Documentation / @andrew_l/mongo-pagination / mergeFilters

Function: mergeFilters()

mergeFilters(first, second): Record<string, any>

Merges two MongoDB filters in the most effective way.

This function combines two filters, prioritizing the most specific criteria from both and ensuring the merged filter works efficiently for MongoDB queries.

Parameters

first

Record<string, any>

The first MongoDB filter object.

second

Record<string, any>

The second MongoDB filter object.

Returns

Record<string, any>

The merged MongoDB filter object, combining both filters.

Example

// Basic usage:
const filter1 = { status: 'active', age: { $gt: 18 } };
const filter2 = { age: { $lt: 60 }, country: 'USA' };

const mergedFilter = mergeFilters(filter1, filter2);
console.log(mergedFilter);
// Output: { status: 'active', age: { $gt: 18, $lt: 60 }, country: 'USA' }