Skip to content

Bug: [no-unnecessary-type-conversion] Unsafe suggestion: removing bitwise ~~ changes semantics for non-integer numbers #11491

@ziloen

Description

@ziloen

Before You File a Bug Report Please Confirm You Have Done The Following...

  • I have tried restarting my IDE and the issue persists.
  • I have updated to the latest version of the packages.
  • I have searched for related issues and found none that matched my issue.
  • I have read the FAQ and my problem is not listed.

Playground Link

https://typescript-eslint.io/play/#ts=5.9.2&fileType=.tsx&code=MYewdgzgLgBAhjAvDAjABgHQoLACg%2BiSwBGSMAfuXHgPQ0wMwB6qaQA&eslintrc=N4KABGBEBOCuA2BTAzpAXGUEKQAIBcBPABxQGNoBLY-AWhXkoDt8B6Jge1tiacTJTIAhtEK0ipWmQ5MAbomjJKM9FAXQO0SODABfELqA&tsconfig=N4KABGBEDGD2C2AHAlgGwKYCcDyiAuysAdgM6QBcYoEEkJemy0eAcgK6qoDCAFutAGsylBm3TgwAXxCSgA&tokens=false

Repro Code

const a = 1.1
const b = ~~a

ESLint Config

module.exports = {
  parser: "@typescript-eslint/parser",
  rules: {
    "@typescript-eslint/no-unnecessary-type-conversion": "error"
  }
};

tsconfig

Expected Result

No suggestion for ~~ case

Actual Result

The rule reports:

Using ~~ on a number does not change the type or value of the number.

Additional Info

No response

Metadata

Metadata

Assignees

No one assigned

    Labels

    accepting prsGo ahead, send a pull request that resolves this issuebugSomething isn't workingpackage: eslint-pluginIssues related to @typescript-eslint/eslint-plugin

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions