noEmptyInterface

TypeScript and TSX

摘要

¥Summary

规则生效日期：v1.0.0

¥Rule available since: v1.0.0
诊断类别：lint/suspicious/noEmptyInterface

¥Diagnostic Category: lint/suspicious/noEmptyInterface
此规则为推荐规则，默认启用。

¥This rule is recommended, which means is enabled by default.
此规则包含 safe 修复程序。

¥This rule has a safe fix.
此规则的默认严重级别为 error。

¥The default severity of this rule is error.
来源：

¥Sources:
- 灵感来自 @typescript-eslint/no-empty-interface
  
  ¥Inspired from @typescript-eslint/no-empty-interface

如何配置

¥How to configure

1
{
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  "linter": {
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    "rules": {
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      "suspicious": {
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        "noEmptyInterface": "error"
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      }
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    }
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  }
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}

描述

¥Description

禁止声明空接口。

¥Disallow the declaration of empty interfaces.

TypeScript 中的空接口功能很少：任何非空值都可以分配给 {}。使用空接口通常是程序员错误的标志，例如误解 {} 的概念或忘记填写字段。

¥An empty interface in TypeScript does very little: any non-nullable value is assignable to {}. Using an empty interface is often a sign of programmer error, such as misunderstanding the concept of {} or forgetting to fill in fields.

该规则忽略 extends 一种或多种类型的空接口。

¥The rule ignores empty interfaces that extends one or multiple types.

示例

¥Examples

无效

¥Invalid

1
interface A {}

code-block.ts:1:1 lint/suspicious/noEmptyInterface  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ An empty interface is equivalent to {}.
  
  > 1 │ interface A {}
      │ ^^^^^^^^^^^^^^
    2 │ 
  
  ℹ Safe fix: Use a type alias instead.
  
    1   │ - interface·A·{}
      1 │ + type·A·=·{}
    2 2 │

有效

¥Valid

1
interface A {
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  prop: string;
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}
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// Allow empty interfaces that extend a type.
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interface B extends A {}
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// Allow empty interfaces in ambient modules
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declare module "mod" {
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  interface C {}
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}

noEmptyInterface

摘要

如何配置

描述

示例

无效

有效

相关链接