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const i18n = require( '@wordpress/i18n' ); |
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const { default: md5 } = require( 'md5-es' ); |
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|
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const locationMap = { |
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plugin: 'plugins/', |
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theme: 'themes/', |
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core: '', |
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}; |
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|
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const hasOwn = ( obj, prop ) => Object.prototype.hasOwnProperty.call( obj, prop ); |
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|
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module.exports = { |
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state: { |
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baseUrl: null, |
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locale: null, |
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domainMap: {}, |
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domainPaths: {}, |
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}, |
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|
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/** |
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* Download and register translations for a bundle. |
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* |
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* @param {string} path - Bundle path being fetched. May have a query part. |
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* @param {string} domain - Text domain to register into. |
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* @param {string} location - Location for the translation: 'plugin', 'theme', or 'core'. |
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* @return {Promise} Resolved when the translations are registered, or rejected with an `Error`. |
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*/ |
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async downloadI18n( path, domain, location ) { |
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const state = this.state; |
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if ( ! state || typeof state.baseUrl !== 'string' ) { |
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throw new Error( 'wp.jpI18nLoader.state is not set' ); |
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} |
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|
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// "en_US" is the default, no translations are needed. |
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if ( state.locale === 'en_US' ) { |
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return; |
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} |
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|
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// Check that fetch is available. |
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if ( typeof fetch === 'undefined' ) { |
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throw new Error( 'Fetch API is not available.' ); |
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} |
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|
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// Extract any query part and hash the script name like WordPress does. |
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const pathPrefix = hasOwn( state.domainPaths, domain ) ? state.domainPaths[ domain ] : ''; |
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let hash, query; |
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const i = path.indexOf( '?' ); |
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if ( i >= 0 ) { |
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hash = md5.hash( pathPrefix + path.substring( 0, i ) ); |
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query = path.substring( i ); |
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} else { |
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hash = md5.hash( pathPrefix + path ); |
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query = ''; |
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} |
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|
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// Download. |
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const locationAndDomain = hasOwn( state.domainMap, domain ) |
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? state.domainMap[ domain ] |
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: locationMap[ location ] + domain; |
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const res = await fetch( |
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// prettier-ignore |
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`${ state.baseUrl }${ locationAndDomain }-${ state.locale }-${ hash }.json${ query }` |
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); |
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if ( ! res.ok ) { |
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throw new Error( `HTTP request failed: ${ res.status } ${ res.statusText }` ); |
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} |
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const data = await res.json(); |
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|
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// Extract the messages from the file and register them. |
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const localeData = hasOwn( data.locale_data, domain ) |
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? data.locale_data[ domain ] |
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: data.locale_data.messages; |
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localeData[ '' ].domain = domain; |
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i18n.setLocaleData( localeData, domain ); |
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}, |
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}; |
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|
