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path: root/scripts/merge-messages.js
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/* eslint-disable no-console */
import fs from 'node:fs';
import path from 'node:path';
import { createRequire } from 'module';
import prettier from 'prettier';

const require = createRequire(import.meta.url);

const messages = require('../build/extracted-messages.json');
const dest = path.resolve(process.cwd(), 'src/lang');
const files = fs.readdirSync(dest);
const keys = Object.keys(messages).sort();

/*
This script takes extracted messages and merges them
with the existing files under `lang`. Any newly added
keys will be printed to the console.
 */
files.forEach(file => {
  const lang = require(path.resolve(process.cwd(), `src/lang/${file}`));

  console.log(`Merging ${file}`);

  const merged = keys.reduce((obj, key) => {
    const message = lang[key];

    if (file === 'en-US.json') {
      obj[key] = messages[key].defaultMessage;
    } else {
      obj[key] = message || messages[key].defaultMessage;
    }

    if (!message) {
      console.log(`* Added key ${key}`);
    }

    return obj;
  }, {});

  const json = prettier.format(JSON.stringify(merged), { parser: 'json' });

  fs.writeFileSync(path.resolve(dest, file), json);
});