Use MDN data to generate :autofill support data #86

lukewarlow · 2021-10-13T21:06:51Z

This uses MDN's browser compat data npm package to get the support data for the :autofill Pseudo class.

This is required because caniuse won't add entries that are duplicated with MDN. And autoprefixer requires the data to generate a prefix see postcss/autoprefixer#626.

Not exactly sure on the exact output format required but so far I've got this JSON being generated.

lukewarlow · 2021-10-13T21:10:46Z

If this MR gets merged updating the browser compat data package will need to be part of the steps for generating up-to-date data.

This approach could also be used to add support data for :file-selector-button pseudo element to caniuse-lite, which will allow autoprefixer to remove it's hardcoded data.

ai · 2021-10-13T21:11:59Z

Task to do:

Auto-update @mdn/browser-compat-data in updater script. We can do it only on new caniuse-db release.
Save autofill data in a same format as caniuse-db was encoded. So we can ready it by Autoprefixer in a same way.

lukewarlow · 2021-10-13T21:13:33Z

Are there utils I should look at which are used for generating the tiny output data? If so I'm happy to get this so it's generating JSON in the right format and putting it thought that util to minify it.

check.js

ai · 2021-10-13T21:16:38Z

Are there utils I should look at which are used for generating the tiny output data?

Here is the packer code https://github.com/browserslist/caniuse-lite/blob/main/src/packer/feature.js

You can find usage somewhere in updater script.

lukewarlow · 2021-10-13T21:42:50Z

Managed to get this as the output format so far. Which looks largely correct. Will take a look at running it through the utils tomorrow to see what the packed output looks like.

