Repro
import express, { NextFunction, Request, Response } from 'express';
// Configure Headers
server.use((req: Request, res: Response, next: NextFunction) => {
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader(
'Access-Control-Allow-Methods',
'GET, POST, OPTIONS, PUT, PATCH, DELETE'
);
res.setHeader(
'Access-Control-Allow-Headers',
'Origin, X-Requested-With, Content-Type, Accept'
);
next();
});
{
"env": {
"es6": true,
"node": true
},
"extends": ["airbnb-base"],
"globals": {
"Atomics": "readonly",
"SharedArrayBuffer": "readonly"
},
"parser": "@typescript-eslint/parser",
"parserOptions": {
"ecmaVersion": 2018,
"sourceType": "module"
},
"plugins": ["@typescript-eslint"],
"rules": {
"comma-dangle": "off",
"arrow-body-style": "off"
}
}
Expected Result
no warning or error
Actual Result
'NextFunction' is defined but never used.eslint(no-unused-vars)
'Request' is defined but never used.eslint(no-unused-vars)
'Response' is defined but never used.eslint(no-unused-vars)
Additional Info
/Users/Jason/Documents/Projects/Typescript/express-typescript/src/index.ts
1:19 error 'NextFunction' is defined but never used no-unused-vars
1:33 error 'Request' is defined but never used no-unused-vars
1:42 error 'Response' is defined but never used no-unused-vars
31:3 warning Unexpected console statement no-console
Versions
| package | version |
| ---------------------------------- | ------- |
| @typescript-eslint/eslint-plugin | ^2.1.0 |
| @typescript-eslint/parser | ^2.1.0 |
| TypeScript | ^3.5.3 |
| ESLint | ^6.3.0 |
| node | 10.15.1 |
| npm | 6.10.3 |
Duplicate of #363
Most helpful comment
Duplicate of #363