noPrecisionLoss

JavaScript (and super languages)

摘要

¥Summary

规则生效日期：v1.0.0

¥Rule available since: v1.0.0
诊断类别：lint/correctness/noPrecisionLoss

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

¥This rule is recommended, which means is enabled by default.
此规则没有修复方案。

¥This rule doesn’t have a fix.
此规则的默认严重级别为 error。

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

¥Sources:
- 与 no-loss-of-precision 相同
  
  ¥Same as no-loss-of-precision
- 与 @typescript-eslint/no-loss-of-precision 相同
  
  ¥Same as @typescript-eslint/no-loss-of-precision
- 与 lossy_float_literal 相同
  
  ¥Same as lossy_float_literal

如何配置

¥How to configure

1
{
2
  "linter": {
3
    "rules": {
4
      "correctness": {
5
        "noPrecisionLoss": "error"
6
      }
7
    }
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  }
9
}

描述

¥Description

禁止丢失精度的文字数字

¥Disallow literal numbers that lose precision

示例

¥Examples

无效

¥Invalid

1
const x = 9007199254740993

code-block.js:1:11 lint/correctness/noPrecisionLoss ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This number literal will lose precision at runtime.
  
  > 1 │ const x = 9007199254740993
      │           ^^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ The value at runtime will be 9007199254740992

1
const x = 5.123000000000000000000000000001

code-block.js:1:11 lint/correctness/noPrecisionLoss ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This number literal will lose precision at runtime.
  
  > 1 │ const x = 5.123000000000000000000000000001
      │           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ The value at runtime will be 5.123

1
const x = 0x20000000000001

code-block.js:1:11 lint/correctness/noPrecisionLoss ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This number literal will lose precision at runtime.
  
  > 1 │ const x = 0x20000000000001
      │           ^^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ The value at runtime will be 9007199254740992

1
const x = 0x2_000000000_0001;

code-block.js:1:11 lint/correctness/noPrecisionLoss ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ This number literal will lose precision at runtime.
  
  > 1 │ const x = 0x2_000000000_0001;
      │           ^^^^^^^^^^^^^^^^^^
    2 │ 
  
  ℹ The value at runtime will be 9007199254740992

有效

¥Valid

1
const x = 12345
2
const x = 123.456
3
const x = 123e34
4
const x = 12300000000000000000000000
5
const x = 0x1FFFFFFFFFFFFF
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const x = 9007199254740991
7
const x = 9007_1992547409_91

noPrecisionLoss

摘要

如何配置

描述

示例

无效

有效

相关链接