{
   "title":":autofill CSS pseudo-class",
   "spec":"https://html.spec.whatwg.org/multipage/semantics-other.html#selector-autofill",
   "stats":{
      "chrome":{
         "1":"n",
         "2":"n",
         "3":"n",
         "4":"n",
         "5":"n",
         "6":"n",
         "7":"n",
         "8":"n",
         "9":"n",
         "10":"n",
         "11":"n",
         "12":"n",
         "13":"n",
         "14":"n",
         "15":"n",
         "16":"n",
         "17":"n",
         "18":"n",
         "19":"n",
         "20":"n",
         "21":"n",
         "22":"n",
         "23":"n",
         "24":"n",
         "25":"n",
         "26":"n",
         "27":"n",
         "28":"n",
         "29":"n",
         "30":"n",
         "31":"n",
         "32":"n",
         "33":"n",
         "34":"n",
         "35":"n",
         "36":"n",
         "37":"n",
         "38":"n",
         "39":"n",
         "40":"n",
         "41":"n",
         "42":"n",
         "43":"n",
         "44":"n",
         "45":"n",
         "46":"n",
         "47":"n",
         "48":"n",
         "49":"n",
         "50":"n",
         "51":"n",
         "52":"n",
         "53":"n",
         "54":"n",
         "55":"n",
         "56":"n",
         "57":"n",
         "58":"n",
         "59":"n",
         "60":"n",
         "61":"n",
         "62":"n",
         "63":"n",
         "64":"n",
         "65":"n",
         "66":"n",
         "67":"n",
         "68":"n",
         "69":"n",
         "70":"n",
         "71":"n",
         "72":"n",
         "73":"n",
         "74":"n",
         "75":"n",
         "76":"n",
         "77":"n",
         "78":"n",
         "79":"n",
         "80":"n",
         "81":"n",
         "83":"n",
         "84":"n",
         "85":"n",
         "86":"n",
         "87":"n",
         "88":"n",
         "89":"n",
         "90":"n",
         "91":"n",
         "92":"n",
         "93":"n",
         "94":"n",
         "95":"n",
         "96":"n"
      },
      "and_chr":{
         "18":"n",
         "25":"n",
         "26":"n",
         "27":"n",
         "28":"n",
         "29":"n",
         "30":"n",
         "31":"n",
         "32":"n",
         "33":"n",
         "34":"n",
         "35":"n",
         "36":"n",
         "37":"n",
         "38":"n",
         "39":"n",
         "40":"n",
         "41":"n",
         "42":"n",
         "43":"n",
         "44":"n",
         "45":"n",
         "46":"n",
         "47":"n",
         "48":"n",
         "49":"n",
         "50":"n",
         "51":"n",
         "52":"n",
         "53":"n",
         "54":"n",
         "55":"n",
         "56":"n",
         "57":"n",
         "58":"n",
         "59":"n",
         "60":"n",
         "61":"n",
         "62":"n",
         "63":"n",
         "64":"n",
         "65":"n",
         "66":"n",
         "67":"n",
         "68":"n",
         "69":"n",
         "70":"n",
         "71":"n",
         "72":"n",
         "73":"n",
         "74":"n",
         "75":"n",
         "76":"n",
         "77":"n",
         "78":"n",
         "79":"n",
         "80":"n",
         "81":"n",
         "83":"n",
         "84":"n",
         "85":"n",
         "86":"n",
         "87":"n",
         "88":"n",
         "89":"n",
         "90":"n",
         "91":"n",
         "92":"n",
         "93":"n",
         "94":"n",
         "95":"n",
         "96":"n"
      },
      "edge":{
         "12":"n",
         "13":"n",
         "14":"n",
         "15":"n",
         "16":"n",
         "17":"n",
         "18":"n",
         "79":"n",
         "80":"n",
         "81":"n",
         "83":"n",
         "84":"n",
         "85":"n",
         "86":"n",
         "87":"n",
         "88":"n",
         "89":"n",
         "90":"n",
         "91":"n",
         "92":"n",
         "93":"n",
         "94":"n",
         "95":"n",
         "96":"n"
      },
      "firefox":{
         "1":"n",
         "2":"n",
         "3":"n",
         "4":"n",
         "5":"n",
         "6":"n",
         "7":"n",
         "8":"n",
         "9":"n",
         "10":"n",
         "11":"n",
         "12":"n",
         "13":"n",
         "14":"n",
         "15":"n",
         "16":"n",
         "17":"n",
         "18":"n",
         "19":"n",
         "20":"n",
         "21":"n",
         "22":"n",
         "23":"n",
         "24":"n",
         "25":"n",
         "26":"n",
         "27":"n",
         "28":"n",
         "29":"n",
         "30":"n",
         "31":"n",
         "32":"n",
         "33":"n",
         "34":"n",
         "35":"n",
