A native omit function that allows you to specify multiple properties to omit.

ES2019OmitMultiProperty.ts

const omit = (keysToOmit: string[], originalObj = {}) => 
  Object.fromEntries(
    Object.entries(originalObj)
      .filter(([key]) => !keysToOmit.includes(key))
)

const objectFromFrontend = {
  _id: 5,
  data: {
    some: 1,
    useful: 2,
    data: 3
  }
}

const objectToInsertIntoDB = omit(['_id', 'data.some'], objectFromFrontend);

console.log(objectToInsertIntoDB)
/**
* {
*   data: {
*    some: 1, !!! has not been removed
*    useful: 2,
*    data: 3
*  }
* }
*/

console.log(objectFromFrontend)
/**
* {
*   _id: 5,
*   data: {
*    some: 1,
*    useful: 2,
*    data: 3
*  }
* }
*/