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unicorn/no-unnecessary-slice-end Pedantic

🛠️ An auto-fix is available for this rule.

What it does

Disallows unnecessarily passing a second argument to slice(...), for cases where it would not change the result.

Why is this bad?

When using .slice(...) without a second argument, the second argument defaults to the object's length. As such, passing the length explicitly

• or using Infinity - is unnecessary.

Examples

Examples of incorrect code for this rule:

const foo = string.slice(1, string.length);
const foo = string.slice(1, Infinity);
const foo = string.slice(1, Number.POSITIVE_INFINITY);

Examples of correct code for this rule:

const foo = string.slice(1);

How to use

To enable this rule using the config file or in the CLI, you can use:

Config (.oxlintrc.json)

{
  "rules": {
    "unicorn/no-unnecessary-slice-end": "error"
  }
}

CLI

oxlint --deny unicorn/no-unnecessary-slice-end

References

• Rule Source