         "36":"n",
         "37":"n",
         "38":"n",
         "39":"n",
         "40":"n",
         "41":"n",
         "42":"n",
         "43":"n",
         "44":"n",
         "45":"n",
         "46":"n",
         "47":"n",
         "48":"n",
         "49":"n",
         "50":"n",
         "51":"n",
         "52":"n",
         "53":"n",
         "54":"n",
         "55":"n",
         "56":"n",
         "57":"n",
         "58":"n",
         "59":"n",
         "60":"n",
         "61":"n",
         "62":"n",
         "63":"n",
         "64":"n",
         "65":"n",
         "66":"n",
         "67":"n",
         "68":"n",
         "69":"n",
         "70":"n",
         "71":"n",
         "72":"n",
         "73":"n",
         "74":"n",
         "75":"n",
         "76":"n",
         "77":"n",
         "78":"n",
         "79":"n",
         "80":"n",
         "81":"n",
         "82":"n",
         "83":"n",
         "84":"n",
         "85":"n",
         "86":"y",
         "87":"y",
         "88":"y",
         "89":"y",
         "90":"y",
         "91":"y",
         "92":"y",
         "93":"y",
         "94":"y",
         "95":"y",
         "96":"y",
         "97":"y",
         "98":"y",
         "1.5":"n",
         "3.5":"n",
         "3.6":"n"
      },
      "and_ff":{
         "4":"n",
         "5":"n",
         "6":"n",
         "7":"n",
         "8":"n",
         "9":"n",
         "10":"n",
         "14":"n",
         "15":"n",
         "16":"n",
         "17":"n",
         "18":"n",
         "19":"n",
         "20":"n",
         "21":"n",
         "22":"n",
         "23":"n",
         "24":"n",
         "25":"n",
         "26":"n",
         "27":"n",
         "28":"n",
         "29":"n",
         "30":"n",
         "31":"n",
         "32":"n",
         "33":"n",
         "34":"n",
         "35":"n",
         "36":"n",
         "37":"n",
         "38":"n",
         "39":"n",
         "40":"n",
         "41":"n",
         "42":"n",
         "43":"n",
         "44":"n",
         "45":"n",
         "46":"n",
         "47":"n",
         "48":"n",
         "49":"n",
         "50":"n",
         "51":"n",
         "52":"n",
         "53":"n",
         "54":"n",
         "55":"n",
         "56":"n",
         "57":"n",
         "58":"n",
         "59":"n",
         "60":"n",
         "61":"n",
         "62":"n",
         "63":"n",
         "64":"n",
         "65":"n",
         "66":"n",
         "67":"n",
         "68":"n",
         "79":"n",
         "80":"n",
         "81":"n",
         "82":"n",
         "83":"n",
         "84":"n",
         "85":"n",
         "86":"y",
         "87":"y",
         "88":"y",
         "89":"y",
         "90":"y",
         "91":"y",
         "92":"y",
         "93":"y",
         "94":"y",
         "95":"y",
         "96":"y",
         "97":"y",
         "98":"y"
      },
      "ie":{
         "1":"n",
         "2":"n",
         "3":"n",
         "4":"n",
         "5":"n",
         "6":"n",
         "7":"n",
         "8":"n",
         "9":"n",
         "10":"n",
         "11":"n",
         "5.5":"n"
      },
      "opera":{
         "2":"n",
         "3":"n",
         "4":"n",
         "5":"n",
         "6":"n",
         "7":"n",
         "8":"n",
         "9":"n",
         "10":"n",
         "11":"n",
         "12":"n",
         "15":"n",
         "16":"n",
         "17":"n",
         "18":"n",
         "19":"n",
         "20":"n",
         "21":"n",
         "22":"n",
         "23":"n",
         "24":"n",
         "25":"n",
         "26":"n",
         "27":"n",
         "28":"n",
         "29":"n",
         "30":"n",
         "31":"n",
         "32":"n",
         "33":"n",
         "34":"n",
         "35":"n",
         "36":"n",
         "37":"n",
         "38":"n",
         "39":"n",
         "40":"n",
         "41":"n",
         "42":"n",
         "43":"n",
         "44":"n",
         "45":"n",
         "46":"n",
         "47":"n",
         "48":"n",
         "49":"n",
         "50":"n",
         "51":"n",
         "52":"n",
         "53":"n",
         "54":"n",
         "55":"n",
         "56":"n",
         "57":"n",
         "58":"n",
         "60":"n",
         "62":"n",
         "63":"n",
         "64":"n",
         "65":"n",
         "66":"n",
         "67":"n",
         "68":"n",
         "69":"n",
         "70":"n",
         "71":"n",
         "72":"n",
         "73":"n",
         "74":"n",
         "75":"n",
         "76":"n",
         "77":"n",
         "78":"n",
         "79":"n",
