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Simple CORS method to control response headers.
npm install -P corsable
const corsable = require( 'corsable' );
const micro = require( 'micro' ); // or your chosen framework
const simple_handler = ( request, response ) => {
corsable( response );
micro.send( response, 200, 'this is a CORS-enabled response' );
};
const configured_handler = ( request, response ) => {
corsable( {
max_age: 3600,
origin: 'somedomain.com',
allow_methods: [ 'POST', 'PUT', 'GET', 'DELETE' ],
allow_headers: [ 'Access-Control-Allow-Origin', 'Content-Type', 'Authorization','Accept' ],
expose_headers: [ 'Authorization' ]
}, response );
micro.send( response, 200, 'this is a CORS-enabled and configured response' );
};
const origin_list_handler = ( request, response ) => {
corsable( {
origin: [ 'domain.com', 'otherdomain.com' ]
}, request, response );
micro.send( response, 200, 'this is a CORS-enabled response that respects a list of origins' );
};
const origin_regex_handler = ( request, response ) => {
corsable( {
origin: new RegExp( 'https\:\/\/(?:.*\.)?somedomain\.com', 'i' )
}, request, response );
micro.send( response, 200, 'this is a CORS-enabled response that requires an https origin that matches (*.)somedomain.com' );
};
Or, you can create some middleware (micro-compatible example, but should work for others as well):
const corsable = require( 'corsable' );
const middleware = options => handler => ( request, response ) => {
corsable( options, response );
return handler( request, response );
};
const cors = middleware( {
max_age: 3600
} );
module.exports = cors( ( request, response ) => {
// do your CORS-compatible thing
} );
max_age
(Access-Control-Max-Age) [integer]default: 86400
origin
(Access-Control-Allow-Origin) [string, array, regexp]default: *
allow_methods
(Access-Control-Allow-Methods) [array]default: [ 'POST', 'GET', 'PUT', 'PATCH', 'DELETE', 'OPTIONS' ]
allow_headers
(Access-Control-Allow-Headers) [array]default: [ 'X-Requested-With', 'Access-Control-Allow-Origin', 'X-HTTP-Method-Override', 'Content-Type', 'Authorization', 'Accept', 'Cookie' ]
expose_headers
(Access-Control-Expose-Headers) [array]default: [ 'Authorization', 'Set-Cookie' ]
FAQs
lightweight CORS
The npm package corsable receives a total of 30 weekly downloads. As such, corsable popularity was classified as not popular.
We found that corsable demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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