@benricheson101/i18n
v1.3.1
Published
A very tiny Node.js internationalization library
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Readme
Usage:
- Install i18n
$ yarn add @benricheson101/i18n
# or
$ npm install @benricheson101/i18n
- Import and instantiate the constructor
const I18n = require('@benricheson101/i18n')
const i = new I18n({ fallback: 'en' })
- Parse yaml
i.parseDir('./i18n')
.parseFile('./en.yml')
.parse(`
en:
STRING: 'aaaaaa'
PLACEHOLDER: 'This has a placeholder: %{food}'
COMMAND:
MAN:
SHORT_DESC: 'Read a command\'s manual'
OPTIONS:
- 'works'
- 'with'
- '%{datatype}'
- 'too'
`)
- Use the string methods!
i.get('en', 'STRING') // aaaaaa
i.replace('en', 'PLACEHOLDER', { food: 'potato' }) // This has a placeholder: potato
i.get('en', 'COMMAND:MAN:SHORT_DESC') // Read a command's manual
i.replace('en', 'OPTIONS', { datatype: 'arrays' }) // ['works', 'with', 'arrays', 'too']
Options and Methods:
Constructor Options:
fallback: string
- set a fallback language code
Parse Methods:
parseDir(dir: string)
- adds all files ending in.yml
from the specified dirparseFile(file: string)
- adds a single fileparseRecursive(dir: string)
- adds all yaml files in a dir/subdirs recursivelyparse(yaml: string, file?: string)
- adds a yaml string
Generator Method:
generate(code?: string)
- generate missing strings for all files. (See below for explanation)
String Methods:
get(code: string, stringKey: string)
- gets a stringreplace(code: string, stringKey: string, placeholders: object)
- gets a string and replaces placeholders
Setters/Getters:
regex () = placeholder_regex: RegExp
- regex for extracting and replacing placeholders. note: the placeholder name capture group MUST be namedplaceholder
Static Properties:
langs
- a set contain all of the added language codesstrings
- the added language files/stringsraw
- an array of raw language file data
Usage Example:
Basic Parsing:
# i18n/en.yml
en:
STRING: 'This is a string'
STRING_WITH_PLACEHOLDER: 'This is a placeholder: %{placeholder}'
NESTED:
OBJECTS:
WORK:
TOO: 'abcde'
Note: yaml files must start with the language code on the first line, with no indentation, followed by translated strings. Refer to the above example.
const i = new I18n()
.parseDir('./i18n')
i.get('en', 'STRING') // This is a string
i.replace('en', 'STRING_WITH_PLACEHOLDER', { placeholder: 'abc123' }) // This is a placeholder: abc123
i.get('en', 'NESTED:OBJECTS:WORK:TOO') // abcde
Using the Generator:
What does it do?
Imagine you add 100 new strings to en.yml
. Your translators may have a difficult time seeings which strings are missing or could easily miss one. The generator will add all of the new strings from the default (fallback
) language as empty strings so it is easy to see what must be added and what already exists
Example:
# i18n/en.yml
en:
food:
fruits:
- apple
- banana
generator:
id: foods
# ------
# i18n/es.yml
es: {}
generator:
id: foods
Note: the
generator.id
property can be anything (string or number); after running the generator, all files with the samegenerator.id
will have the same structure and strings. settinggenerator.ignore
tofalse
or not including agenerator
object at all will ignore the file.
new I18n({ fallback: 'en' })
.parseDir('./i18n')
.generate()
Note: the
generate
function returns the class instance, so methods can be chained.
After running the generate function, i18n/es.yml
will look like this:
es:
food:
fruits:
- ''
- ''
generator:
id: foods