https://github.com/paveldymkov/logical-not

https://github.com/paveldymkov/logical-not

Last synced: about 1 month ago
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• Host: GitHub
• URL: https://github.com/paveldymkov/logical-not
• Owner: PavelDymkov
• License: mit
• Created: 2019-02-18T01:20:11.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2021-08-26T08:05:34.000Z (over 3 years ago)
• Last Synced: 2024-04-26T18:46:00.226Z (9 months ago)
• Language: JavaScript
• Size: 5.86 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Logical NOT Function

The **not** function is an alphabetic analogue of the unary operator **!**.

It is used to increase the readability of the code.

Usage:

```js

import not from "logical-not";

// or import { not } from "logical-not";

if (not("foo".includes("bar"))) {

    console.log("baz");

}

```

### Typescript support

```ts

function main(): void {

    const div = document.querySelector("div");

    const span = document.querySelector("span"); 

    

    // now div is HTMLDivElement | null

    // span is HTMLSpanElement | null

    if (not(div)) return;

    // now div is HTMLDivElement

    div.textContent;

    

    // need to use optional chaining

    span?.textContent;

}

```

## License

MIT License (see `LICENSE` file).