58f8093689
- Updated all component headers and documentation
- Changed navbar and footer branding
- Updated homepage hero badge
- Modified page title in index.html
- Simplified footer text to 'Built with ❤️'
- Consistent V2 capitalization across all references
22 lines
1.0 KiB
TypeScript
22 lines
1.0 KiB
TypeScript
/**
|
|
* `invariant` is used to [assert](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html#assertion-functions) that the `condition` is [truthy](https://github.com/getify/You-Dont-Know-JS/blob/bdbe570600d4e1107d0b131787903ca1c9ec8140/up%20%26%20going/ch2.md#truthy--falsy).
|
|
*
|
|
* 💥 `invariant` will `throw` an `Error` if the `condition` is [falsey](https://github.com/getify/You-Dont-Know-JS/blob/bdbe570600d4e1107d0b131787903ca1c9ec8140/up%20%26%20going/ch2.md#truthy--falsy)
|
|
*
|
|
* 🤏 `message`s are not displayed in production environments to help keep bundles small
|
|
*
|
|
* @example
|
|
*
|
|
* ```ts
|
|
* const value: Person | null = { name: 'Alex' };
|
|
* invariant(value, 'Expected value to be a person');
|
|
* // type of `value`` has been narrowed to `Person`
|
|
* ```
|
|
*/
|
|
export default function invariant(condition: any,
|
|
/**
|
|
* Can provide a string, or a function that returns a string for cases where
|
|
* the message takes a fair amount of effort to compute
|
|
*/
|
|
message?: string | (() => string)): asserts condition;
|