Repository: web-platform-dx/browserslist-config-baseline
Pull request #1: Adds static year files and updates README.md
Author: login: tonypconway
Created: 2025-03-18T12:19:28Z | Merged: 2025-03-18T15:47:39Z



Diff:
diff --git a/2016.js b/2016.js
new file mode 100644
index 0000000..9c0992f
--- /dev/null
+++ b/2016.js
@@ -0,0 +1,9 @@
+module.exports = [
+	"Chrome >= 53",
+	"ChromeAndroid >= 53",
+	"Edge >= 14",
+	"Firefox >= 49",
+	"FirefoxAndroid >= 49",
+	"Safari >= 10",
+	"iOS >= 10"
+]
diff --git a/2017.js b/2017.js
new file mode 100644
index 0000000..46202fc
--- /dev/null
+++ b/2017.js
@@ -0,0 +1,9 @@
+module.exports = [
+	"Chrome >= 62",
+	"ChromeAndroid >= 62",
+	"Edge >= 16",
+	"Firefox >= 53",
+	"FirefoxAndroid >= 57",
+	"Safari >= 11",
+	"iOS >= 11"
+]
diff --git a/2018.js b/2018.js
new file mode 100644
index 0000000..52836a6
--- /dev/null
+++ b/2018.js
@@ -0,0 +1,9 @@
+module.exports = [
+	"Chrome >= 66",
+	"ChromeAndroid >= 66",
+	"Edge >= 18",
+	"Firefox >= 64",
+	"FirefoxAndroid >= 64",
+	"Safari >= 11.1",
+	"iOS >= 11.3"
+]
diff --git a/2019.js b/2019.js
new file mode 100644
index 0000000..1a8e141
--- /dev/null
+++ b/2019.js
@@ -0,0 +1,9 @@
+module.exports = [
+	"Chrome >= 66",
+	"ChromeAndroid >= 66",
+	"Edge >= 18",
+	"Firefox >= 65",
+	"FirefoxAndroid >= 65",
+	"Safari >= 13",
+	"iOS >= 13"
+]
diff --git a/2020.js b/2020.js
new file mode 100644
index 0000000..01325e6
--- /dev/null
+++ b/2020.js
@@ -0,0 +1,9 @@
+module.exports = [
+	"Chrome >= 87",
+	"ChromeAndroid >= 87",
+	"Edge >= 87",
+	"Firefox >= 83",
+	"FirefoxAndroid >= 83",
+	"Safari >= 14",
+	"iOS >= 14"
+]
diff --git a/2021.js b/2021.js
new file mode 100644
index 0000000..3838ae3
--- /dev/null
+++ b/2021.js
@@ -0,0 +1,9 @@
+module.exports = [
+	"Chrome >= 96",
+	"ChromeAndroid >= 96",
+	"Edge >= 96",
+	"Firefox >= 95",
+	"FirefoxAndroid >= 94",
+	"Safari >= 15.2",
+	"iOS >= 15.2"
+]
diff --git a/2022.js b/2022.js
new file mode 100644
index 0000000..0c1919b
--- /dev/null
+++ b/2022.js
@@ -0,0 +1,9 @@
+module.exports = [
+	"Chrome >= 108",
+	"ChromeAndroid >= 108",
+	"Edge >= 108",
+	"Firefox >= 108",
+	"FirefoxAndroid >= 108",
+	"Safari >= 16",
+	"iOS >= 16"
+]
diff --git a/2023.js b/2023.js
new file mode 100644
index 0000000..99e6dbc
--- /dev/null
+++ b/2023.js
@@ -0,0 +1,9 @@
+module.exports = [
+	"Chrome >= 120",
+	"ChromeAndroid >= 120",
+	"Edge >= 120",
+	"Firefox >= 121",
+	"FirefoxAndroid >= 121",
+	"Safari >= 17.2",
+	"iOS >= 17.2"
+]
diff --git a/2024.js b/2024.js
new file mode 100644
index 0000000..cb0af6c
--- /dev/null
+++ b/2024.js
@@ -0,0 +1,9 @@
+module.exports = [
+	"Chrome >= 130",
+	"ChromeAndroid >= 130",
+	"Edge >= 130",
+	"Firefox >= 132",
+	"FirefoxAndroid >= 132",
+	"Safari >= 18.2",
+	"iOS >= 18.2"
+]
diff --git a/LICENSE b/LICENSE
deleted file mode 100644
index 68a49da..0000000
--- a/LICENSE
+++ /dev/null
@@ -1,24 +0,0 @@
-This is free and unencumbered software released into the public domain.
-
-Anyone is free to copy, modify, publish, use, compile, sell, or
-distribute this software, either in source code form or as a compiled
-binary, for any purpose, commercial or non-commercial, and by any
-means.
-
-In jurisdictions that recognize copyright laws, the author or authors
-of this software dedicate any and all copyright interest in the
-software to the public domain. We make this dedication for the benefit
-of the public at large and to the detriment of our heirs and
-successors. We intend this dedication to be an overt act of
-relinquishment in perpetuity of all present and future rights to this
-software under copyright law.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-For more information, please refer to <http://unlicense.org/>
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..261eeb9
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,201 @@
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diff --git a/README.md b/README.md
index a15e5d5..1cce769 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,15 @@
-# <img src="https://unpkg.com/browserslist-config-baseline@0.1.2/assets/icon.svg" height="25"> browserslist-config-baseline
+# <img src="https://unpkg.com/browserslist-config-baseline@0.1.2/assets/icon.svg" height="25" alt="Baseline Widely Available logo"> browserslist-config-baseline
 
