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73 lines
2.1 KiB
Markdown
73 lines
2.1 KiB
Markdown
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# tr46
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An JavaScript implementation of [Unicode Technical Standard #46: Unicode IDNA Compatibility Processing](https://unicode.org/reports/tr46/).
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## Installation
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[Node.js](http://nodejs.org) ≥ 8 is required. To install, type this at the command line:
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```shell
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npm install tr46
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# or
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yarn add tr46
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```
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## API
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### `toASCII(domainName[, options])`
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Converts a string of Unicode symbols to a case-folded Punycode string of ASCII symbols.
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Available options:
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* [`checkBidi`](#checkBidi)
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* [`checkHyphens`](#checkHyphens)
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* [`checkJoiners`](#checkJoiners)
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* [`processingOption`](#processingOption)
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* [`useSTD3ASCIIRules`](#useSTD3ASCIIRules)
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* [`verifyDNSLength`](#verifyDNSLength)
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### `toUnicode(domainName[, options])`
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Converts a case-folded Punycode string of ASCII symbols to a string of Unicode symbols.
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Available options:
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* [`checkBidi`](#checkBidi)
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* [`checkHyphens`](#checkHyphens)
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* [`checkJoiners`](#checkJoiners)
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* [`processingOption`](#processingOption)
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* [`useSTD3ASCIIRules`](#useSTD3ASCIIRules)
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## Options
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### `checkBidi`
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Type: `Boolean`
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Default value: `false`
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When set to `true`, any bi-directional text within the input will be checked for validation.
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### `checkHyphens`
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Type: `Boolean`
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Default value: `false`
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When set to `true`, the positions of any hyphen characters within the input will be checked for validation.
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### `checkJoiners`
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Type: `Boolean`
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Default value: `false`
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When set to `true`, any word joiner characters within the input will be checked for validation.
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### `processingOption`
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Type: `String`
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Default value: `"nontransitional"`
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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.
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### `useSTD3ASCIIRules`
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Type: `Boolean`
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Default value: `false`
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When set to `true`, input will be validated according to [STD3 Rules](http://unicode.org/reports/tr46/#STD3_Rules).
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### `verifyDNSLength`
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Type: `Boolean`
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Default value: `false`
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When set to `true`, the length of each DNS label within the input will be checked for validation.
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