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stringz

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Readme

Stringz

A really small, zero-dependency, unicode-aware library for working with Strings in Node.js.

Javascript has a serious problem with unicode. Even ES6 can’t solve the problem entirely since some characters like the new colored emojis are three bytes instead of two bytes. Sometimes even more! "👍🏽".length returns 4 which is totally wrong (hint: it should be 1!). ES6's Array.from tried to solve this, but that even fails: Array.from("👍🏽") returns ["👍", "🏽"] which is incorrect. This library tries to tackle all these problems with a mega RegExp. Read More Here.

Features

Limit string to width (truncate/pad)
Unicode-aware string length
Unicode-aware substring

🔥 Please note that this library is built for accuracy, not performance. It uses complex regular expressions to calculate the string length and perform other operations which are not particularly super-jawdropping-fast like the native String.prototype.length.

Install

$ npm install stringz --save

And import it in your awesome node app:

// ES2015+
import * as stringz from 'stringz'; // OR:
import { limit, substring, length } from 'stringz';

// CommonJS
var stringz = require('stringz');
// use like: stringz.limit ...

Usage

Limit String to Width

function limit(str[, limit[, padStr[, padPosition]]])

Param	Type	Default	Description
str	`String`	none	The string to be limited
limit	`Number`	`16`	Desired string length
padStr	`String`	`"#"`	Character to pad the output with
padPosition	`String`	`"right"`	Pad position: `"right"` or `"left"`

Examples

// Truncate:
limit("Life’s like a box of chocolates.", 20); // "Life's like a box of"

// Pad:
limit("Make emojis great again", 26, "💩"); // "Make emojis great again💩💩💩"
limit("What are you looking at?", 30, "+", "left"); // "++++++What are you looking at?"

// Unicode Aware:
limit("🤔🤔🤔", 2); // "🤔🤔"
limit("👍🏽👍🏽", 4, "👍🏽"); // "👍🏽👍🏽👍🏽👍🏽"

String Length

function length(str)

Param	Type	Default	Description
str	`String`	none	String to return the length for

Examples

length("Iñtërnâtiônàlizætiøn☃💩"); // 22

Substring

function substring(str, start[, end])

Param	Type	Default	Description
str	`String`	none	String to be devided
start	`Number`	none	Start position
end	`Number`	End of string	End position

Examples

substring("Emojis 👍🏽 are 🍆 poison. 🌮s are bad.", 7, 14); // "👍🏽 are 🍆"

Test

$ npm test

Changelog

Version	Date	Notes
0.1.0	2016-07-29	Renamed to Stringz, more tools
0.0.10	2016-07-29	Fixed substring issue
0.0.9	2016-07-28	Fixed unicode string length issue
0.0.8	2016-07-26	First usable release

License

This software is released under the MIT License.

Copyright © 2016 Sallar Kaboli <sallar.kaboli@gmail.com>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the “Software”), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.