babel-preset-es2016 — Greenflagged

Babel preset for all es2016 plugins.

Supply chain provenance

Status for the latest visible version.

No SLSA provenance npm registry signatures No source commit

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

amasadhzoojmmloganfsmythsebmckthejameskyle

Accepted risks

Findings the reviewer chose to accept rather than block on.

Source	Rule	Reason	Accepted by	When
source-diff	source-size-tripled	AI (source-diff): Tiny absolute payload; ratio inflation from near-zero baseline is not meaningful for this package.	ai	2026/05/22
bogus-package	bogus-package	AI (bogus-package): Legitimate Babel ecosystem preset; low-value signals are false positives for this well-known package.	ai	2026/05/22
provenance	missing-githead	AI (provenance): Missing gitHead is consistent with 2016-era npm publish workflows before gitHead was standard; no security implication for this package.	ai	2026/04/24
provenance	publisher-changed	AI (provenance): hzoo (Henry Zhu) is a core Babel maintainer; the 2016 transition from ysmood to hzoo is a legitimate org handoff within the Babel project, not a compromise.	ai	2026/04/24
maintainer-change	maintainer-added	AI (maintainer-change): hzoo is a well-known Babel core maintainer; addition is a legitimate org transition, not a suspicious takeover.	ai	2026/04/24
phantom-deps	phantom-dep:babel-plugin-transform-exponentiation-operator	AI (phantom-deps): This dep is the sole declared dependency and is used in the preset config (index.js). The phantom-dep flag is a false positive for Babel preset config-style usage.	ai	2026/04/24

Versions (showing 14 of 14)

Version	Deps	Published
6.24.1	1 / 0	2017-04-07
6.11.3	1 / 0	2016-07-13
6.11.0	1 / 0	2016-06-27
6.0.11	22 / 0	2016-04-05
6.0.10	26 / 0	2016-04-01
6.0.9	24 / 0	2016-03-28
6.0.8	23 / 0	2016-03-25
6.0.7	21 / 0	2016-03-25
6.0.6	23 / 0	2016-03-09
6.0.5	23 / 0	2016-03-09
6.0.4	23 / 0	2016-03-09
6.0.3	23 / 0	2016-03-09
6.0.2	22 / 0	2016-03-09
6.0.1	21 / 0	2016-03-08

v6.24.1

2 findings

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

INFO Missing gitHead — previous versions had it provenance

[Accepted risk] This version has no gitHead field linking it to a source commit, but previous versions did. This suggests the publish environment changed. Published by: hzoo.

v6.11.3

3 findings

HIGH Missing gitHead — previous versions had it provenance

This version has no gitHead field linking it to a source commit, but previous versions did. This suggests the publish environment changed. Published by: hzoo.

HIGH Publisher changed: ysmood → hzoo (on 2016-07-13) provenance

This version was published by a different npm account than previous versions on 2016-07-13. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.11.0

3 findings

HIGH Missing gitHead — previous versions had it provenance

This version has no gitHead field linking it to a source commit, but previous versions did. This suggests the publish environment changed. Published by: hzoo.

HIGH Publisher changed: ysmood → hzoo (on 2016-06-27) provenance

This version was published by a different npm account than previous versions on 2016-06-27. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.11

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.10

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.9

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.8

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.7

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.6

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.5

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.4

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.3

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.2

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v6.0.1

1 finding

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.