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mathiasbynens / punycode.js Public
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A robust Punycode converter that fully complies to RFC 3492 and RFC 5891.

mths.be/punycode


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1.4k stars 167 forks
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LATEST COMMIT

mathiasbynens Fix broken reference
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36db01b Jan 19, 2023
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.github/workflows
Rename package.json#name before publishing punycode.js
January 19, 2023 18:56
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Add support for named exports
May 21, 2018 22:44
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January 18, 2023 12:47
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Drop support for old environments
June 10, 2016 18:10
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August 22, 2014 08:28
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Fix broken reference
January 20, 2023 00:09
package.json
Release v2.3.0
January 19, 2023 18:58
punycode.js
Add test for #115
January 18, 2023 08:35
View code
Punycode.js Installation API punycode.decode(string) punycode.encode(string)
punycode.toUnicode(input) punycode.toASCII(input) punycode.ucs2
punycode.ucs2.decode(string) punycode.ucs2.encode(codePoints) punycode.version
For maintainers How to publish a new release Author License


README.MD


PUNYCODE.JS

Punycode.js is a robust Punycode converter that fully complies to RFC 3492 and
RFC 5891.

This JavaScript library is the result of comparing, optimizing and documenting
different open-source implementations of the Punycode algorithm:

 * The C example code from RFC 3492
 * punycode.c by Markus W. Scherer (IBM)
 * punycode.c by Ben Noordhuis
 * JavaScript implementation by some
 * punycode.js by Ben Noordhuis (note: not fully compliant)

This project was bundled with Node.js from v0.6.2+ until v7 (soft-deprecated).

This project provides a CommonJS module that uses ES2015+ features and
JavaScript module, which work in modern Node.js versions and browsers. For the
old Punycode.js version that offers the same functionality in a UMD build with
support for older pre-ES2015 runtimes, including Rhino, Ringo, and Narwhal, see
v1.4.1.


INSTALLATION

Via npm:

npm install punycode --save



In Node.js:

> ⚠️ Note that userland modules don't hide core modules. For example,
> require('punycode') still imports the deprecated core module even if you
> executed npm install punycode. Use require('punycode/') to import userland
> modules rather than core modules.

const punycode = require('punycode/');




API


PUNYCODE.DECODE(STRING)

Converts a Punycode string of ASCII symbols to a string of Unicode symbols.

// decode domain name parts
punycode.decode('maana-pta'); // 'mañana'
punycode.decode('--dqo34k'); // '☃-⌘'




PUNYCODE.ENCODE(STRING)

Converts a string of Unicode symbols to a Punycode string of ASCII symbols.

// encode domain name parts
punycode.encode('mañana'); // 'maana-pta'
punycode.encode('☃-⌘'); // '--dqo34k'




PUNYCODE.TOUNICODE(INPUT)

Converts a Punycode string representing a domain name or an email address to
Unicode. Only the Punycoded parts of the input will be converted, i.e. it
doesn’t matter if you call it on a string that has already been converted to
Unicode.

// decode domain names
punycode.toUnicode('xn--maana-pta.com');
// → 'mañana.com'
punycode.toUnicode('xn----dqo34k.com');
// → '☃-⌘.com'

// decode email addresses
punycode.toUnicode('джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq');
// → 'джумла@джpумлатест.bрфa'




PUNYCODE.TOASCII(INPUT)

Converts a lowercased Unicode string representing a domain name or an email
address to Punycode. Only the non-ASCII parts of the input will be converted,
i.e. it doesn’t matter if you call it with a domain that’s already in ASCII.

// encode domain names
punycode.toASCII('mañana.com');
// → 'xn--maana-pta.com'
punycode.toASCII('☃-⌘.com');
// → 'xn----dqo34k.com'

// encode email addresses
punycode.toASCII('джумла@джpумлатест.bрфa');
// → 'джумла@xn--p-8sbkgc5ag7bhce.xn--ba-lmcq'




PUNYCODE.UCS2

PUNYCODE.UCS2.DECODE(STRING)

Creates an array containing the numeric code point values of each Unicode symbol
in the string. While JavaScript uses UCS-2 internally, this function will
convert a pair of surrogate halves (each of which UCS-2 exposes as separate
characters) into a single code point, matching UTF-16.

punycode.ucs2.decode('abc');
// → [0x61, 0x62, 0x63]
// surrogate pair for U+1D306 TETRAGRAM FOR CENTRE:
punycode.ucs2.decode('\uD834\uDF06');
// → [0x1D306]



PUNYCODE.UCS2.ENCODE(CODEPOINTS)

Creates a string based on an array of numeric code point values.

punycode.ucs2.encode([0x61, 0x62, 0x63]);
// → 'abc'
punycode.ucs2.encode([0x1D306]);
// → '\uD834\uDF06'




PUNYCODE.VERSION

A string representing the current Punycode.js version number.


FOR MAINTAINERS


HOW TO PUBLISH A NEW RELEASE

 1. On the main branch, bump the version number in package.json:
    
    npm version patch -m 'Release v%s'
    
    
    
    Instead of patch, use minor or major as needed.
    
    Note that this produces a Git commit + tag.

 2. Push the release commit and tag:
    
    git push && git push --tags
    
    
    
    Our CI then automatically publishes the new release to npm, under both the
    punycode and punycode.js names.


AUTHOR

Mathias Bynens


LICENSE

Punycode.js is available under the MIT license.


ABOUT

A robust Punycode converter that fully complies to RFC 3492 and RFC 5891.

mths.be/punycode


RESOURCES

Readme


LICENSE

MIT license


STARS

1.4k stars


WATCHERS

37 watching


FORKS

167 forks


RELEASES 1

v2.0.0 Latest
Jun 29, 2016


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