Hi people. I just did something with JavaScript in a rush, and I would like to see how other people would solve it. Just to compare and because I'm...
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This is a general design problem.
If I were calling this from a frontend where I had an intermediate server, I would create a single endpoint on my server side which would call the other two URL's. Then, I would aggregate everything and return a response. In addition, I would make it somewhat flexible so I could pass it the type of format I want the data returned in. For instance {host}/api/products/variations?format=csv.
If this were in the backend, you can do it similarly with a function call that would make a call to the two endpoints and merge the data.
On the other hand, if I were calling WooCommerce directly from my frontend, I would create a function as mentioned earlier and fetch the data from both the endpoints and aggregate it. You can use something like Promise.all to accomplish that.