expressjs/express
Fast, unopinionated, minimalist web framework for node. · JavaScript · ★ 69,288
Analyzed at a3714473fe on 2026-07-31. 22 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| name argument is required to req.get | exception | error | express, http-headers, typeerror, request |
| name must be a string to req.get | exception | error | express, http-headers, typeerror, type-validation |
| app.use() requires a middleware function | exception | error | express, middleware, app-use, typeerror |
| callback function required | exception | error | express, template-engine, view-engine, configuration |
| Failed to lookup view "' + name + '" in views ' + dirs | exception | error | express, view-resolution, rendering, deployment, filesystem |
| No default engine was specified and no extension was provide | exception | error | express, view-engine, configuration, rendering |
| Module "' + mod + '" does not provide a view engine. | exception | error | express, view-engine, template-engine, module-resolution |
| unknown value for etag function: ' + val | exception | error | express, configuration, etag, settings |
| unknown value for query parser function: ' + val | exception | error | express, configuration, query-parser, migration, express-5 |
| Invalid status code: ${JSON.stringify(code)}. Status code mu | validation | error | express, http-status, typeerror, express-5, migration |
| Invalid status code: ${JSON.stringify(code)}. Status code mu | validation | error | express, http, status-code, range-error |
| path argument is required to res.sendFile | exception | error | express, sendfile, validation |
| path must be a string to res.sendFile | exception | error | express, sendfile, type-error |
| path must be absolute or specify root to res.sendFile | exception | error | express, sendfile, path, configuration |
| Not Acceptable | http | warning | express, content-negotiation, http-406, accept-header |
| Content-Type cannot be set to an Array | exception | error | express, headers, content-type, type-error |
| cookieParser("secret") required for signed cookies | exception | error | express, cookies, cookie-parser, configuration, security |
| Provide a url argument | console | warning | express, redirect, deprecation |
| Url must be a string | console | warning | express, redirect, deprecation, type-error |
| Status must be a number | console | warning | express, redirect, deprecation, status-code |
ECONNABORTED Request aborted | error_code | warning | network, express, sendfile, client-abort, http |
EISDIR EISDIR, read | error_code | error | filesystem, express, sendfile, path-resolution |