tr46

An JavaScript implementation of Unicode Technical Standard #46: Unicode IDNA Compatibility Processing.

Installation

Node.js ≥ 12 is required. To install, type this at the command line:

npm install tr46
# or
yarn add tr46

API

toASCII(domainName[, options])

Converts a string of Unicode symbols to a case-folded Punycode string of ASCII symbols.

Available options:

• checkBidi
• checkHyphens
• checkJoiners
• processingOption
• useSTD3ASCIIRules
• verifyDNSLength

toUnicode(domainName[, options])

Converts a case-folded Punycode string of ASCII symbols to a string of Unicode symbols.

Available options:

• checkBidi
• checkHyphens
• checkJoiners
• processingOption
• useSTD3ASCIIRules

Options

checkBidi

Type: boolean Default value: false When set to true, any bi-directional text within the input will be checked for validation.

checkHyphens

Type: boolean Default value: false When set to true, the positions of any hyphen characters within the input will be checked for validation.

checkJoiners

Type: boolean Default value: false When set to true, any word joiner characters within the input will be checked for validation.

processingOption

Type: string Default value: "nontransitional" When set to "transitional", symbols within the input will be validated according to the older IDNA2003 protocol. When set to "nontransitional", the current IDNA2008 protocol will be used.

useSTD3ASCIIRules

Type: boolean Default value: false When set to true, input will be validated according to STD3 Rules.

verifyDNSLength

Type: boolean Default value: false When set to true, the length of each DNS label within the input will be checked for validation.