; type SomeComponentProps = { description: React.ReactNode; } const ComponentProps = ({ description }: SomeComponentProps) => { if (React.isValidElement(description)) { return description; } return (<Paragraph>{description}</Paragraph>); }
References: https://react.dev/reference/react/isValidElement
TypeScript: Function Overloads
specify a function that can be called in different ways and multiple return type
November 15, 2023
We can define multiple function declarations to define different signatures (parameters/return types) and TypeScript will infer the right signature based on call arguments.
Some gotchas:
- Implementation should narrow types based on overload
- Order matters: put most specific overloads first
Use Cases:
- Reusable functions with different types
- Library functions mimicking overloads
- Gradual typing - multiple signatures
Example:
ts
// Overloads function getString(opts: { fallback: string }): string; function getString(opts: {}): string | undefined; // Implementation function getString(opts: {}): string | undefined { // ... } // Usage const str1 = getString({ fallback: 'hello' }); // string const str2 = getString({}); // string | undefined
References: TypeScript Handbook
There's a way to easily clean up pnpm store, especially for unreferenced packages.
bash
pnpm store prune
References: https://pnpm.io/cli/store#prune
I used to manually define how to resolve import through vite config resolve
even though I already define path mapping in tsconfig.json
. By using this plugin, it will read the tsconfig path mapping.
References: https://www.npmjs.com/package/vite-tsconfig-paths
I was looking for how to improve my vite react project by showing type-check or lint error like CRA's error overlay. Then I found a plugin called vite-plugin-checker. The configuration is pretty straightforward.
References: https://vite-plugin-checker.netlify.app/
Zod refine or superRefine check
refine and superRefine check run after there's no invalid type error anymore in the base schema.
July 28, 2023
I sometimes got stuck when doing validations through refine
or superRefine
. Turns out refine
and superRefine
checking is run after there's no more invalid type error on the base schema. It's kinda expected but idk why is this not documented well.
[Android OS] FlutterShark able to detect and list down which app being installed in device are built using flutter. It will give these informations:
- Flutter SDK version
- Dart SDK version
- Packages being used
JavaScript has built-in function called sctructuredClone which able to deep clone objects.
References: https://www.builder.io/blog/structured-clone
One of the quirks that remain apparent in apps built using flutter is when you scroll inside the app using two fingers. It will scrolls twice as fast.
References: https://github.com/flutter/flutter/issues/11884
Try to take screenshot inside the app when opening a long vertical pages (list pages etc). If there are no scroll option when taking the screenshot, highly possible its built using flutter.