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πŸƒβ€β™‚οΈ Fast and simple Map and RegExp based HTML entities encoder.🍁

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Encode Entities


πŸƒβ€β™‚οΈ Fast and simple Map and RegExp based HTML entities encoder. 🍁



πŸ“ƒ Table of Contents



πŸ€– Features

  • ⚑ Instant HTML encoding for special characters
  • πŸ›  Add your own custom encoding rules
  • β™» Reset back to default rules anytime
  • ✏️ Update individual rules on the fly
  • ❌ Remove unwanted rules easily
  • πŸ“Š See exactly how many rules are active
  • πŸš€ Single‑pass, high‑performance replacement engine (powered by @igorskyflyer/mapped-replacer)

πŸ›‘ SECURITY

Encoding of special characters into HTML entities helps mitigate XSS risks in the textual layer by ensuring user‑supplied content is treated as text, not executable code.

Note: not a full XSS solution, usage of other XSS-prevention techniques is still required.



πŸ•΅πŸΌ Usage

Install it by executing any of the following, depending on your preferred package manager:

pnpm add @igorskyflyer/encode-entities
yarn add @igorskyflyer/encode-entities
npm i @igorskyflyer/encode-entities


🀹🏼 API

πŸ’‘ TIP

Encoded by default: <, >, ", ', &, =, `, !, @, $, %, (, ), +, {, }, [, ].

You can however remove any of these rules and/or add your own.


resetRules(): void

Resets the rules to the default ones.

import { Encoder } from '@igorskyflyer/encode-entities'

const encoder: Encoder = new Encoder()

encoder.updateRule('πŸ˜€', '<')
encoder.updateRule('πŸ˜‚', '>')
encoder.resetRules()

console.log(encoder.encode('<strong>')) // outputs '&#60;strong&#62;'

addRule(key: string, value: string): boolean

Adds a new rule for entities encoding. Returns true if the rule was added successfully or false if not.

import { Encoder } from '@igorskyflyer/encode-entities'

const encoder: Encoder = new Encoder()
encoder.addRule('&#8594;', 'β†’')

console.log(encoder.encode('<a href="#">β†’</a>')) // outputs '&#60;a href&#61;&#34;#&#34;&#62;&#8594;&#60;/a&#62;'

updateRule(replaceWith: string, searchFor: string): boolean

Updates an existing rule for entity encoding. Returns true if the rule was updated successfully or false if not.

import { Encoder } from '@igorskyflyer/encode-entities'

const encoder: Encoder = new Encoder()
encoder.addRule('&#8592;', 'β†’')
encoder.updateRule('&#8594;', 'β†’')

console.log(encoder.encode('<a href="#">β†’</a>')) // outputs '&#60;a href&#61;&#34;#&#34;&#62;&#8594;&#60;/a&#62;'

addRules(rules: Object): boolean

Adds rules for entity encoding.
Passed object is a simple key-value object, i.e. { '<': '&#60;', '>': '&#62;' }
Returns true if the rules were added successfully or false if not.

import { Encoder } from '@igorskyflyer/encode-entities'

const encoder: Encoder = new Encoder()

encoder.addRules({
  '&#120139;':'𝕋'
  '&#8776;':'β‰ˆ'
  '&#120113;':'𝔱'
})

console.log(encoder.encode('<span>𝕋 β‰ˆ 𝔱</span>')) // outputs '&#60;span&#62;&#120139; &#8776; &#120113;&#60;/span&#62;'

removeRule(key: string): boolean

Removes the rule that matches the provided key. Returns true if the rule was removed successfully or false if not.

import { Encoder } from '@igorskyflyer/encode-entities'

const encoder: Encoder = new Encoder()

encoder.addRules({
  '&#120139;': '𝕋',
  '&#8776;': 'β‰ˆ',
  '&#120113;': '𝔱'
})
encoder.removeRule('β‰ˆ')

console.log(encoder.rulesCount()) // outputs 20

rulesCount(): number

Gets the number of rules for entity encoding.

import { Encoder } from '@igorskyflyer/encode-entities'

const encoder: Encoder = new Encoder()

encoder.addRules({
  '&#120139;': '𝕋',
  '&#8776;': 'β‰ˆ',
  '&#120113;': '𝔱',
})

console.log(encoder.rulesCount()) // outputs 21

encode()

Encodes special characters in the given string to HTML entities.

import { Encoder } from '@igorskyflyer/encode-entities'

const encoder: Encoder = new Encoder()

console.log(encoder.encode('<strong>')) // outputs '&#60;strong&#62;'


πŸ“ Changelog

πŸ“‘ The changelog is available here, CHANGELOG.md.



πŸͺͺ License

Licensed under the MIT license which is available here, MIT license.



πŸ’– Support

I work hard for every project, including this one and your support means a lot to me!
Consider buying me a coffee. β˜•

Donate to igorskyflyer

Thank you for supporting my efforts! πŸ™πŸ˜Š


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πŸ‘¨πŸ»β€πŸ’» Author

Created by Igor Dimitrijević (@igorskyflyer).

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