core-js 0.3.1

Standard library

core-js@0.3.1 was published on 2014-12-23. Its manifest declares 0 runtime dependencies and 0 peer requirements. Bundled type declarations are not declared in the inspected metadata. No Node.js engine requirement is declared in this manifest.

Deprecated: core-js@<3.23.3 is no longer maintained and not recommended for usage due to the number of issues. Because of the V8 engine whims, feature detection in old core-js versions could cause a slowdown up to 100x even if nothing is polyfilled. Some versions have web compatibility issues. Please, upgrade your dependencies to the actual version of core-js.

All core-js versions · Permanent reference to 0.3.1 · Latest release

Package specifications

Version0.3.1
License declarationNot declared
Published2014-12-23T12:52:54.979Z
Node.js requirementNot declared
Type declarationsNot declared
Runtime dependency count0
Peer requirement count0
Optional dependency count0
Minified sizeMeasurement not available yet
Minified + gzipMeasurement not available yet
Unpacked distribution sizeNot supplied
Published file countNot supplied
Package typeNot declared
ES module entryNot declared
Default entryindex.js
Side effects declarationNot declared
Direct advisories0
Resolved graph dependencies0
Repository stars25525
Repository forks1678

Install core-js 0.3.1

npm install core-js@0.3.1
pnpm add core-js@0.3.1
yarn add core-js@0.3.1

Runtime dependencies

  • None declared

Peer requirements

  • None declared

Optional dependencies

  • None declared

Resolved dependency graph

This deps.dev graph describes a generic 64-bit Linux environment, not your application lockfile.

    How to interpret the specifications

    Bundlephobia measurements use its standard package build and may exclude peer dependencies. Unpacked npm distribution size includes shipped files and is a different measurement. Module declarations do not prove tree-shaking or runtime compatibility.

    Advisories apply to this package version directly; transitive dependencies need separate inspection. Repository signals describe the whole repository and are current observations, including on historical-version pages.

    OpenSSF repository checks

    Provider assessment: 2026-08-24T00:00:00Z. These are repository checks, not a jsL maintenance score.

    Maintained10/10 — 30 commit(s) and 2 issue activity found in the last 90 days -- score normalized to 10
    Dangerous-Workflow10/10 — no dangerous workflow patterns detected
    Code-Review0/10 — Found 2/29 approved changesets -- score normalized to 0
    CII-Best-Practices0/10 — no effort to earn an OpenSSF best practices badge detected
    Security-Policy10/10 — security policy file detected
    Token-Permissions0/10 — detected GitHub workflow tokens with excessive permissions
    License10/10 — license file detected
    Pinned-Dependencies0/10 — dependency not pinned by hash detected -- score normalized to 0
    Binary-Artifacts10/10 — no binaries found in the repo
    SAST0/10 — SAST tool is not run on all commits -- score normalized to 0
    Fuzzing0/10 — project is not fuzzed

    Evidence and freshness