es6-shim MIT 90 versions

es6-shim

npm Repository Homepage

ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines

90

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

paulmillrljharb

Keywords

ecmascriptharmonyes6shimpromisepromisessetPrototypeOfmapset__proto__

Accepted risks

Findings the reviewer chose to accept rather than block on.

Source	Rule	Reason	Accepted by	When
source-diff	obfuscated-file:coverage/prettify.js	AI (source-diff): coverage/prettify.js is the standard Google Code Prettify syntax highlighter included in nyc/Istanbul HTML coverage reports — a well-known minified library, not malicious code.	ai	2026/04/24
semgrep	semgrep:new-function-constructor	AI (semgrep): new Function('return this;') is a standard polyfill pattern for obtaining the global object in strict mode; intentional and safe in this ES6 shim context.	ai	2026/04/24

Versions (showing 90 of 90)

Version	Deps	Published
0.35.8	0 / 18	2023-03-23
0.35.7	0 / 18	2022-12-24
0.35.6	0 / 16	2020-10-15
0.35.5	0 / 14	2019-03-08
0.35.4	0 / 16	2018-10-30
0.35.3	0 / 15	2017-01-24
0.35.2	0 / 15	2016-12-04
0.35.1	0 / 15	2016-05-12
0.35.0	0 / 15	2016-03-01
0.34.4	0 / 15	2016-02-09
0.34.3	0 / 15	2016-02-09
0.34.2	0 / 15	2016-01-23
0.34.1	0 / 15	2016-01-05
0.34.0	0 / 15	2015-12-15
0.33.13	0 / 15	2015-11-13
0.33.12	0 / 15	2015-11-11
0.33.11	0 / 15	2015-11-10
0.33.10	0 / 15	2015-11-02
0.33.9	0 / 13	2015-10-29
0.33.8	0 / 13	2015-10-23
0.33.7	0 / 13	2015-10-23
0.33.6	0 / 13	2015-09-29
0.33.5	0 / 13	2015-09-28
0.33.4	0 / 13	2015-09-28
0.33.3	0 / 12	2015-08-31
0.33.2	0 / 12	2015-08-26
0.33.1	0 / 12	2015-08-20
0.33.0	0 / 12	2015-07-31
0.32.2	0 / 12	2015-06-17
0.32.1	0 / 12	2015-06-14
0.32.0	0 / 12	2015-06-07
0.31.3	0 / 12	2015-06-02
0.31.2	0 / 12	2015-05-09
0.31.1	0 / 12	2015-05-07
0.31.0	0 / 12	2015-05-01
0.30.0	0 / 12	2015-04-27
0.29.0	0 / 12	2015-04-26
0.28.1	0 / 12	2015-04-12
0.27.1	0 / 12	2015-03-05
0.26.1	0 / 12	2015-02-25
0.26.0	0 / 12	2015-02-24
0.25.3	0 / 12	2015-02-22
0.25.2	0 / 12	2015-02-18
0.25.1	0 / 12	2015-02-18
0.25.0	0 / 12	2015-02-16
0.24.0	0 / 12	2015-02-05
0.23.0	0 / 12	2015-01-26
0.22.2	0 / 12	2015-01-05
0.22.1	0 / 12	2014-12-13
0.22.0	0 / 12	2014-12-12
0.21.1	0 / 12	2014-12-05
0.21.0	0 / 12	2014-11-21
0.20.4	0 / 12	2014-11-20
0.20.3	0 / 12	2014-11-19
0.20.2	0 / 12	2014-10-29
0.20.1	0 / 12	2014-10-28
0.20.0	0 / 12	2014-10-27
0.19.2	0 / 12	2014-10-26
0.19.1	0 / 11	2014-10-20
0.19.0	0 / 11	2014-10-20
0.18.0	0 / 11	2014-09-07
0.17.0	0 / 7	2014-08-31
0.16.0	0 / 7	2014-08-07
0.15.1	0 / 7	2014-08-06
0.15.0	0 / 7	2014-07-31
0.14.0	0 / 7	2014-07-21
0.13.0	0 / 6	2014-06-12
0.12.0	0 / 6	2014-06-04
0.11.1	0 / 6	2014-06-02
0.11.0	0 / 5	2014-05-12
0.10.1	0 / 5	2014-03-14
0.10.0	0 / 5	2014-03-01
0.9.3	0 / 3	2014-02-06
0.9.2	0 / 3	2013-12-18
0.9.1	0 / 3	2013-10-28
0.9.0	0 / 3	2013-08-30
0.8.0	0 / 3	2013-06-08
0.7.0	0 / 2	2013-04-02
0.6.0	0 / 2	2013-01-15
0.5.3	0 / 2	2012-09-02
0.5.2	0 / 2	2012-06-17
0.5.1	0 / 2	2012-06-14
0.5.0	0 / 2	2012-06-12
0.4.1	0 / 2	2012-05-11
0.4.0	0 / 2	2012-02-08
0.3.1	0 / 2	2012-01-29
0.3.0	0 / 2	2012-01-27
0.2.1	0 / 2	2012-01-07
0.2.0	0 / 2	2011-12-25
0.1.0	0 / 2	2011-12-25

v0.35.8

1 finding

LOW No provenance attestation provenance

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

v0.35.7

2 findings

HIGH New obfuscated file: coverage/prettify.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

