Imagine you have a modern app that you would want to translate to other languages quickly using machine translation. Using this code, you can translate your app to all languages in minutes. For free.<\/p>\n
<\/p>\n
Chances are, you do not want to spend $200 per language. You just want to quickly rollout your app to all possible locales, see the engagement and metrics, and then decide if you want to move forward.<\/p>\n
Here is AWS Lambda code that takes a file named “app_main.en.json” from S3 and creates translated copies of it named\u00a0 “app_main.fr.json”, “app_main.de.json”, etc.<\/p>\n
You will need to create a free account at Deepl to get an API authentication key.<\/p>\n
<\/p>\n
const AWS = require('aws-sdk');\r\nconst S3 = new AWS.S3();\r\nconst https = require('https');\r\n\r\nconst SOURCE_LOCALE = 'en'; \/\/ Replace with the source locale of your i18next JSON file\r\nconst TARGET_LOCALES = ['de', 'fr', 'es']; \/\/ add or remove languages as needed\r\nconst FILE_NAME = 'app_main';\r\nconst BUCKET = 'your bucket';\r\nconst DEEPL_API_KEY = 'Register at Deepl to get your API authentication key';\r\n\r\nexports.handler = async (event) => {\r\n \/\/ Retrieve the i18next JSON file from S3\r\n const params = {\r\n Bucket: BUCKET,\r\n Key: `${FILE_NAME}.${SOURCE_LOCALE}.json`\r\n };\r\n const data = await S3.getObject(params).promise();\r\n const i18nData = JSON.parse(data.Body.toString('utf-8'));\r\n\r\n \/\/ Loop through each target language and translate the i18n data using DeepL API\r\n const translations = {};\r\n const savePromises = [];\r\n for (const language of TARGET_LOCALES) {\r\n const translatedJson = {};\r\n const promises = Object.entries(i18nData).map(async ([key, value]) => { translatedJson[key] = await translate(value, language); });\r\n\r\n await Promise.all(promises);\r\n\r\n const s3Params = {\r\n Bucket: BUCKET,\r\n Key: `${FILE_NAME}.${language}.json`,\r\n Body: JSON.stringify(translatedJson),\r\n ContentType: 'application\/json'\r\n };\r\n const savePromise = S3.putObject(s3Params).promise();\r\n savePromises.push(savePromise);\r\n }\r\n\r\n await Promise.all(savePromises);\r\n\r\n return {\r\n statusCode: 200,\r\n body: JSON.stringify(translations)\r\n };\r\n};\r\n\r\n\/\/ Helper function to translate the i18n data using DeepL API\r\nfunction translate(text, targetLanguage) {\r\n return new Promise((resolve, reject) => {\r\n const apiKey = DEEPL_API_KEY;\r\n const options = {\r\n hostname: 'api-free.deepl.com',\r\n path: '\/v2\/translate',\r\n method: 'POST',\r\n headers: {\r\n 'Content-Type': 'application\/x-www-form-urlencoded'\r\n }\r\n };\r\n const request = https.request(options, (response) => {\r\n let chunks = [];\r\n response.on('data', (chunk) => {\r\n chunks.push(chunk);\r\n });\r\n response.on('end', () => {\r\n const translation = JSON.parse(Buffer.concat(chunks).toString());\r\n console.log(JSON.stringify(translation));\r\n resolve(translation.translations[0].text);\r\n });\r\n });\r\n\r\n request.on('error', (error) => {\r\n reject(error);\r\n });\r\n\r\n const data = new URLSearchParams();\r\n data.append('text', text);\r\n data.append('auth_key', apiKey);\r\n data.append('source_lang', SOURCE_LOCALE);\r\n data.append('target_lang', targetLanguage);\r\n request.write(data.toString());\r\n request.end();\r\n });\r\n}\r\n<\/pre>\n <\/p>\n","protected":false},"excerpt":{"rendered":"
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