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upgradeExpress

Upgrade Express vals to the Web API without breaking existing consumers

How it works

upgradeExpress wraps a Web handler into a function that works as normal when called by the Web API, and redirects to the Web API when called by the Express API.

Example

I don't have an example for this per se but I used it to upgrade @easrng/button.

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export const upgradeExpress = (handler: (request: Request) => Response | PromiseLike<Response>) =>
function(request: Request | express.Request, response?: express.Response): Response | Promise<Response> {
if (request instanceof Request) {
const response = handler(request);
if (response instanceof Response) {
return response;
} else {
return Promise.resolve(response);
}
}
const domain: string = request.get("host").replace(/\.express\.val\.run$/, ".web.val.run");
response!.redirect(`https://${domain}${request.originalUrl}`);
};
March 12, 2024