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 --save

or

yarn add transform-class-properties

Usage

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 |

License

MIT