webextension-polyfill 0.3.1

A lightweight polyfill library for Promise-based WebExtension APIs in Chrome.

webextension-polyfill@0.3.1 was published on 2018-08-21. 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.

All webextension-polyfill versions · Permanent reference to 0.3.1 · Latest release

Package specifications

Version0.3.1
License declarationMPL-2.0
Published2018-08-21T10:09:37.669Z
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 size176.61 KiB
Published file count7
Package typeNot declared
ES module entryNot declared
Default entrydist/browser-polyfill.js
Side effects declarationNot declared
Direct advisories0
Resolved graph dependencies0
Repository stars3066
Repository forks235

Install webextension-polyfill 0.3.1

npm install webextension-polyfill@0.3.1
pnpm add webextension-polyfill@0.3.1
yarn add webextension-polyfill@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.

    Dangerous-Workflow10/10 — no dangerous workflow patterns detected
    Token-Permissions0/10 — detected GitHub workflow tokens with excessive permissions
    Code-Review5/10 — Found 4/8 approved changesets -- score normalized to 5
    Maintained0/10 — project is archived
    CII-Best-Practices0/10 — no effort to earn an OpenSSF best practices badge detected
    Binary-Artifacts10/10 — no binaries found in the repo
    Pinned-Dependencies10/10 — all dependencies are pinned
    Security-Policy0/10 — security policy file not detected
    License10/10 — license file detected
    Fuzzing0/10 — project is not fuzzed
    SAST8/10 — SAST tool is not run on all commits -- score normalized to 8

    Evidence and freshness