将 TS6133已声明但从未读取显示为警告而不是错误

如何解决将 TS6133已声明但从未读取显示为警告而不是错误

以前在使用 typescript 处理 React 项目时，有些情况下我会声明一个变量而不读取它，它会在控制台上通知它作为警告。 VSCode 也会通过黄色波浪线进行通知。

在我正在处理的项目中，未使用的变量显示为“破坏”应用程序的错误。我希望将未使用的变量作为警告而不是错误通知。

尝试过的一些事情包括修改 tsconfig.json。

{
    "noUnusedLocals": false,"noUnusedParameters": false,}

虽然这会在控制台中通知我未使用的变量，并且不会“破坏”应用程序，但 VSCode 不会通知未使用的变量。

tsconfig.json

{
  "compilerOptions": {
    "target": "es5","lib": ["dom","dom.iterable","esnext"],"allowJs": true,"skipLibCheck": true,"esModuleInterop": true,"allowSyntheticDefaultImports": true,"strict": true,"forceConsistentCasingInFileNames": true,"noFallthroughCasesInSwitch": true,"module": "esnext","moduleResolution": "node","resolveJsonModule": true,"isolatedModules": true,"noEmit": true,"jsx": "react-jsx","noImplicitAny": true,"strictNullChecks": true,"strictFunctionTypes": true,"strictPropertyInitialization": true,"noImplicitThis": true,"alwaysStrict": true,"noUnusedLocals": true,"noUnusedParameters": true,"noImplicitReturns": true
  },"include": ["src"]
}

.eslintrc.json

{
  "root": true,"extends": ["react-app","react-app/jest"],"parser": "@typescript-eslint/parser","plugins": ["@typescript-eslint"],"rules": {
    "@typescript-eslint/no-unused-vars": ["warning"]
  }
}

package.json

{
  "name": "project","version": "0.1.0","private": true,"dependencies": {
    "@material-ui/core": "^4.11.3","@material-ui/icons": "^4.11.2","@material-ui/styles": "^4.11.3","@testing-library/jest-dom": "^5.11.4","@testing-library/react": "^11.1.0","@testing-library/user-event": "^12.1.10","material-ui-image": "^3.3.1","react": "^17.0.1","react-dom": "^17.0.1","react-router-dom": "^5.2.0","react-scripts": "4.0.3","typescript": "^4.1.2","web-vitals": "^1.0.1"
  },"scripts": {
    "start": "react-scripts start","build": "react-scripts build","test": "react-scripts test","eject": "react-scripts eject","lint": "eslint . --ext .js,.jsx,.ts,.tsx --max-warnings 0"
  },"browserslist": {
    "production": [
      ">0.2%","not dead","not op_mini all"
    ],"development": [
      "last 1 chrome version","last 1 firefox version","last 1 safari version"
    ]
  },"devDependencies": {
    "@types/jest": "^26.0.20","@types/node": "^14.14.31","@types/react": "^17.0.2","@types/react-dom": "^17.0.1","@types/react-router-dom": "^5.1.7","@typescript-eslint/eslint-plugin": "^4.15.2","@typescript-eslint/parser": "^4.15.2","eslint": "^7.20.0","prettier": "2.2.1"
  }
}

错误信息：

D:/path/to/project/src/components/ThemeProvider.tsx
TypeScript error in D:/path/to/project/src/components/ThemeProvider.tsx(23,7):
'someVariable' is declared but its value is never read.  TS6133

    21 |   },22 | });
  > 23 | const someVariable = {};
       |       ^
    24 |
    25 | const ThemeProvider = ({ children }: { children: ReactNode }) => {
    26 |   return <MUIThemeProvider {...{ theme }}>{children}</MUIThemeProvider>;

解决方法

如果启用 ESLint 规则，则指定违规应该是警告，而不是错误。如果需要，请更改您的构建过程，以便只有错误（而非警告）会阻止构建成功。

https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/no-unused-vars.md

"@typescript-eslint/no-unused-vars": ["warning"]