-[Browserslist][1] config based on [WebDX Baseline][2] (as seen on MDN).
+A [browserslist](https://www.npmjs.com/package/browserslist) config based on [Web Platform Baseline](https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility).
 
-Baseline identifies web platform features that work across browsers. Baseline
-helps you decide when to use a feature by telling you when it is less likely to
-cause compatibility problems for your site's visitors.
+Baseline identifies web platform features that work across browsers. Baseline helps you decide when to use a feature by telling you when it is less likely to cause compatibility problems for your site's visitors.  There are two ways of targeting a Baseline feature set:
 
-[1]: https://www.npmjs.com/package/browserslist
-[2]: https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility
+1. [Baseline Widely Available](#baseline-widely-available) - includes all features that were fully supported in Chrome, Edge, Firefox and Safari **30 months before the current date**.
+2. [Baseline year feature sets](#baseline-year-feature-sets) - includes all features that were fully supported in Chrome, Edge, Firefox and Safari **at the end of a given calendar year**.
+
+You should check your analytics to see which browser versions are prevalent in your userbase before selecting a Baseline target.
+
+## Baseline Widely Available
 
 <!-- prettier-ignore -->
 ```json
@@ -18,21 +20,78 @@ cause compatibility problems for your site's visitors.
 }
 ```
 
-## Browsers
+> **WARNING:**
+> The default configuration of this module approximates Baseline Widely Available by taking all versions of the core browser set released in the last 2.5 years. However, there will be discrepancies between the real Baseline Widely Available feature set and the minimum browser versions this module returns. The real Baseline Widely Available feature set is supported by one or more versions of the core browser set prior to the 2.5 year cut off. As a result, this module may cause your packager to skip polyfills that you need or fail to highlight improper usage of newer web features. To provide a fully accurate list of browsers compatible with Baseline Widely Available, consider using [`bl2bl`](https://npmjs.org/bl2bl).
+
+## Baseline year feature sets
 
