1.0.0-beta • Published 4 years ago
transform-class-properties v1.0.0-beta
transform-class-properties
Automatically transforms values of class properties.
Prerequisites
TypeScript >= 1.5
Enable the experimentalDecorators in
tsconfig.json.
Note: ES5 is min target minimun to build.
Installation
npm install transform-class-properties --saveor
yarn add transform-class-propertiesUsage
import {
Float,
RemoveNonNumeric,
ToUpperCase,
transform,
Trim
} from 'transform-class-properties';
class Book {
@ToUpperCase()
@Trim()
public title: string;
@Float(2)
public price: number;
@RemoveNonNumeric()
public issn: string;
}
const book1 = new Book();
book1.title = ' My first book ';
book1.price = 12.3210;
book1.issn = '1234-5679'
console.log(transform(book1)); // Book { title: 'MY FIRST BOOK', price: 12.32, issn: '12345679' }Decorators
| Decorator | Description | Class property type |
|---|---|---|
| @Append(additionalValue: string | number) | Adds value at the end. | string |
| @Capitalize() | Capitalize the first letter and lowercase the rest. | string |
| @Float(fractionDigits?: number) | Converts number to float. | number |
| @Integer() | Converts number to integer. | number |
| @Prepend(additionalValue: string | number) | Adds value at the beginning. | string |
| @Regex(expression: RegExp) | Returns matched value with regular expression. | string |
| @RemoveNonNumeric() | Removes anything non-numeric character. | string |
| @RemoveNumeric() | Removes numeric characters. | string |
| @Replace(searchValue: string | RegExp, replaceValue: string) | Find and replace value. | string |
| @ToLowerCase() | Lower case characters. | string |
| @ToUpperCase() | Upper case characters. | string |
| @Trim() | Trim characters. | string |