devsite/node_modules/bcp-47/lib/stringify.js
2024-07-07 18:49:38 -07:00

44 lines
934 B
JavaScript

'use strict'
module.exports = stringify
// Compile a language schema to a BCP 47 language tag.
function stringify(schema) {
var fields = schema || {}
var result = []
var values
var index
var value
if (fields.irregular || fields.regular) {
return fields.irregular || fields.regular
}
if (fields.language) {
result = result.concat(
fields.language,
fields.extendedLanguageSubtags || [],
fields.script || [],
fields.region || [],
fields.variants || []
)
values = fields.extensions || []
index = -1
while (++index < values.length) {
value = values[index]
if (value.singleton && value.extensions && value.extensions.length) {
result = result.concat(value.singleton, value.extensions)
}
}
}
if (fields.privateuse && fields.privateuse.length) {
result = result.concat('x', fields.privateuse)
}
return result.join('-')
}