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README.md

tr46

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

Installation

Node.js ≥ 8 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.