using mock data while on development with vue + vuex - vue.js

Question

I'm working on a Vue app which also uses vuex.
Everything is setup ad working correctly as expected but i'd like to improve it so that I can work on it without actually calling the API endpoints (mainly to avoid rate limit).
I created a mock folder and placed some file in there.
How do I manage to use those mock in development, and the real api endpoint on the build on production withouth making a mess in my code ?
I created a repo with as less as possible.
It includes vue + vuex, a single smart component in charge of reading from the store, and a dumb component do display it.
In poor words, I'm looking for a way to do change this:
const actions = {
async fetchTodos({ commit }) {
let response;
if (process.env.NODE_ENV === "development") {
response = { data: todos };
} else {
response = await axios.get("https://jsonplaceholder.typicode.com/todos");
}
commit("setTodos", response.data);
}
};
with something which would be easier to maintain and wouldn't increase the bundle size.
I thought about mocking the whole action object, which seemed to be ok, but how do i avoid to bundle my mock files at that point?
How do you manage your front end environment to avoid this kind of problem?

Answer 1

What I did is encapsulate the whole API in another class/object. That single point of entry then switches between the mock and real api:
// store.js
const api = require('./api');
const actions = {
async fetchTodos({ commit }) {
// you can use api.getTodos() instead or another naming convention
const response = await api.get('todos');
commit("setTodos", response.data);
},
};
// api.js
const realapi = require('./realapi');
const mockapi = require('./mockapi');
module.exports = process.env.NODE_ENV === 'production' ? realapi : mockapi;
// mockapi/index.js
const todos = loadTodos();
module.exports = {
async get(path) {
switch (path) {
case 'todos':
return { data: todos };
// etc.
}
}
};
// realapi/index.js
const root = 'https://jsonplaceholder.typicode.com/';
module.exports = {
get(path) {
return axios.get(root + path);
}
};
Builders like Webpack can optimize the build and remove the whole mock api part in production builds based on the environment.