         "80":"n",
         "81":"n",
         "3.5":"n",
         "3.6":"n",
         "5.1":"n",
         "7.1":"n",
         "7.2":"n",
         "7.5":"n",
         "8.5":"n",
         "9.1":"n",
         "9.2":"n",
         "9.5":"n",
         "9.6":"n",
         "10.1":"n",
         "10.5":"n",
         "10.6":"n",
         "11.1":"n",
         "11.5":"n",
         "11.6":"n",
         "12.1":"n"
      },
      "op_mob":{
         "11":"n",
         "12":"n",
         "14":"n",
         "15":"n",
         "16":"n",
         "18":"n",
         "19":"n",
         "20":"n",
         "21":"n",
         "22":"n",
         "24":"n",
         "25":"n",
         "26":"n",
         "27":"n",
         "28":"n",
         "29":"n",
         "30":"n",
         "32":"n",
         "33":"n",
         "34":"n",
         "35":"n",
         "36":"n",
         "37":"n",
         "41":"n",
         "42":"n",
         "43":"n",
         "44":"n",
         "45":"n",
         "46":"n",
         "47":"n",
         "48":"n",
         "49":"n",
         "50":"n",
         "51":"n",
         "52":"n",
         "53":"n",
         "54":"n",
         "55":"n",
         "56":"n",
         "57":"n",
         "58":"n",
         "59":"n",
         "60":"n",
         "61":"n",
         "62":"n",
         "63":"n",
         "64":"n",
         "10.1":"n",
         "11.1":"n",
         "11.5":"n",
         "12.1":"n"
      },
      "safari":{
         "1":"n",
         "2":"n",
         "3":"n",
         "4":"n",
         "5":"n",
         "6":"n",
         "7":"n",
         "8":"n",
         "9":"n",
         "10":"n",
         "11":"n",
         "12":"n",
         "13":"n",
         "14":"n",
         "15":"n",
         "1.1":"n",
         "1.2":"n",
         "1.3":"n",
         "3.1":"n",
         "5.1":"n",
         "6.1":"n",
         "9.1":"n",
         "10.1":"n",
         "11.1":"n",
         "12.1":"n",
         "13.1":"n",
         "14.1":"n",
         "15.1":"n"
      },
      "ios_saf":{
         "1":"n",
         "2":"n",
         "3":"n",
         "4":"n",
         "5":"n",
         "6":"n",
         "7":"n",
         "8":"n",
         "9":"n",
         "10":"n",
         "11":"n",
         "12":"n",
         "13":"n",
         "14":"n",
         "15":"n",
         "3.2":"n",
         "4.2":"n",
         "6.1":"n",
         "9.3":"n",
         "10.3":"n",
         "11.3":"n",
         "12.2":"n",
         "13.4":"n",
         "14.5":"n"
      },
      "samsung":{
         "1.0":"n",
         "1.5":"n",
         "1.6":"n",
         "2.0":"n",
         "2.1":"n",
         "3.0":"n",
         "3.2":"n",
         "4.0":"n",
         "4.2":"n",
         "5.0":"n",
         "5.2":"n",
         "5.4":"n",
         "6.0":"n",
         "6.2":"n",
         "6.4":"n",
         "7.0":"n",
         "7.2":"n",
         "7.4":"n",
         "8.0":"n",
         "8.2":"n",
         "9.0":"n",
         "9.2":"n",
         "9.4":"n",
         "10.0":"n",
         "10.2":"n",
         "11.0":"n",
         "11.2":"n",
         "12.0":"n",
         "12.1":"n",
         "13.0":"n",
         "13.2":"n",
         "14.0":"n",
         "14.2":"n",
         "15.0":"n",
         "16.0":"n"
      },
      "android":{
         "1":"n",
         "2":"n",
         "3":"n",
         "4":"n",
         "37":"n",
         "38":"n",
         "39":"n",
         "40":"n",
         "41":"n",
         "42":"n",
         "43":"n",
         "44":"n",
         "45":"n",
         "46":"n",
         "47":"n",
         "48":"n",
         "49":"n",
         "50":"n",
         "51":"n",
         "52":"n",
         "53":"n",
         "54":"n",
         "55":"n",
         "56":"n",
         "57":"n",
         "58":"n",
         "59":"n",
         "60":"n",
         "61":"n",
         "62":"n",
         "63":"n",
         "64":"n",
         "65":"n",
         "66":"n",
         "67":"n",
         "68":"n",
         "69":"n",
         "70":"n",
         "71":"n",
         "72":"n",
         "73":"n",
         "74":"n",
         "75":"n",
         "76":"n",
         "77":"n",
         "78":"n",
         "79":"n",
         "80":"n",
         "81":"n",
         "83":"n",
         "84":"n",
         "85":"n",
         "86":"n",
         "87":"n",
         "88":"n",
         "89":"n",
         "90":"n",
         "91":"n",
         "92":"n",
         "93":"n",
         "94":"n",
         "95":"n",
         "96":"n",
         "1.5":"n",
         "2.2":"n",
         "4.4":"n",
         "4.4.3":"n"
      }
   }
}

