polymer

Polymer•PUBLIC

View on GitHub

Our original Web Component library.

BSD 3-Clause "New" or "Revised" License

Created on Aug 23, 2012

Updated on Apr 9, 2026

Stars

22.1k

Forks

2.0k

Watchers

22.1k

Open Issues

83

Repository Health Score

💚

100/100

Excellent

Overall repository health assessment

Score Breakdown

Activity

Active development - updated this week

30/30

100%

Issues Analytics

35

Total Issues

All time

24

Open

69% of total

11

Closed

Recent Commits

Add release instructions based on what dfreedm and I figured out. (#5743)

Peter Burns•1 year ago

26171d3View on GitHub

3.5.2

Peter Burns•1 year ago

3d7e778View on GitHub

Hack package-lock

Peter Burns•1 year ago

443aadbView on GitHub

Bump version back so that np can be the one to bump the version.

Peter Burns•1 year ago

cc635c1View on GitHub

Correct public date.

Peter Burns•1 year ago

ba58ae0View on GitHub

Update version numbers.

Peter Burns•1 year ago

810b3fbView on GitHub

Prepare to release v3.5.2

Peter Burns•1 year ago

076cb57View on GitHub

Fix an accidentally quadratic reduce(concat) in FlattenedNodesObserver (#5739)

Peter Burns•1 year ago

3c2f759View on GitHub

[ci skip] update changelog

Russell Bicknell•3 years ago

1e8b246View on GitHub

3.5.1

Russell Bicknell•3 years ago

2a853c9View on GitHub

[ci skip] bump to 3.5.1

Russell Bicknell•3 years ago

2cbb3d2View on GitHub

Merge pull request #5701 from Polymer/trusted-types-reflected-boolean-properties

Russell Bicknell•3 years ago

c829815View on GitHub

`_valueToNodeAttribute` converts the empty string to `trustedTypes.emptyScript` before setting, if available.

Russell Bicknell•3 years ago

d69041cView on GitHub

Adds Trusted Types support for reflected boolean properties.

Russell Bicknell•3 years ago

ce474dbView on GitHub

[ci skip] update changelog

Russell Bicknell•3 years ago

76e77b6View on GitHub

View all commits

Community

22,051 stars, 1,977 forks

30/30

100%

Documentation

Has description, wiki, license

20/20

100%

Maintenance

0.4% issue ratio

20/20

100%

Health score is calculated based on activity, community engagement, documentation quality, and maintenance practices

Languages

HTML

63.2%

JavaScript

36.7%

Shell

0.1%

CSS

0.0%

Dependencies27 total

1

Production

26

Development

Production Dependencies (1)

@webcomponents/shadycss^1.9.1

Development Dependencies (26)

@polymer/gen-closure-declarations^0.5.0

@polymer/iron-component-page^3.0.0-pre.12

Top Contributors

1

kevinpschaaf

User

1.5k

commits

2

dfreedm

User

1.2k

commits

3

sorvell

User

799

commits

4

frankiefu

User

214

commits

5

TimvdLippe

User

145

commits

6

rictic

User

117

commits

7

aomarks

User

116

commits

8

bicknellr

User

87

commits

9

jsoref

User

59

commits

10

ebidel

User

42

commits

Languages

HTML

63.2%

JavaScript

36.7%

Shell

0.1%

CSS

0.0%

Issues Analytics

35

Total Issues

All time

24

Open

69% of total

11

Closed

Dependencies27 total

1

Production

26

Development

Production Dependencies (1)

@webcomponents/shadycss^1.9.1

Development Dependencies (26)

@polymer/gen-closure-declarations^0.5.0

@polymer/iron-component-page^3.0.0-pre.12

@polymer/test-fixture^3.0.0-pre.12

@webcomponents/webcomponentsjs^2.2.10

babel-eslint^7.2.3

babel-preset-minify^0.2.0

del^3.0.0

dom5^3.0.1

eslint-plugin-html^4.0.6

fs-extra^5.0.0

google-closure-compiler^20180204.0.0

gulp^4.0.2

gulp-babel^6.1.2

gulp-eslint^4.0.0

gulp-if^2.0.1

gulp-replace^0.6.1

gulp-size^3.0.0

gulp-vulcanize^7.0.0

lazypipe^1.0.2

merge-stream^1.0.1

parse5^4.0.0

polymer-build^3.1.4

polymer-cli^1.9.9

through2^2.0.0

typescript^2.9.2

wct-browser-legacy^1.0.2

@polymer/polymerv3.5.2

31% of total

2mo

Avg Close Time

Avg response

Issues Activity: Last 6 months

Top Labels

Hottest Issues

1

#5648 Add TrustedTypes support

6

2

closed

2

#5678 Polymer cannot be used with Skypack

wontfix

2

5

open

3

#5674 Polymer Gestures: Left mouse button "Up" event not firing after right mouse button click.

5

open

4

#5651 [TypeScript] Possible breakage of LegacyElementMixin type definition with the release of 3.4.0 (No problem on 3.3.1)

p03.xtypescript

5

#5699 Stamp a new release of Polymer + elements with improved trusted type support

4

closed

4

1

closed

Recent Commits

Add release instructions based on what dfreedm and I figured out. (#5743)

Peter Burns•1 year ago

26171d3View on GitHub

3.5.2

Peter Burns•1 year ago

3d7e778View on GitHub

Hack package-lock

Peter Burns•1 year ago

443aadbView on GitHub

Bump version back so that np can be the one to bump the version.

Peter Burns•1 year ago

cc635c1View on GitHub

Correct public date.

Peter Burns•1 year ago

ba58ae0View on GitHub

Update version numbers.

Peter Burns•1 year ago

810b3fbView on GitHub

Prepare to release v3.5.2

Peter Burns•1 year ago

076cb57View on GitHub

Fix an accidentally quadratic reduce(concat) in FlattenedNodesObserver (#5739)

Peter Burns•1 year ago

3c2f759View on GitHub

[ci skip] update changelog

Russell Bicknell•3 years ago

1e8b246View on GitHub

3.5.1

Russell Bicknell•3 years ago

2a853c9View on GitHub

[ci skip] bump to 3.5.1

Russell Bicknell•3 years ago

2cbb3d2View on GitHub

Merge pull request #5701 from Polymer/trusted-types-reflected-boolean-properties

Russell Bicknell•3 years ago

c829815View on GitHub

`_valueToNodeAttribute` converts the empty string to `trustedTypes.emptyScript` before setting, if available.

Russell Bicknell•3 years ago

d69041cView on GitHub

Adds Trusted Types support for reflected boolean properties.

Russell Bicknell•3 years ago

ce474dbView on GitHub

[ci skip] update changelog

Russell Bicknell•3 years ago

76e77b6View on GitHub

View all commits

Top Contributors

1

kevinpschaaf

User

1.5k

commits

2

dfreedm

User

1.2k

commits

3

sorvell

User

799

commits

4

frankiefu

User

214

commits

5

TimvdLippe

User

145

commits

6

rictic

User

117

commits

7

aomarks

User

116

commits

8

bicknellr

User

87

commits

9

jsoref

User

59

commits

10

ebidel

User

42

commits

GitHub Explorer

polymer

Score Breakdown

Production Dependencies (1)

Development Dependencies (26)

Production Dependencies (1)

Development Dependencies (26)

Issues Activity: Last 6 months

Top Labels

Hottest Issues