useNumericSeparators

JavaScript (and super languages)

摘要

¥Summary

规则生效日期：v2.0.0

¥Rule available since: v2.0.0
诊断类别：lint/style/useNumericSeparators

¥Diagnostic Category: lint/style/useNumericSeparators
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/numeric-separators-style 相同
  
  ¥Same as unicorn/numeric-separators-style
- 与 unreadable_literal 相同
  
  ¥Same as unreadable_literal

如何配置

¥How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "style": {
5
        "useNumericSeparators": "error"
6
      }
7
    }
8
  }
9
}

描述

¥Description

强制在数值字面量中使用数字分隔符。

¥Enforce the use of numeric separators in numeric literals.

强制使用数字分隔符对数字进行分组。过长的数字难以阅读，因此使用下划线 (_) 分隔数字组可以提高代码清晰度。此规则还通过检查数字组的大小是否正确来强制执行数字分隔符的正确使用。

¥Enforces a convention of grouping digits using numeric separators. Long numbers can become difficult to read, so separating groups of digits with an underscore (_) improves code clarity. This rule also enforces proper usage of the numeric separator, by checking if the groups of digits are of the correct size.

示例

¥Examples

无效

¥Invalid

1
var a = 1234567890;

code-block.js:1:9 lint/style/useNumericSeparators  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Long numeric literal lacks separators.
  
  > 1 │ var a = 1234567890;
      │         ^^^^^^^^^^
    2 │ 
  
  ℹ Adding separators helps improve readability and clarity for long numbers.
  
  ℹ Safe fix: Add numeric separators.
  
    1   │ - var·a·=·1234567890;
      1 │ + var·a·=·1_234_567_890;
    2 2 │

1
var a = -999_99;

code-block.js:1:10 lint/style/useNumericSeparators  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Inconsistent grouping of digits in numeric literal.
  
  > 1 │ var a = -999_99;
      │          ^^^^^^
    2 │ 
  
  ℹ Numbers with inconsistently placed separators can be misleading or confusing.
  
  ℹ Safe fix: Use consistent numeric separator grouping.
  
    1   │ - var·a·=·-999_99;
      1 │ + var·a·=·-99_999;
    2 2 │

1
var a = 0.1234567;

code-block.js:1:9 lint/style/useNumericSeparators  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Long numeric literal lacks separators.
  
  > 1 │ var a = 0.1234567;
      │         ^^^^^^^^^
    2 │ 
  
  ℹ Adding separators helps improve readability and clarity for long numbers.
  
  ℹ Safe fix: Add numeric separators.
  
    1   │ - var·a·=·0.1234567;
      1 │ + var·a·=·0.123_456_7;
    2 2 │

1
var a = 0b11001100;

code-block.js:1:9 lint/style/useNumericSeparators  FIXABLE  ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ℹ Long numeric literal lacks separators.
  
  > 1 │ var a = 0b11001100;
      │         ^^^^^^^^^^
    2 │ 
  
  ℹ Adding separators helps improve readability and clarity for long numbers.
  
  ℹ Safe fix: Add numeric separators.
  
    1   │ - var·a·=·0b11001100;
      1 │ + var·a·=·0b1100_1100;
    2 2 │

有效

¥Valid

1
var a = 1_234_567_890;

1
var a = -99_999;

1
var a = 0.123_456_7;

1
var a = 0b1100_1100;

useNumericSeparators

摘要

如何配置

描述

示例

无效

有效

相关链接