lukewarlow · 2021-10-14T17:08:13Z

I've got it "working" I think I'm not sure on next steps and how best to test it

ai · 2021-10-14T17:14:13Z

Next steps:

Move code from check.js to copy-mdn.js
Call copy-mdn.js before Pack Can I Use data in .github/workflows/check.yml
Try to update @mdn/browser-compat-data in Yarn lockfile during .github/workflows/check.yml before calling copy-mdn.js

.github/workflows/check.yml

check-mdn-bcd.js

.github/workflows/check.yml

ai · 2021-10-17T18:03:05Z

copy-mdn.js

+      let supported = browserData.version_added
+      supported &&= browserData.version_added !== 'preview'
+      supported &&= parseFloat(version) >= parseFloat(browserData.version_added)
+      supported &&= !browserData.prefix


Do we need to add x postfix to result.stats[bcdBrowserToCanIUseBrowser(browser)][version] when we need prefix?

You can find these one-letter codes description here https://github.com/Fyrd/caniuse/blob/main/CONTRIBUTING.md

I'm not familiar with the caniuse data format, potentially yes?

Using Autofill as an example this is what the MDN data looks like. So if an x on the end denotes a similar thing in caniuse that would make sense to add.

Yeap, for Chrome 96 we need "y x" value.

Autoprefixer inserts prefix only if string contain / x($|\s)/

So I've changed the code to make it so if the support statement has a version_added entry and a prefix entry it will add the x otherwise it won't.

So in the above example it should generate "n x" for all chrome versions up to and including Chrome 95, but for 96 onwards it will generate "y". Which I think is correct behaviour? If we need to handle situations where both prefix and unprefix is supported that will require changing the processing code?

Will have a read and update accordingly

I've updated the code to handle these more complicated scenarios as well as some edge cases that can occur in MDN data such as "range" values (e.g. ≤18) and true for version_added, and the version_removed column for if a feature is no longer supported.

Thank you very much for your guidance on this btw!

Looks good. Can you show the current output after decompressing?

https://gist.github.com/lukewarlow/2ecfb7c525ce00de1add3488ced6d93b - this is the contents of the json file that gets written to disc.

Let me know if you meant after it had been packed.

…aniuse has a new version.

.github/workflows/check.yml

Add x to data if prefix

Update code to select the entry for arrays based on the browser version in the array. This handles prefix support upto a certain version and full support after that. Previously, the data would be not supported until fully supported. Handle version_added being a range value or true. Handle version_removed having a value.

ai · 2021-10-17T19:53:45Z

data/features/css-autofill.js

@@ -0,0 +1 @@
+module.exports={A:{D:{"33":"0 1 2 3 4 5 6 7 8 9 undefined lB cB I e J E F G A B C K L D M N O f g h i j k l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T U V W X Y Z a b c R d H fB pB"},L:{"33":"0 1 2 3 4 5 6 7 8 9 O l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T U V W X Y Z a b c R d H fB pB"},B:{"33":"P Q T U V W X Y Z a b c R d H fB pB","34":"C K L D M N O"},C:{"1":"X Y Z a b c R d H fB pB qB","2":"0 1 2 3 4 5 6 7 8 9 undefined lB cB I e J E F G A B C K L D M N O f g h i j k l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T mB U V W nB oB"},M:{"1":"X Y Z a b c R d H fB pB qB undefined","2":"0 1 2 3 4 5 6 7 8 9 I e J E F G A L D M N O f g h i j k l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB P Q T mB U V W"},A:{"2":"undefined lB cB I e J E F G A B kB"},F:{"33":"0 1 2 3 4 5 6 7 8 9 D M N O f g h i j k l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB JB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T","34":"lB cB I e J E F G A B C nB oB sB uB undefined vB ZC hB 1B 2B aB iB 3B bB"},K:{"33":"1 2 3 4 5 6 7 8 9 L D M O f g h i k l m n o p q s t u v w x AB BB CB DB EB FB GB HB IB dB JB eB KB LB S","34":"B C hB aB iB bB"},E:{"33":"undefined cB I e J E F G A B C K L D rB sB tB vB hB aB bB wB xB","34":"lB"},G:{"33":"undefined lB cB I e J E F G A B C K L D gB tB AC CC"},P:{"33":"undefined OC gB YC ZC bC bB cC IC dC eC"},I:{"33":"0 1 2 3 4 5 6 7 8 9 undefined lB cB I x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T U V W X Y Z a b c R d H fB pB PC SC"}},B:NaN,C:":autofill CSS pseudo-class"};


Strange that we have undefined in the packed array and NaN.

Seems like we are doing something wrong.

I am not very familiar with packager code, but you can try to put console.log or debugger to https://github.com/browserslist/caniuse-lite/blob/main/src/packer/feature.js#L80

and to https://github.com/browserslist/caniuse-lite/blob/main/src/packer/feature.js#L99

One of the error could created by this line https://gist.github.com/lukewarlow/65d234b378e57b9153421b6ba65da188#file-output-js-L669

I believe the NaN is caused by the lack of a "status" value in the caniuse formatted data. It's rather hard to determine the status of the spec for an MDN entry because it only has a spec_url and a standards_track boolean value. I wouldn't be able to map those to statuses without making some assumptions probably. I'd be curious to know what caniuse treats WICG URLs as too.

