Migrate recipes for Express.js v5

This codemod migration recipe helps you update your Express.js v4 applications to be compatible with Express.js v5 by addressing deprecated APIs.

Included transformations:

• Package JSON Dependencies: Updates existing package entries in package.json that match Express.js v5 direct dependencies and related Express type packages.
• Back Redirect Deprecated: This transformation updates instances of res.redirect('back') and res.location('back') to use the recommended alternatives. Registry entry: https://app.codemod.com/registry/@expressjs/back-redirect-deprecated.
• Explicit Request Params: Migrates usage of the legacy API req.param(name) to the current recommended alternatives. Registry entry: https://app.codemod.com/registry/@expressjs/explicit-request-params.
• Pluralize Method Names: Migrates deprecated singular request methods to their pluralized counterparts where applicable. Registry entry: https://app.codemod.com/registry/@expressjs/pluralize-method-names.
• Status Send Order: Migrates usages of res.send(status), res.send(obj, status), res.json(obj, status), and res.jsonp(obj, status) to the recommended argument ordering. Registry entry: https://app.codemod.com/registry/@expressjs/status-send-order.
• Redirect Arg Order: Converts res.redirect(url, status) calls to the recommended res.redirect(status, url) ordering. Registry entry: https://app.codemod.com/registry/@expressjs/redirect-arg-order.
• Camelcase Sendfile: Replaces legacy res.sendfile(file) usages with the camel-cased res.sendFile(file) API. Registry entry: https://app.codemod.com/registry/@expressjs/camelcase-sendfile.
• Route Del to Delete: Migrates usage of the legacy APIs app.del() to app.delete(). Registry entry: https://app.codemod.com/registry/@expressjs/route-del-to-delete.
• Static Dotfiles: Adds an explicit dotfiles option to express.static() calls and renames the removed hidden and from options to preserve Express 4 behavior. Registry entry: https://app.codemod.com/registry/@expressjs/static-dotfiles.
• Static Mime: Migrates express.static.mime (removed in Express 5) to the mime-types package. Registry entry: https://app.codemod.com/registry/@expressjs/static-mime.
• Sendfile Options: Adds an explicit dotfiles option to res.sendFile() calls and renames the removed hidden and from options to preserve Express 4 behavior. Registry entry: https://app.codemod.com/registry/@expressjs/sendfile-options.

References

• Express.js v5 Migration Guide