Accessing dynamically nested values in Cypress Gherkin Preprocessor

Question

How can you access or modify nested objects with Cypress-Gherkin?

Let's assume you would like to change values of a fixture or validate a response.

You know the path of the keys in the nested object and you would like to add as variable from the Gherkin file, but you realize the nested value cannot set/access easily in JavaScript (at least dynamically):

Accessing nested JavaScript objects and arrays by string path

Answer 1

Luckily Cypress automatically includes lodash: https://docs.cypress.io/api/utilities/_#Syntax

so you don't have to add an extra dependency:

and the answer will be simpler, than I ever expected - but earlier I didn't find it, therefore I am sharing it now:

After you read the fixture (=payloadToModify), you can easily modify:

Cypress._.set(payloadToModify, pathOfKeyFromGherkin, newValueFromGherkin)

or get its value

Cypress._.get(payloadToModify, pathOfKeyFromGherkin)