Is react-spinners Safe? A Supply Chain Look at the npm Package

react-spinners is a widely used collection of loading spinner components for React, and as of this writing it ships as a zero-dependency, MIT-licensed package, which makes it one of the lower-risk UI libraries you can pull into a project. That said, "low risk" is not "no risk," and the way most teams add a small helper library like this one is exactly the habit that supply chain attackers count on. This post looks at what react-spinners is and uses it as a lens for vetting any small npm dependency.

What react-spinners actually is

The library, maintained by David Hu (davidhu2000) on GitHub, provides a set of ready-made loading indicators such as ClipLoader, BeatLoader, and BarLoader. Each loader takes a loading boolean and renders nothing when it is false, plus props for color, size, and speed. Usage is about as simple as a React component gets:

import { ClipLoader } from "react-spinners";

function Panel({ isLoading }) {
  return <ClipLoader loading={isLoading} color="#36d7b7" size={40} />;
}

The important detail from a security standpoint is that recent versions were rewritten to have zero runtime dependencies. It relies on React (a peer dependency) and nothing else. That matters because a package with no dependencies has no transitive attack surface to inherit. Most of the danger in the npm ecosystem lives not in the package you chose but in the packages your package chose.

Why a "harmless" spinner library is worth thinking about

It is tempting to install a UI helper without a second thought. But every npm install executes with the privileges of your build environment, and packages can run lifecycle scripts (postinstall, for example) during installation. A benign spinner library today can become a delivery vehicle tomorrow if the maintainer account is compromised, or if you fat-finger the name and install a typosquat.

The npm ecosystem has repeatedly seen popular packages hijacked to inject credential-stealing or crypto-mining code. The attack rarely targets a library because of what it does; it targets it because of how many projects trust it. Reach is the currency. A component you drop into every internal app is precisely the kind of dependency worth an attacker's effort.

None of this is a knock on react-spinners specifically. It is a well-maintained package with a clean profile. The point is that your evaluation process should not depend on the package being famous or looking innocent.

A quick vetting checklist for any small npm package

Before you add react-spinners or anything like it, run through a short mental checklist:

1. Confirm the exact name. Typosquatting thrives on plausible misspellings. Copy the name from the official docs, not from memory or a random blog.
2. Check maintenance signals. Recent releases, an active repository, and a reasonable issue-response cadence suggest someone is watching. An abandoned package is a future takeover target.
3. Read the dependency tree. npm view react-spinners dependencies tells you what else you are actually installing. Zero is ideal; a deep tree deserves scrutiny.
4. Look at the license. react-spinners is MIT, which is permissive and unlikely to cause legal friction, but confirm every dependency's license fits your project's policy.
5. Pin the version and commit the lockfile. A lockfile freezes the exact resolved versions and their integrity hashes so a later republish under the same version range cannot silently swap in different code.

Keeping dependencies safe after install

Vetting once is not enough, because the risk profile of a package changes over time. A version that is clean today can have a CVE disclosed against it next month. Two ongoing practices matter.

First, monitor for newly disclosed vulnerabilities in everything you have installed, including the small stuff. npm audit in CI is the free baseline; a dedicated SCA tool goes further by tracking the full transitive graph and telling you the minimal version bump that clears a finding. An SCA tool such as Safeguard can watch your package-lock.json and alert when a dependency you shipped picks up a known issue. Our software composition analysis page covers how continuous monitoring works.

Second, control how updates land. Automated dependency-bump PRs are useful, but review them; a compromised release is most dangerous the moment it is published and before the community has noticed. Let non-critical bumps sit briefly rather than auto-merging within minutes of publication.

The realistic verdict

react-spinners is a reasonable choice for loading indicators: focused scope, permissive license, and no transitive dependencies to worry about. It is a good example of what a low-risk dependency looks like. Treat that not as permission to stop paying attention, but as the baseline every dependency should meet. If a package you are evaluating cannot match this profile, ask why you need it. For a broader grounding in dependency risk, the Safeguard Academy has approachable material.

FAQ

Is react-spinners safe to use in production?

As of this writing, react-spinners is a well-maintained, MIT-licensed package with zero runtime dependencies, which puts it in the lower-risk tier of npm libraries. As with any dependency, pin the version, commit your lockfile, and monitor for newly disclosed vulnerabilities over time.

Does react-spinners have any dependencies?

Recent versions were rewritten to have zero runtime dependencies. It uses React as a peer dependency and nothing else, which means there is no transitive dependency tree to inherit risk from.

How do I vet a small npm package before installing?

Confirm the exact package name to avoid typosquats, check that it is actively maintained, inspect its dependency tree, verify the license, and pin the version with a committed lockfile. Then monitor it continuously for newly disclosed vulnerabilities.

What license is react-spinners under?

react-spinners is published under the MIT license, a permissive license that is generally compatible with most commercial and open-source projects. Always confirm the licenses of the full dependency chain against your organization's policy.