Fixer of unemitted imports processed by TS with "paths"

postbuild.js

/**
 * Специальный скрипт, который фиксит отсутствие emit'а тс-импортов
 * А так же копирует в dist такие вещи как assets
 */

// eslint-disable-next-line @typescript-eslint/no-var-requires,no-undef
const fs = require('node:fs');

console.log('INFO: Start postbuild.js');

const fixEsImports = (fileContent = '', level = 0) => {
  let lines = fileContent.split('\n');

  lines = lines.map((line) => {
    if (/import.*from/.test(line) || /import '.*'/.test(line)) {
      const backpath = (new Array(level).fill('../')).join('');

      return line.replace('~/', backpath);
    }

    return line;
  });

  return lines.join('\n');
};

const fixScssImports = (fileContent = '', level = 0) => {
  let lines = fileContent.split('\n');

  lines = lines.map((line) => {
    if (/@import.*/.test(line) || /url\(.*\)/.test(line)) {
      const backpath = (new Array(level).fill('../')).join('');

      return line.replace('src/', backpath);
    }

    return line;
  });

  return lines.join('\n');
};

const readDirRecursively = (root = 'dist') => {
  const result = {};
  const readResult = fs.readdirSync(root);

  readResult.forEach((path) => {
    result[path] = {
      isDir: fs.statSync(`${root}/${path}`).isDirectory(),
      contents: []
    };

    if (result[path].isDir) {
      result[path].contents = readDirRecursively(`${root}/${path}`);
    } else {
      result[path].contents = null;
    }
  });

  return result;
};

const traverseRecursive = (tree = {}, cb, level = 0, prevPath = 'dist') => {
  Object.entries(tree).forEach(([ path, { isDir, contents } ]) => {
    const allPath = `${prevPath}/${path}`;

    if (isDir) {
      traverseRecursive(contents, cb, level + 1, allPath);
    } else {
      cb(allPath, level);
    }
  });
};

// Копирование прочих файлов
fs.cpSync('src/assets', 'dist/assets', { recursive: true });
fs.cpSync('src/mocks', 'dist/mocks', { recursive: true });
const srcStructure = readDirRecursively('src');
traverseRecursive(srcStructure, (allPath) => {
  if (allPath.includes('.scss')) {
    fs.copyFileSync(allPath, allPath.replace('src', 'dist'));
  }
}, 0, 'src');

// Фикс путей (es modules + scss imports)
const structure = readDirRecursively();
traverseRecursive(structure, (allPath, level) => {
  if (allPath.includes('.scss')) {
    const file = fs.readFileSync(allPath).toString();
    const fixed = fixScssImports(file, level);
    fs.writeFileSync(allPath, fixed);
  } else {
    const file = fs.readFileSync(allPath).toString();
    const fixed = fixEsImports(file, level);
    fs.writeFileSync(allPath, fixed);
  }
});