We can use status: "other"

So the undefined I think is coming from a mismatch between browser versions in MDN and browser versions in caniuse.

We can generate u (for unknown) for there versions. Or try to copy versions more precise.

The mdn data should now only generate an entry for a version where the version matches a caniuse version. And should have a status of other

lukewarlow · 2021-10-17T19:56:44Z

https://gist.github.com/lukewarlow/65d234b378e57b9153421b6ba65da188 - this is the data converted, packed, and then unpacked.

… version

ai · 2021-10-17T20:42:05Z

Merged. Now let’s wait for the next caniuse-db release.

ai · 2021-10-20T09:22:31Z

Released in caniuse-lite@1.0.30001270

Use MDN data to generate :autofill support data

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lukewarlow mentioned this pull request Oct 13, 2021

autofill not being prefixed postcss/autoprefixer#626

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Handle situation where only a preview entry exists

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Update output format

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lukewarlow added 2 commits October 13, 2021 23:01

Add some comments and refactor code

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Write to json file in caniuse folder so it gets processed

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lukewarlow mentioned this pull request Oct 14, 2021

Add support for prefixing :autofill postcss/autoprefixer#1430

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lukewarlow marked this pull request as ready for review October 14, 2021 17:08

lukewarlow added 2 commits October 14, 2021 18:22

Move code to copy-mdn.js

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Check for new mdn bcd package version

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Throw on major version bump for BCD package

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Fix file called from check.yml

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ai reviewed Oct 17, 2021

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Remove mdn output check from install step and only run MDN check if c…

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…aniuse has a new version.

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lukewarlow added 3 commits October 17, 2021 19:11

Only copy mdn data if there's a new caniuse version.

4386719

Add x to data if prefix

Correct handling of range values

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Commit updated packed version

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ai reviewed Oct 17, 2021

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Only generate data when MDN browser version matches a caniuse browser…

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… version

ai merged commit 350629d into browserslist:main Oct 17, 2021

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Use MDN data to generate :autofill support data #86

Use MDN data to generate :autofill support data #86

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		@@ -0,0 +1 @@
		module.exports={A:{D:{"33":"0 1 2 3 4 5 6 7 8 9 undefined lB cB I e J E F G A B C K L D M N O f g h i j k l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T U V W X Y Z a b c R d H fB pB"},L:{"33":"0 1 2 3 4 5 6 7 8 9 O l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T U V W X Y Z a b c R d H fB pB"},B:{"33":"P Q T U V W X Y Z a b c R d H fB pB","34":"C K L D M N O"},C:{"1":"X Y Z a b c R d H fB pB qB","2":"0 1 2 3 4 5 6 7 8 9 undefined lB cB I e J E F G A B C K L D M N O f g h i j k l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T mB U V W nB oB"},M:{"1":"X Y Z a b c R d H fB pB qB undefined","2":"0 1 2 3 4 5 6 7 8 9 I e J E F G A L D M N O f g h i j k l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB P Q T mB U V W"},A:{"2":"undefined lB cB I e J E F G A B kB"},F:{"33":"0 1 2 3 4 5 6 7 8 9 D M N O f g h i j k l m n o p q r s t u v w x y z AB BB CB DB EB FB GB HB IB JB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T","34":"lB cB I e J E F G A B C nB oB sB uB undefined vB ZC hB 1B 2B aB iB 3B bB"},K:{"33":"1 2 3 4 5 6 7 8 9 L D M O f g h i k l m n o p q s t u v w x AB BB CB DB EB FB GB HB IB dB JB eB KB LB S","34":"B C hB aB iB bB"},E:{"33":"undefined cB I e J E F G A B C K L D rB sB tB vB hB aB bB wB xB","34":"lB"},G:{"33":"undefined lB cB I e J E F G A B C K L D gB tB AC CC"},P:{"33":"undefined OC gB YC ZC bC bB cC IC dC eC"},I:{"33":"0 1 2 3 4 5 6 7 8 9 undefined lB cB I x y z AB BB CB DB EB FB GB HB IB dB JB eB KB LB S MB NB OB PB QB RB SB TB UB VB WB XB YB ZB P Q T U V W X Y Z a b c R d H fB pB PC SC"}},B:NaN,C:":autofill CSS pseudo-class"};

Use MDN data to generate :autofill support data #86

Use MDN data to generate :autofill support data #86

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