As-Mongo

Manipulate object by static json, as mongo.

import asMongo

import { amUpdate } from './as-mongo';

$set

const obj = { prop1: 'prop1', prop2: 'prop2' };
amUpdate(obj, { $set: { prop1: 'good' } });

const result = JSON.stringify(obj);
const goal = '{"prop1":"good","prop2":"prop2"}';
if (result === goal) {
  console.log('$set: success');
} else {
  console.log('change object: failed');
  console.log('hope:', goal);
  console.log('but :', result);
}

$push obj

const bePushedArr = [{ prop1: 'obj1' }, { prop1: 'opj2' }];
amUpdate(
  { bePushedArr },
  {
    $push: {
      bePushedArr: { prop1: 'obj3' },
    },
  },
);

const pushed = JSON.stringify(bePushedArr);
const goalPushed = '[{"prop1":"obj1"},{"prop1":"opj2"},{"prop1":"obj3"}]';

if (pushed === goalPushed) {
  console.log('$push: success');
} else {
  console.log('$push: failed');
  console.log('hope:', goalPushed);
  console.log('but :', pushed);
}

$push string

const bePushedArrStr = [{ prop1: 'obj1' }, { prop1: 'opj2' }];
amUpdate(
  { bePushedArrStr },
  {
    $push: {
      bePushedArrStr: 'test',
    },
  },
);

const pushedStr = JSON.stringify(bePushedArrStr);
const goalPushedStr = '[{"prop1":"obj1"},{"prop1":"opj2"},"test"]';

if (pushedStr === goalPushedStr) {
  console.log('$push str: success');
} else {
  console.log('$push str: failed');
  console.log('hope:', goalPushedStr);
  console.log('but :', pushedStr);
}

$addToSet

const beSettedArr = [{ prop1: 'obj1' }, { prop1: 'opj2' }];
amUpdate(
  { beSettedArr },
  {
    $addToSet: {
      beSettedArr: {
        $each: [
            { prop1: 'obj1' },
            { prop1: 'obj3' },
          ],
      },
      //beSettedArr: { prop1: 'obj3' }
    },
  },
);

const setted = JSON.stringify(beSettedArr);
const goalSetted = '[{"prop1":"obj1"},{"prop1":"opj2"},{"prop1":"obj3"}]';

if (setted === goalSetted) {
  console.log('$addToSet: success');
} else {
  console.log('$addToSet: failed');
  console.log('hope:', goalSetted);
  console.log('but :', setted);
}

$push $each

const beMultiPushedArr = [{ prop1: 'obj1' }, { prop1: 'opj2' }];
amUpdate(
  { beMultiPushedArr },
  {
    $push: {
      beMultiPushedArr: {
        $each: [{ prop1: 'obj3'}, { prop2: 'obj4' }]
      },
    },
  },
);

const multiPushed = JSON.stringify(beMultiPushedArr);
const goalMultiPushed = '[{"prop1":"obj1"},{"prop1":"opj2"},{"prop1":"obj3"},{"prop2":"obj4"}]';

if (multiPushed === goalMultiPushed) {
  console.log('$push $each: success');
} else {
  console.log('$push $each: failed');
  console.log('hope:', goalMultiPushed);
  console.log('but :', multiPushed);
}

$pull

const pulledArr = [{ prop1: 'obj_1_1' }, { prop1: 'obj_2_1' }, { prop1: 'obj_3_1', prop2: 'obj_3_2' }];
amUpdate(
  {
    deep: {
      pulledArr,
    },
  },
  {
    $pull: {
      'deep.pulledArr': {
        prop1: 'obj_3_1',
      },
    },
  },
);

const pulled = JSON.stringify(pulledArr);
const pulledGoal = '[{"prop1":"obj_1_1"},{"prop1":"obj_2_1"}]';

if (pulled === pulledGoal) {
  console.log('$pull: success');
} else {
  console.log('$pull: failed');
  console.log('hope:', pulledGoal);
  console.log('but :', pulled);
}

arrayFilters （for nested array）

const beFiltedArr = [
  {
    prop1: 'obj_1',
    children: [{ prop1: 'obj_1_1' }]
  },
  {
    prop1: 'obj_2',
    children: [{ prop1: 'obj_2_1'}]
  }
];
amUpdate(
  { beFiltedArr },
  {
    $push: {
      'beFiltedArr[item].children': { prop1: 'obj3' },
    },
  },
  {
    arrayFilters: {
      item: { prop1: 'obj_2' },
    },
  },
);

const pushedFiltedArr = JSON.stringify(beFiltedArr);

const goalPushedFiltedArr = '[{"prop1":"obj_1","children":[{"prop1":"obj_1_1"}]},{"prop1":"obj_2","children":[{"prop1":"obj_2_1"},{"prop1":"obj3"}]}]';

if (pushedFiltedArr === goalPushedFiltedArr) {
  console.log('arrayFilters: success');
} else {
  console.log('arrayFilters: failed');
  console.log('hope:', goalPushedFiltedArr);
  console.log('but :', pushedFiltedArr);
}