Create schema recursion

createSchemaRecursive.js

function createSchema(obj) {
  return Object.entries(obj).reduce(recurse, {});
}

function recurse(prev, [currentKey, currentValue]) {
  let valType;

  switch (typeof currentValue) {
    case 'string':
      valType = 'string';
      break;
    case 'number':
      valType = 'number';
      break;
    default:
      valType = Object.entries(currentValue).reduce(recurse, {});
  }

  return {
    ...prev,
    [currentKey]: typeof currentValue === 'object' ? valType : {
      name: currentKey,
      type: valType,
    },
  };
}

createSchemaRecursiveBase.js

function createSchema(obj) {
  return Object.entries(obj).reduce(recurse, {})
}

function recurse(prev, [currentKey, currentValue]) {
  let valType;
  switch (typeof currentValue) {
    case 'string':
      valType = 'string';
      break;
    case 'number':
      valType = 'number';
      break;
    default:
      valType = Object.entries(currentValue).reduce(recurse, {});
  }

  return {
    ...prev,
    [currentKey]: valType,
  };
}

createSchemaRecursiveBase2.js

function createSchema(obj) {
  return recurse(obj);
}

function recurse(obj) {
  return Object.entries(obj).reduce((prev, [currentKey, currentValue]) => {
    let retval;

    switch (typeof currentValue) {
      case 'number':
        retval = 'number';
        break;
      case 'string':
        retval = 'string';
        break;
      default:
        retval = recurse(currentValue);
    }

    return {
      ...prev,
      [currentKey]: retval,
    };
  }, {});
}