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@fiverr/gofor

1.2.0 • Public • Published

gofor

gofor is a (Gofor) factory interface for a lean fetch decorator that deep reverse merges default options. It means the headers you put in for each request will take precedence, but will supplemented with the defaults. It's fetch is a fetch Promise

The index is a factory, returning the wrapped fetch. It is recommended to use the factory method.

Install

npm i -S @fiverr/gofor

Use

Instances are usable straight "out of the box"

const {gofor} = require('@fiverr/gofor');
gofor('/page', {headers: {'X-Custom-Header': 'Custom-Value'}})
    .then(...)
    .catch(...);

Get an instance and configure it:

const {gofor} = require('@fiverr/gofor');
const defaultHeaders = new Headers();
defaultHeaders.append('X-Requested-With', 'XMLHttpRequest');
defaultHeaders.append('Content-Type', 'application/json; charset=utf-8');
defaultHeaders.append('Accept', 'application/json');

gofor.config({
    credentials: 'same-origin',
    headers: defaultHeaders
});

// Use only defaults
gofor('https://www.website.com').then(...);

// Add/Apply other options
gofor('/page', {
    headers: {
        'X-Custom-Header': 'Custom-Value'
    }
}).then(...);

Supports headers as object literals or Headers instances

Default header keys will be run over if matched by passed in header keys. Other keys will be merged. This is made by design.

Example
gofor.config({
    credentials: 'same-origin',
    headers: new Headers({
        'Content-Type': 'application/json; charset=utf-8',
        'X-Custom-Header': 'Custom-Value'
    })
});

gofor('/page', {
    headers: new Headers({
        'Content-Type': 'text/plain',
    })
});

Final headers will be:

    'Content-Type': 'text/plain',
    'X-Custom-Header': 'Custom-Value'

Each gofor getter creates a new instance

const gofor1 = require('@fiverr/gofor').gofor;
const gofor2 = require('@fiverr/gofor').gofor;

gofor1 === gofor2 // false

Gofor Factory: Create an instance using delayed configuration getter

The function will be called once on first use, and its result will be memoised.

const goforFactory = require('@fiverr/gofor');

const gofor = goforFactory(() => ({
    credentials: 'same-origin',
    headers: {
        'X-Requested-With': 'XMLHttpRequest',
        'Content-Type': 'application/json; charset=utf-8',
        'Accept': 'application/json',
        'X-Custom-Secret': document.getElementById('secret').value,
    },
}));

Node Runtime

Gofor is designed for the browser, and depends on the fetch API.

In order to use gofor in node, you must have a polyfill for fetch].

const fetch = require('node-fetch');
const {Headers, Request, Response} = fetch;

// Comply with browser environment
Object.assign(global, {fetch, Headers, Request, Response});

Troubleshooting

.entries is not a function

Object.entries is available in node version >= 7.5.0,

Readme

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Install

npm i @fiverr/gofor

Weekly Downloads

4

Version

1.2.0

License

MIT

Unpacked Size

14 kB

Total Files

10

Last publish

Collaborators

  • fiverrit
  • omrilotan
  • michael5r