fetch-text-cache v0.0.3

Fetch Text Cache

This project goal is to provide a almost seamless way to cache requests.

By-pass

All requests are done using fetch, if the requests returns an OK response, the body and headers are cached. If an exception is thrown, the last cached result are returned, as if it was a regular response, except with a cached attribute.

How to use it?

Use fetch-text-cache should be identical to use fetch, except for the import.

const cachedFetch = require('fetch-text-cache')();

cachedFetch('http://localhost:4343/').then(resp => {
    resp.text().then(text => {
        console.log(text);
    })
});

Providing custom persistence

This lib enabled the user to use a custom persistence layer. It must be provided a object with three methods: put, get and contains. All these methods should return a Promise.

const map = {};
const customPersistence = {
    put:(k,v) => new Promise(resolve=>{
        map[k] = v;
        resolve();
    }),
    get:k => Promise.resolve(map[k]),
    contains:k => Promise.resolve(!!map[k])
}

const cachedFetch = require('fetch-text-cache')(customPersistence);

cachedFetch('http://localhost:4343/').then(resp => {
    resp.text().then(text => {
        console.log(text);
    })
});