json-schema-to-es-mapping/src/normalize-required.js

Generate Elastic Search mappings from JSON Schema

function normalizeRequired(schema) {
  let { properties, required } = schema;
  required = required || [];
  return Object.keys(properties).reduce((acc, key) => {
    const value = properties[key];
    const isRequired = required.indexOf(key) >= 0;
    value.required = value.required || isRequired;
    acc[key] = value;
    return acc;
  }, {});
}

module.exports = {
  normalizeRequired
};