noPrecisionLoss
Diagnostic Category: lint/correctness/noPrecisionLoss
Since: v1.0.0
Sources:
- Same as:
no-loss-of-precision - Same as:
@typescript-eslint/no-loss-of-precision - Same as:
lossy_float_literal
Description
Section titled DescriptionDisallow literal numbers that lose precision
Examples
Section titled ExamplesInvalid
Section titled Invalidconst x = 9007199254740993code-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 = 5.123000000000000000000000000001code-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 = 0x20000000000001code-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
Valid
Section titled Validconst x = 12345const x = 123.456const x = 123e34const x = 12300000000000000000000000const x = 0x1FFFFFFFFFFFFFconst x = 9007199254740991const x = 9007_1992547409_91How to configure
Section titled How to configure{ "linter": { "rules": { "correctness": { "noPrecisionLoss": "error" } } }}