-This config includes versions of
+Baseline year feature sets include all the web platform features that were fully supported in the core browser set at the end of a given calendar year. To use a Baseline year feature set, add the year in the format `/YYYY` to the end of your `extends` statement:
+
+<!-- prettier-ignore -->
+```json
+{
+  "browserslist": [
+    "extends browserslist-config-baseline/2020"
+  ]
+}
+```
+
+This equates to the following `browserslist` config:
+
+```json
+{
+  "browserslist": [
+    "Chrome >= 87",
+    "ChromeAndroid >= 87",
+    "Edge >= 87",
+    "Firefox >= 83",
+    "FirefoxAndroid >= 83",
+    "Safari >= 14",
+    "iOS >= 14"
+  ]
+}
+```
 
-- Apple Safari (iOS)
-- Apple Safari (macOS)
-- Google Chrome (Android)
-- Google Chrome (desktop)
-- Microsoft Edge (desktop)
-- Mozilla Firefox (Android)
-- Mozilla Firefox (desktop)
+The minimum browser versions that support these feature sets are usually the last version released in that year or a few versions earlier. The feature set > browser version mappings in this module were determined using [`baseline-browser-mapping`](https://npmjs.org/baseline-browser-mapping).
+
+## Include Chromium downstream browsers
+
+To include browsers that implement Chromium where possible, insert `/with-downstream` into your statement between the root directory and the year:
+
+<!-- prettier-ignore -->
+```json
+{
+  "browserslist": [
+    "extends browserslist-config-baseline/with-downstream/2020"
+  ]
+}
+```
+
+This equates to the following `browserslist` config:
+
+```json
+{
+  "browserslist": [
+    "Chrome >= 87",
+    "ChromeAndroid >= 87",
+    "Edge >= 87",
+    "Firefox >= 83",
+    "FirefoxAndroid >= 83",
+    "Safari >= 14",
+    "iOS >= 14",
+    "Opera >= 73",
+    "op_mob >= 62",
+    "Samsung >= 14.0",
+    "Android >= 87",
+    "and_uc >= 15.3",
+    "and_qq >= 11.7"
+  ]
+}
+```
 
-released within the last 30 months. This means that all features tagged as
-**widely available** on MDN should be safe to use without any polyfills.
+The minimum browser versions of non-core browsers are provided by `baseline-browser-mapping` based on two sources: [`@mdn/browser-compat-data`](https://npmjs.org/@mdn/browsers-compat-data) where those engine version mappings exist, and parsed user agents from [`useragents.io`](https://useragents.io) where necessary.  For more information on these mappings, please see [`baseline-browser-mapping`'s README](https://www.npmjs.com/package/baseline-browser-mapping#downstream-browsers).
 
