common-filters

Library with common filters

Note: This module works in browsers and Node.js >= 4.0

Installation

npm install common-filters

Usage

const filters = require('common-filters');

filters.toString(['a', 'b', 'c']); //'abc'

filters.round('0.105', -2); //0.11

API

Filters.add

Use this methods for adding custom filters in simple format.

Filters.add('trim', trim);
//or
Filters.add({
  toLowerCase: toLowerCase,
  toUpperCase: toUpperCase
});

Also you can use Object.assign(commonFilters, customFilters) in other situations

Filters.filterName(value, [arg], [options])

• value (Any) - Filtered value

• arg (Any) - Value for comparison. Can not be an object or undefined. User can set it as options.arg. If you use 'arg' in your filter you must be sure that user will specify this value

• options (Object) - Options

  • arg (Any) - Will be set if arg is specified
  • (Any) - Any custom options

• (Any) - Any custom arguments

• return (Any) - Filtered value

Filters:

Types

• toObject - convert value to object

• toArray - convert value to array

• castArray - wrap value to array if it's not one

• toNumber - convert value to number

• toFinite - convert value to finite number

• toInteger - convert value to integer

• toString - convert value to string

• toDate - convert value to date

• toBoolean - convert value to boolean

• toUndefined - convert value to undefined

Numbers (other types are not filtered)

• round - round number

  • arg (Number or String) - precision

• range - return default value if no number or number is not in range

  • from (Number) - left boarder of range
  • to (Number) - right boarder of range
  • default (Any) - default value

Strings (other types are not filtered)

• trim - trim value

• prefix - add prefix to value

  • arg (String) - prefix

• postfix - add postfix to value

  • arg (String) - postfix

• shorten - shorten string by specific length and change end to '...'

  • arg (String) - length

• toLowerCase - convert value to lower case

• toUpperCase - convert value to upper case

• toCamelCase - convert common strings, dashes-strings or shakes_strings to camelCaseStrings

• replace - replace by pattern

  • pattern (RegExp or String) - RegExp
  • replacement (String) - replacement

• split - split string by separator to array

  • arg (String) - separator

• reverse - reverse string

• slice - get substring

  • begin (Number) - start index
  • end (Number) - end index

Array (other types are not filtered)

• join - join string by separator to string

  • arg (String) - separator

• reverse - reverse array

• slice - get sub array

  • begin (Number) - start index
  • end (Number) - end index

Tests

npm install
npm test

License

MIT