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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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MIT license
1.4k stars 164 forks
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LATEST COMMIT

whymarrh Fix usage instructions in README (#113)
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6cd1ddd Oct 23, 2020
Fix usage instructions in README (#113)

Refs #79

This change updates the usage instructions in the README to explain
the workaround required to use this module. As userland modules do not
hide core modules, a trailing slash is required to have Node.js use this
module over the built-in.

6cd1ddd


GIT STATS

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FILES

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Type
Name
Latest commit message
Commit time
scripts
Add support for named exports
May 22, 2018
tests
Make punycode.toASCII not alter ASCII-safe input
Jan 6, 2017
.editorconfig
Drop support for old environments
Jun 10, 2016
.gitattributes
Add Gruntfile.js
Mar 31, 2013
.gitignore
Add ES6 module output
Oct 24, 2016
.travis.yml
Add LTS Node.js version to CI settings (#92)
Jul 26, 2019
LICENSE-MIT.txt
Update URL
Aug 22, 2014
README.md
Fix usage instructions in README (#113)
Oct 23, 2020
package.json
Release v2.1.1
May 22, 2018
punycode.js
Release v2.1.0
Jan 6, 2017
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
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).

The current version supports recent versions of Node.js only. It provides a
CommonJS module and an ES6 module. For the old version that offers the same
functionality with broader support, including Rhino, Ringo, Narwhal, and web
browsers, 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.


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

164 forks


RELEASES 1

v2.0.0 Latest
Jun 29, 2016


PACKAGES 0

No packages published




CONTRIBUTORS 11

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LANGUAGES


 * JavaScript 100.0%


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