 ## See also
 
+- [bl2bl](https://github.com/web-platform-dx/bl2bl) - a command line tool for generating Baseline compliant `browserslist` configurations that are readable in `package.json` and/or `.browserslistrc` files.
 - [WebDX Baseline specification](https://github.com/web-platform-dx/web-features/blob/main/docs/baseline.md)
diff --git a/package.json b/package.json
index 0cb0344..4921b7a 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,8 @@
 {
   "name": "browserslist-config-baseline",
-  "version": "0.1.3",
-  "description": "Browserslist config based on WebDX Baseline (as seen on MDN!)",
-  "license": "Unlicense",
+  "version": "0.2.0",
+  "description": "A browserslist config based on Web Platform Baseline.",
+  "license": "Apache-2.0",
   "author": {
     "name": "Alexnader Pushkov",
     "email": "browserslist-config-baseline@ale.sh"
@@ -10,7 +10,10 @@
   "main": "index.js",
   "repository": {
     "type": "git",
-    "url": "git+https://codeberg.org/notpushkin/browserslist-config-baseline.git"
+    "url": "git+https://github.com/web-platform-dx/browserslist-config-baseline.git"
+  },
+  "bugs": {
+    "url": "https://github.com/web-platform-dx/browserslist-config-baseline/issues"
   },
   "scripts": {
     "test": "node test.mjs"
@@ -18,7 +21,8 @@
   "keywords": [
     "browserslist",
     "browserslist-config",
-    "mozilla"
+    "mozilla",
+    "baseline"
   ],
   "devDependencies": {
     "browserslist": "^4.23.1",
diff --git a/with-downstream/2016.js b/with-downstream/2016.js
new file mode 100644
index 0000000..539c085
--- /dev/null
+++ b/with-downstream/2016.js
@@ -0,0 +1,15 @@
+module.exports = [
+	"Chrome >= 53",
+	"ChromeAndroid >= 53",
+	"Edge >= 14",
+	"Firefox >= 49",
+	"FirefoxAndroid >= 49",
+	"Safari >= 10",
+	"iOS >= 10",
+	"Opera >= 40",
+	"op_mob >= 41",
+	"Samsung >= 10.0",
+	"Android >= 53",
+	"and_uc >= 11.6",
+	"and_qq >= 8.1"
+]
diff --git a/with-downstream/2017.js b/with-downstream/2017.js
new file mode 100644
index 0000000..ae37b26
--- /dev/null
+++ b/with-downstream/2017.js
@@ -0,0 +1,15 @@
+module.exports = [
+	"Chrome >= 62",
+	"ChromeAndroid >= 62",
+	"Edge >= 16",
+	"Firefox >= 53",
+	"FirefoxAndroid >= 57",
+	"Safari >= 11",
+	"iOS >= 11",
+	"Opera >= 49",
+	"op_mob >= 46",
+	"Samsung >= 10.0",
+	"Android >= 62",
+	"and_uc >= 13.3",
+	"and_qq >= 9.6"
+]
diff --git a/with-downstream/2018.js b/with-downstream/2018.js
new file mode 100644
index 0000000..b454f63
--- /dev/null
+++ b/with-downstream/2018.js
@@ -0,0 +1,15 @@
+module.exports = [
+	"Chrome >= 66",
+	"ChromeAndroid >= 66",
+	"Edge >= 18",
+	"Firefox >= 64",
+	"FirefoxAndroid >= 64",
+	"Safari >= 11.1",
+	"iOS >= 11.3",
