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refactor: replace caniuse-db by mdn-browser-compat-data (#11838)

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* refactor: replace caniuse-db by mdn-browser-compat-data

* fix broken test
This commit is contained in:
Huáng Jùnliàng
2020-07-20 17:11:21 -04:00
committed by GitHub
parent e51a91e131
commit 48be93b46c
9 changed files with 144 additions and 99 deletions
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71
packages/babel-compat-data/scripts/build-modules-support.js
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@@ -1,40 +1,59 @@
const path = require("path");
const fs = require("fs");
const moduleSupport = require("caniuse-db/features-json/es6-module.json");
const acceptedWithCaveats = new Set(["safari", "ios_saf"]);
const compatData = require("mdn-browser-compat-data").javascript;
// Map mdn-browser-compat-data to browserslist browser names
const browserNameMap = {
and_chr: "chrome",
and_ff: "firefox",
android: "chrome", // map to chrome here as Android WebView 61 is Chromium-based
op_mob: "opera",
chrome_android: "and_chr",
firefox_android: "and_ff",
safari_ios: "ios_saf",
nodejs: "node",
webview_android: "android",
opera_android: "op_mob",
samsunginternet_android: "samsung",
};
const { stats } = moduleSupport;
const allowedBrowsers = {};
const browserSupportMap = {
android: "chrome_android", // map to chrome here as Android WebView 61 is Chromium-based
};
Object.keys(stats).forEach(browser => {
const browserName = browserNameMap[browser] || browser;
const browserVersions = stats[browserName];
const allowedVersions = Object.keys(browserVersions)
.filter(value => {
// Edge 16/17 are marked as "y #6"
return acceptedWithCaveats.has(browserName)
? browserVersions[value][0] === "a"
: browserVersions[value].startsWith("y");
})
.sort((a, b) => a - b);
if (allowedVersions[0] !== undefined) {
// Handle cases where caniuse specifies version as: "11.0-11.2"
allowedBrowsers[browser] = allowedVersions[0].split("-")[0];
function browserVersion(browser, version_added) {
if (browser === "samsunginternet_android" && version_added === "8.0") {
return "8.2"; // samsung 8.0 is not defined in browserslist
}
});
// fixme: preset-env maps opera_android as opera, this is incorrect as they have different engine mappings
// see https://github.com/mdn/browser-compat-data/blob/master/browsers/opera_android.json
if (browser === "opera_android" && version_added === "45") {
return "48";
}
return version_added;
}
function process(source) {
const stats = source.__compat.support;
const allowedBrowsers = {};
Object.keys(stats).forEach(browser => {
const browserName = browserNameMap[browser] ?? browser;
let browserSupport = stats[browserSupportMap[browserName] ?? browser];
if (Array.isArray(browserSupport)) {
browserSupport = browserSupport[0]; // The first item is the most progressive support
}
if (browserSupport.version_added && !browserSupport.flags) {
allowedBrowsers[browserName] = browserVersion(
browser,
browserSupport.version_added
);
}
});
return allowedBrowsers;
}
const dataPath = path.join(__dirname, "../data/native-modules.json");
const data = {
"es6.module": allowedBrowsers,
"es6.module": process(compatData.statements.export),
};
fs.writeFileSync(dataPath, `${JSON.stringify(data, null, 2)}\n`);
exports.process = process;