LOW No provenance attestation provenance

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

v0.35.6

1 finding

LOW No provenance attestation provenance

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

v0.35.5

1 finding

LOW No provenance attestation provenance

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

v0.35.4

1 finding

LOW No provenance attestation provenance

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

v0.35.3

1 finding

LOW No provenance attestation provenance

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

v0.35.2

1 finding

LOW No provenance attestation provenance

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

v0.35.1

1 finding

LOW No provenance attestation provenance

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

v0.35.0

1 finding

LOW No provenance attestation provenance

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

v0.34.4

1 finding

LOW No provenance attestation provenance

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

v0.34.3

1 finding

LOW No provenance attestation provenance

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

v0.34.2

1 finding

LOW No provenance attestation provenance

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

v0.34.1

1 finding

LOW No provenance attestation provenance

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

v0.34.0

1 finding

LOW No provenance attestation provenance

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

v0.33.13

1 finding

LOW No provenance attestation provenance

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

v0.33.12

1 finding

LOW No provenance attestation provenance

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

v0.33.11

1 finding

LOW No provenance attestation provenance

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

v0.33.10

1 finding

LOW No provenance attestation provenance

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

v0.33.9

1 finding

LOW No provenance attestation provenance

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

v0.33.8

1 finding

LOW No provenance attestation provenance

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

v0.33.7

1 finding

LOW No provenance attestation provenance

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

v0.33.6

1 finding

LOW No provenance attestation provenance

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

v0.33.5

1 finding

LOW No provenance attestation provenance

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

v0.33.4

1 finding

LOW No provenance attestation provenance

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

v0.33.3

1 finding

LOW No provenance attestation provenance

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

v0.33.2

1 finding

LOW No provenance attestation provenance

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

v0.33.1

1 finding

LOW No provenance attestation provenance

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

v0.33.0

1 finding

LOW No provenance attestation provenance

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

v0.32.2

1 finding

LOW No provenance attestation provenance

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

v0.32.1

1 finding

LOW No provenance attestation provenance

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

v0.32.0

1 finding

LOW No provenance attestation provenance

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

v0.31.3

1 finding

LOW No provenance attestation provenance

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

v0.31.2

1 finding

LOW No provenance attestation provenance

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

v0.31.1

1 finding

LOW No provenance attestation provenance

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

v0.31.0

1 finding

LOW No provenance attestation provenance

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

v0.30.0

1 finding

LOW No provenance attestation provenance

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

v0.29.0

1 finding

LOW No provenance attestation provenance

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

v0.28.1

1 finding

LOW No provenance attestation provenance

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

v0.27.1

1 finding

LOW No provenance attestation provenance

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

v0.26.1

1 finding

LOW No provenance attestation provenance

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

v0.26.0

1 finding

LOW No provenance attestation provenance

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

v0.25.3

1 finding

LOW No provenance attestation provenance

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

v0.25.2

1 finding

LOW No provenance attestation provenance

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

v0.25.1

1 finding

LOW No provenance attestation provenance

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

v0.25.0

1 finding

LOW No provenance attestation provenance

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

v0.24.0

1 finding

LOW No provenance attestation provenance

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

v0.23.0

1 finding

LOW No provenance attestation provenance

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

v0.22.2

1 finding

LOW No provenance attestation provenance

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

v0.22.1

1 finding

LOW No provenance attestation provenance

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

v0.22.0

1 finding

LOW No provenance attestation provenance

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

v0.21.1

1 finding

LOW No provenance attestation provenance

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

v0.21.0

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.

v0.20.4

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.

v0.20.3

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.

v0.20.2

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.

v0.20.1

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.

v0.20.0

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.

v0.19.2

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.

v0.19.1

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.

v0.19.0

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.

v0.18.0

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.

v0.17.0

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.

v0.16.0

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.

v0.15.1

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.

v0.15.0

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.

v0.14.0

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.

v0.13.0

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.

v0.12.0

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.

v0.11.1

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.

v0.11.0

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.

v0.10.1

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.

v0.10.0

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.

v0.9.3

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.

v0.9.2

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.

v0.9.1

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.

v0.9.0

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.

v0.8.0

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.

v0.7.0

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.

v0.6.0

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.

v0.5.3

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.

v0.5.2

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.

v0.5.1

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.

v0.5.0

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.

v0.4.1

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.

v0.4.0

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.

v0.3.1

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.

v0.3.0

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.

v0.2.1

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.

v0.2.0

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.

v0.1.0

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.