+	"Opera >= 53",
+	"op_mob >= 47",
+	"Samsung >= 10.0",
+	"Android >= 66",
+	"and_uc >= 13.3",
+	"and_qq >= 9.6"
+]
diff --git a/with-downstream/2019.js b/with-downstream/2019.js
new file mode 100644
index 0000000..6e5e838
--- /dev/null
+++ b/with-downstream/2019.js
@@ -0,0 +1,15 @@
+module.exports = [
+	"Chrome >= 66",
+	"ChromeAndroid >= 66",
+	"Edge >= 18",
+	"Firefox >= 65",
+	"FirefoxAndroid >= 65",
+	"Safari >= 13",
+	"iOS >= 13",
+	"Opera >= 53",
+	"op_mob >= 47",
+	"Samsung >= 10.0",
+	"Android >= 66",
+	"and_uc >= 13.3",
+	"and_qq >= 9.6"
+]
diff --git a/with-downstream/2020.js b/with-downstream/2020.js
new file mode 100644
index 0000000..01d2ad9
--- /dev/null
+++ b/with-downstream/2020.js
@@ -0,0 +1,15 @@
+module.exports = [
+	"Chrome >= 87",
+	"ChromeAndroid >= 87",
+	"Edge >= 87",
+	"Firefox >= 83",
+	"FirefoxAndroid >= 83",
+	"Safari >= 14",
+	"iOS >= 14",
+	"Opera >= 73",
+	"op_mob >= 62",
+	"Samsung >= 14.0",
+	"Android >= 87",
+	"and_uc >= 15.3",
+	"and_qq >= 11.7"
+]
diff --git a/with-downstream/2021.js b/with-downstream/2021.js
new file mode 100644
index 0000000..72ab1d1
--- /dev/null
+++ b/with-downstream/2021.js
@@ -0,0 +1,15 @@
+module.exports = [
+	"Chrome >= 96",
+	"ChromeAndroid >= 96",
+	"Edge >= 96",
+	"Firefox >= 95",
+	"FirefoxAndroid >= 94",
+	"Safari >= 15.2",
+	"iOS >= 15.2",
+	"Opera >= 82",
+	"op_mob >= 67",
+	"Samsung >= 17.0",
+	"Android >= 96",
+	"and_uc >= 15.3",
+	"and_qq >= 13.4"
+]
diff --git a/with-downstream/2022.js b/with-downstream/2022.js
new file mode 100644
index 0000000..bfa654e
--- /dev/null
+++ b/with-downstream/2022.js
@@ -0,0 +1,14 @@
+module.exports = [
+	"Chrome >= 108",
+	"ChromeAndroid >= 108",
+	"Edge >= 108",
+	"Firefox >= 108",
+	"FirefoxAndroid >= 108",
+	"Safari >= 16",
+	"iOS >= 16",
+	"Opera >= 94",
+	"op_mob >= 73",
+	"Samsung >= 21.0",
+	"Android >= 108",
+	"and_qq >= 14.2"
+]
diff --git a/with-downstream/2023.js b/with-downstream/2023.js
new file mode 100644
index 0000000..f423828
--- /dev/null
+++ b/with-downstream/2023.js
@@ -0,0 +1,13 @@
+module.exports = [
+	"Chrome >= 120",
+	"ChromeAndroid >= 120",
+	"Edge >= 120",
+	"Firefox >= 121",
+	"FirefoxAndroid >= 121",
+	"Safari >= 17.2",
+	"iOS >= 17.2",
+	"Opera >= 106",
+	"op_mob >= 80",
+	"Samsung >= 25.0",
+	"Android >= 120"
+]
diff --git a/with-downstream/2024.js b/with-downstream/2024.js
new file mode 100644
index 0000000..50c88ac
--- /dev/null
+++ b/with-downstream/2024.js
@@ -0,0 +1,12 @@
+module.exports = [
+	"Chrome >= 130",
+	"ChromeAndroid >= 130",
+	"Edge >= 130",
+	"Firefox >= 132",
+	"FirefoxAndroid >= 132",
+	"Safari >= 18.2",
+	"iOS >= 18.2",
+	"Opera >= 115",
+	"op_mob >= 86",
+	"Android >= 130"
+]


