well-known-symbols
An ESnext spec-compliant shim/polyfill/replacement for all Well-Known Symbols that works in any environment with Symbols.
5
Versions
MIT
License
No
Install Scripts
Missing
Provenance
Supply chain provenance
Status for the latest visible version.
No SLSA provenance
npm registry signatures
gitHead linked
Without SLSA provenance there is no cryptographic link between this tarball and the public source — the axios compromise (March 2026) relied on exactly this gap.
Maintainers
ljharbnovemberborn
Keywords
javascriptecmascriptpolyfillshimwell-knownsymbolSymbol.asyncIteratorasyncIteratorSymbol.hasInstancehasInstanceSymbol.isConcatSpreadableisConcatSpreadableSymbol.iteratoriteratorSymbol.matchmatchSymbol.matchAllmatchAllSymbol.replacereplaceSymbol.searchsearchSymbol.speciesspeciesSymbol.splitsplitSymbol.toPrimitivetoPrimitiveSymbol.toStringTagtoStringTagSymbol.unscopablesunscopables
Accepted risks
Findings the reviewer chose to accept rather than block on.
| Source | Rule | Reason | Accepted by | When |
|---|---|---|---|---|
| dependencies | unvetted-dep:get-intrinsic | AI (dependencies): get-intrinsic is a standard ljharb/es-shims ecosystem dependency used across many polyfill packages; no security concern for this publisher. | ai |
Versions (showing 5 of 5)
| Version | Deps | Published |
|---|---|---|
| 4.1.0 | 2 / 14 | |
| 4.0.0 | 2 / 14 | |
| 3.0.0 | 0 / 4 | |
| 2.0.0 | 0 / 4 | |
| 1.0.0 | 0 / 4 |
v2.0.0
1 finding
LOW
No provenance attestation
provenance
Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.
v1.0.0
1 finding
LOW
No provenance attestation
provenance
Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.