// My own take

const JSON_ESCAPE = {
  '&': '\\u0026',
  '>': '\\u003e',
  '<': '\\u003c',
  '\u2028': '\\u2028',
  '\u2029': '\\u2029'
};

const JSON_ESCAPE_REGEXP = /[\u2028\u2029&><]/g;

const jsonStringifyForScriptTag = (obj) =>
  JSON.stringify(obj)
    .replace(JSON_ESCAPE_REGEXP, match => JSON_ESCAPE[match]);