Reviews:
user: login: notpushkin
state: COMMENTED
author_association: COLLABORATOR
submitted_at: 2025-03-18T15:29:41Z
user: login: tonypconway
state: COMMENTED
author_association: COLLABORATOR
submitted_at: 2025-03-18T15:37:42Z
user: login: notpushkin
state: COMMENTED
author_association: COLLABORATOR
submitted_at: 2025-03-18T15:39:38Z
user: login: notpushkin
body: Feel free to merge when you’re ready! I’ll publish this release manually for now, and we can set up GitHub Actions for the next one.
state: APPROVED
author_association: COLLABORATOR
submitted_at: 2025-03-18T15:41:34Z

Review comments:
diff_hunk: @@ -18,21 +20,78 @@ cause compatibility problems for your site's visitors.
 }
 ```
 
-## Browsers
+> **WARNING:**
+> The default configuration of this module approximates Baseline Widely Available by taking all versions of the core browser set released in the last 2.5 years. However, there will be discrepancies between the real Baseline Widely Available feature set and the minimum browser versions this module returns. The real Baseline Widely Available feature set is supported by one or more versions of the core browser set prior to the 2.5 year cut off. As a result, this module may cause your packager to skip polyfills that you need or fail to highlight improper usage of newer web features. To provide a fully accurate list of browsers compatible with Baseline Widely Available, consider using [`bl2bl`](https://npmjs.org/bl2bl).
path: README.md
user: login: notpushkin
body: It’s an important point, but **WARNING** seems a bit too strong here?

> [!IMPORTANT]  
> Also, we might be able to [use an admonition](https://github.com/orgs/community/discussions/16925) like this (though we’ll need to check if it renders on npm first).


created_at: 2025-03-18T15:25:13Z
author_association: COLLABORATOR
diff_hunk: @@ -1,7 +1,7 @@
 {
   "name": "browserslist-config-baseline",
-  "version": "0.1.3",
-  "description": "Browserslist config based on WebDX Baseline (as seen on MDN!)",
+  "version": "0.2.0",
+  "description": "A browserslist config based on Web Platform Baseline.",
   "license": "Unlicense",
path: package.json
user: login: notpushkin
body: ```suggestion
  "license": "Apache-2.0",
```
created_at: 2025-03-18T15:26:02Z
author_association: COLLABORATOR
diff_hunk: @@ -1,13 +1,15 @@
-# <img src="https://unpkg.com/browserslist-config-baseline@0.1.2/assets/icon.svg" height="25"> browserslist-config-baseline
+# <img src="https://unpkg.com/browserslist-config-baseline@0.1.2/assets/icon.svg" height="25" alt="Baseline Widely Available logo"> browserslist-config-baseline
 
-[Browserslist][1] config based on [WebDX Baseline][2] (as seen on MDN).
+A [browserslist](https://www.npmjs.com/package/browserslist) config based on [Web Platform Baseline](https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility).
 
-Baseline identifies web platform features that work across browsers. Baseline
-helps you decide when to use a feature by telling you when it is less likely to
-cause compatibility problems for your site's visitors.
+Baseline identifies web platform features that work across browsers. Baseline helps you decide when to use a feature by telling you when it is less likely to cause compatibility problems for your site's visitors.  There are two ways of targeting a Baseline feature set:
 
-[1]: https://www.npmjs.com/package/browserslist
-[2]: https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility
+1. [Baseline Widely Available](#baseline-widely-available) - includes all features that were fully supported in Chrome, Edge, Firefox and Safari **30 months before the current data**.
path: README.md
user: login: notpushkin
body: Did you mean “current date”?

```suggestion
1. [Baseline Widely Available](#baseline-widely-available) - includes all features that were fully supported in Chrome, Edge, Firefox and Safari **30 months before the current date**.
```
created_at: 2025-03-18T15:27:56Z
author_association: COLLABORATOR
diff_hunk: @@ -18,21 +20,78 @@ cause compatibility problems for your site's visitors.
 }
 ```
 
-## Browsers
+> **WARNING:**
+> The default configuration of this module approximates Baseline Widely Available by taking all versions of the core browser set released in the last 2.5 years. However, there will be discrepancies between the real Baseline Widely Available feature set and the minimum browser versions this module returns. The real Baseline Widely Available feature set is supported by one or more versions of the core browser set prior to the 2.5 year cut off. As a result, this module may cause your packager to skip polyfills that you need or fail to highlight improper usage of newer web features. To provide a fully accurate list of browsers compatible with Baseline Widely Available, consider using [`bl2bl`](https://npmjs.org/bl2bl).
path: README.md
user: login: tonypconway
body: I'm not planning for this to stay here too long, as my next set of changes will auto-update the `index.js` files to specific versions whenever there's a change.  At that point, I'll change this to an **IMPORTANT** and change the text to explain that you should update the module frequently if you're using Widely Available.  But at the moment, the logic gives you an unexpected output and could cause big compatibility problems if folks are accidentally using APIs that are going to break for some subset of their users.

Those lovely GitHub formatted admonitions don't render properly on NPM, unfortunately.  See, for example the various callouts here: https://www.npmjs.com/package/baseline-browser-mapping 
created_at: 2025-03-18T15:37:42Z
author_association: COLLABORATOR
diff_hunk: @@ -18,21 +20,78 @@ cause compatibility problems for your site's visitors.
 }
 ```
 
