useNumberNamespace

JavaScript (and super languages)

摘要

¥Summary

规则生效日期：v1.5.0

¥Rule available since: v1.5.0
诊断类别：lint/style/useNumberNamespace

¥Diagnostic Category: lint/style/useNumberNamespace
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 information。

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

¥Sources:
- 与 unicorn/prefer-number-properties 相同
  
  ¥Same as unicorn/prefer-number-properties

如何配置

¥How to configure

1
{
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  "linter": {
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    "rules": {
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      "style": {
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        "useNumberNamespace": "error"
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      }
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    }
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  }
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}

描述

¥Description

使用 Number 属性而不是全局属性。

¥Use the Number properties instead of global ones.

ES2015 将一些全局变量移入 Number 属性以保持一致性。

¥ES2015 moved some globals into the Number properties for consistency.

该规则不报告全局变量 isFinite 和 isNaN，因为它们的行为与相应的 Number 的属性 Number.isFinite 和 Number.isNaN 略有不同。你可以使用专用规则 noGlobalIsFinite 和 noGlobalIsNan 强制使用 Number.isFinite 和 Number.isNaN。

¥The rule doesn’t report the globals isFinite and isNaN because they have a slightly different behavior to their corresponding Number’s properties Number.isFinite and Number.isNaN. You can use the dedicated rules noGlobalIsFinite and noGlobalIsNan to enforce the use of Number.isFinite and Number.isNaN.

示例

¥Examples

无效

¥Invalid

1
parseInt("1"); // true

code-block.js:1:1 lint/style/useNumberNamespace  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Use Number.parseInt instead of the equivalent global.
  
  > 1 │ parseInt(“1”); // true
      │ ^^^^^^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.parseInt instead.
  
    1   │ - parseInt(“1”);·//·true
      1 │ + Number.parseInt(“1”);·//·true
    2 2 │

1
parseFloat("1.1"); // true

code-block.js:1:1 lint/style/useNumberNamespace  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Use Number.parseFloat instead of the equivalent global.
  
  > 1 │ parseFloat(“1.1”); // true
      │ ^^^^^^^^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.parseFloat instead.
  
    1   │ - parseFloat(“1.1”);·//·true
      1 │ + Number.parseFloat(“1.1”);·//·true
    2 2 │

1
NaN; // true

code-block.js:1:1 lint/style/useNumberNamespace  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Use Number.NaN instead of the equivalent global.
  
  > 1 │ NaN; // true
      │ ^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.NaN instead.
  
    1   │ - NaN;·//·true
      1 │ + Number.NaN;·//·true
    2 2 │

1
Infinity; // true

code-block.js:1:1 lint/style/useNumberNamespace  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Use Number.POSITIVE_INFINITY instead of the equivalent global.
  
  > 1 │ Infinity; // true
      │ ^^^^^^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.POSITIVE_INFINITY instead.
  
    1   │ - Infinity;·//·true
      1 │ + Number.POSITIVE_INFINITY;·//·true
    2 2 │

1
-Infinity; // true

code-block.js:1:2 lint/style/useNumberNamespace  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Use Number.NEGATIVE_INFINITY instead of the equivalent global.
  
  > 1 │ -Infinity; // true
      │  ^^^^^^^^
    2 │ 
  
  ℹ ES2015 moved some globals into the Number namespace for consistency.
  
  ℹ Safe fix: Use Number.NEGATIVE_INFINITY instead.
  
    1   │ - -Infinity;·//·true
      1 │ + Number.NEGATIVE_INFINITY;·//·true
    2 2 │

有效

¥Valid

1
Number.parseInt("1"); // false

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Number.parseFloat("1.1"); // false

1
Number.NaN; // false

1
Number.POSITIVE_INFINITY; // false

1
Number.NEGATIVE_INFINITY; // false

useNumberNamespace

摘要

如何配置

描述

示例

无效

有效

相关链接