noPrecisionLoss

诊断类别：lint/correctness/noPrecisionLoss

¥Diagnostic Category: lint/correctness/noPrecisionLoss

JavaScript (and super languages)

自从：v1.0.0

¥Since: v1.0.0

来源：

¥Sources:

与以下相同：no-loss-of-precision

¥Same as: no-loss-of-precision
与以下相同：@typescript-eslint/no-loss-of-precision

¥Same as: @typescript-eslint/no-loss-of-precision
与以下相同：lossy_float_literal

¥Same as: lossy_float_literal

禁止丢失精度的文字数字

¥Disallow literal numbers that lose precision

示例

¥Examples

无效

¥Invalid

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

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

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

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

const x = 12345
const x = 123.456
const x = 123e34
const x = 12300000000000000000000000
const x = 0x1FFFFFFFFFFFFF
const x = 9007199254740991
const x = 9007_1992547409_91

noPrecisionLoss

示例

无效

有效

相关链接