-## Browsers
+> **WARNING:**
+> The default configuration of this module approximates Baseline Widely Available by taking all versions of the core browser set released in the last 2.5 years. However, there will be discrepancies between the real Baseline Widely Available feature set and the minimum browser versions this module returns. The real Baseline Widely Available feature set is supported by one or more versions of the core browser set prior to the 2.5 year cut off. As a result, this module may cause your packager to skip polyfills that you need or fail to highlight improper usage of newer web features. To provide a fully accurate list of browsers compatible with Baseline Widely Available, consider using [`bl2bl`](https://npmjs.org/bl2bl).
path: README.md
user: login: notpushkin
body: That’s a bummer! Let’s go with your variant for now then, yeah.
created_at: 2025-03-18T15:39:38Z
author_association: COLLABORATOR

PR comments:
user: login: tonypconway
created_at: 2025-03-18T12:27:13Z
body: Hey @notpushkin I've created this as a PR so you can see the changes before I merge.  This adds static year config files and versions that include downstream Chromium browsers that are currently available in [`baseline-browser-mapping`](https://github.com/web-platform-dx/baseline-browser-mapping).

Let me know if you have any objections or suggested changes to this as it exists.  Next on my to-do list are:
* Create a script that automatically updates the `index.js` files that return Widely Available so that they are updated whenever the minimum Widely Available versions change.
* Set up a GitHub action that executes that script and then auto-publishes if there are changes.
* Add some logic to those files that give a console warning if the user is using an old version of the package so that people don't end up out of date/forget to include `npm i browserslist-config-baseline@latest` in their build scripts.
author_association: COLLABORATOR
user: login: tonypconway
created_at: 2025-03-18T14:14:53Z
body: @notpushkin FYI, I've swapped the license to Apache-2.0 because I (and I imagine others contributing on behalf of software companies) can't work on public domain projects.  It's also the license used for all the other web-platform-dx repositories, so it keeps things harmonious on that front.  LMK if you have any strong objections to that.
author_association: COLLABORATOR
user: login: notpushkin
created_at: 2025-03-18T15:22:12Z
body: @tonypconway Apache-2.0 is fine by me! I didn’t feel like the initial implementation was copyrightable, so I went with the simplest option :-) But given other WebDX projects are Apache-licensed, it only makes sense to stay consistent.

I’ll take a look at the changes in a moment!
author_association: COLLABORATOR
user: login: tonypconway
created_at: 2025-03-18T15:44:23Z
body: Thanks @notpushkin , merging now!
author_association: COLLABORATOR
user: login: tonypconway
created_at: 2025-03-19T11:04:27Z
body: FYI - I've added a [draft release note](https://github.com/web-platform-dx/browserslist-config-baseline/releases/tag/untagged-e89d8a54faa168ec9a3e) that we can turn on once you've published.  I'm happy to do it myself as I have access now.

Also FYI, we'll need to turn off 2FA auth on the NPM package for GitHub to be able to publish automatically, which we'll want to do to keep Widely Available configs up to date.  Let me know if you have any major concerns there.
author_association: COLLABORATOR
user: login: notpushkin
created_at: 2025-03-19T12:20:47Z
body: @tonypconway Sorry – couldn’t find my phone yesterday! I’ve just published it now: https://www.npmjs.com/package/browserslist-config-baseline/v/0.2.0

> Also FYI, we'll need to turn off 2FA auth on the NPM package for GitHub to be able to publish automatically

I’ve set it to “Require two-factor authentication or an automation or granular access token”, which I believe should be enough to do releases from CI? (I’ve just created a granular token, will try to set up GitHub Actions now – unless you’re on it already :-)

---

I’ve [tweaked](https://github.com/web-platform-dx/browserslist-config-baseline/releases/edit/untagged-9416983debf989ef8e5f) release notes a bit to match style of other projects in this org and make wording a bit simpler. If everything looks okay, you can release it.

(Re: Baseline year feature sets – I’ve reworded it as “yearly Baseline” which sounds less formal, but if it is the official term we can use that.)

author_association: COLLABORATOR