This lesson will demonstrate how to recreate a simplified version of the popular lodash.merge method from scratch.
First we'll create a test file with two objects that we want to merge together and demonstrate the output after running them through lodash.merge , then we'll go about creating our own version of the function.
Our initial version will support only one
After getting basic types to merge we'll show off two methods for merging arrays, either using concat or recursively going through the children and merging them.
Finally we'll build our own
isObject function to check for object literals and recursively apply our
mergeJSON function to any object literals in our
And last we'll add support for multiple
source objects to be merged in using a
mergeJSON method we create approximates the
lodash.merge functionality but does not seek to replace it. It may be useful for some use cases, but primarily it's meant to be a tool for understanding how to merge objects with recursion.