code: function generatePublicApiTs() {
    const configFile = path.resolve(__dirname, '../src/ng5-slider/lib/public_api.json');
    const tsFile = path.resolve(__dirname, '../src/ng5-slider/lib/public_api.ts');
  
    const config = JSON.parse(fs.readFileSync(configFile, { encoding: 'utf8' }));
  
    let tsFileContent = '';
  
    for (let exportDef of config.exports) {
      if (exportDef.what instanceof Array) {
        const whats = exportDef.what.join(', ');
        tsFileContent += `export { ${whats} } from '${exportDef.file}';\n`;
      } else {
        tsFileContent += `export ${exportDef.what} from '${exportDef.file}';\n`;
      }
    }
  
    fs.writeFileSync(tsFile, tsFileContent, {encoding: 'utf8'});
  }
docs: Convert public_api.json to public_api.ts