Stage 4 proposals

packages/babel-compat-data/data/corejs2-built-ins.json

@@ -8,7 +8,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "5",
-    "electron": "0.32"
+    "electron": "0.31"
   },
   "es6.array.every": {
     "chrome": "5",
@@ -33,7 +33,7 @@
     "node": "4",
     "ios": "8",
     "samsung": "5",
-    "electron": "0.32"
+    "electron": "0.31"
   },
   "es6.array.filter": {
     "chrome": "5",
@@ -58,7 +58,7 @@
     "node": "4",
     "ios": "8",
     "samsung": "5",
-    "electron": "0.32"
+    "electron": "0.31"
   },
   "es6.array.find-index": {
     "chrome": "45",
@@ -69,7 +69,7 @@
     "node": "4",
     "ios": "8",
     "samsung": "5",
-    "electron": "0.32"
+    "electron": "0.31"
   },
   "es7.array.flat-map": {
     "chrome": "69",
@@ -194,7 +194,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "5",
-    "electron": "0.32"
+    "electron": "0.31"
   },
   "es6.array.reduce": {
     "chrome": "5",
@@ -573,7 +573,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "es6.number.epsilon": {
     "chrome": "34",
@@ -1287,7 +1287,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "es6.string.ends-with": {
     "chrome": "41",
@@ -1298,7 +1298,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "es6.string.fixed": {
     "chrome": "5",
@@ -1348,7 +1348,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "es6.string.includes": {
     "chrome": "41",
@@ -1359,7 +1359,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "es6.string.italics": {
     "chrome": "5",
@@ -1429,7 +1429,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "es6.string.repeat": {
     "chrome": "41",
@@ -1440,7 +1440,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "es6.string.small": {
     "chrome": "5",
@@ -1464,7 +1464,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "es6.string.strike": {
     "chrome": "5",

packages/babel-compat-data/data/plugin-bugfixes.json

@@ -109,7 +109,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "bugfix/transform-tagged-template-caching": {
     "chrome": "41",
@@ -120,6 +120,6 @@
     "node": "4",
     "ios": "13",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   }
 }

packages/babel-compat-data/data/plugins.json

@@ -1,4 +1,17 @@
 {
+  "proposal-class-properties": {
+    "chrome": "74",
+    "opera": "61",
+    "edge": "79",
+    "node": "12",
+    "samsung": "11",
+    "electron": "6"
+  },
+  "proposal-private-methods": {
+    "chrome": "84",
+    "edge": "84",
+    "electron": "10"
+  },
   "proposal-numeric-separator": {
     "chrome": "75",
     "opera": "62",
@@ -10,16 +23,11 @@
     "samsung": "11",
     "electron": "6"
   },
-  "proposal-class-properties": {
-    "chrome": "74",
-    "opera": "61",
-    "edge": "79",
-    "node": "12",
-    "samsung": "11",
-    "electron": "6"
-  },
-  "proposal-private-methods": {
-    "chrome": "84"
+  "proposal-logical-assignment-operators": {
+    "chrome": "85",
+    "firefox": "79",
+    "safari": "14",
+    "electron": "10"
   },
   "proposal-nullish-coalescing-operator": {
     "chrome": "80",
@@ -28,7 +36,8 @@
     "firefox": "72",
     "safari": "13.1",
     "node": "14",
-    "electron": "8.1"
+    "ios": "13.4",
+    "electron": "8"
   },
   "proposal-optional-chaining": {
     "chrome": "80",
@@ -37,7 +46,8 @@
     "firefox": "74",
     "safari": "13.1",
     "node": "14",
-    "electron": "8.1"
+    "ios": "13.4",
+    "electron": "8"
   },
   "proposal-json-strings": {
     "chrome": "66",
@@ -120,6 +130,7 @@
     "chrome": "64",
     "opera": "51",
     "edge": "79",
+    "firefox": "78",
     "safari": "11.1",
     "node": "10",
     "ios": "11.3",
@@ -157,7 +168,7 @@
     "node": "4",
     "ios": "13",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "transform-literals": {
     "chrome": "44",
@@ -202,7 +213,7 @@
     "ie": "11",
     "ios": "10",
     "samsung": "3.4",
-    "electron": "0.22"
+    "electron": "0.21"
   },
   "transform-classes": {
     "chrome": "46",
@@ -235,7 +246,7 @@
     "node": "4",
     "ios": "9",
     "samsung": "4",
-    "electron": "0.28"
+    "electron": "0.27"
   },
   "transform-duplicate-keys": {
     "chrome": "42",
@@ -410,5 +421,13 @@
     "phantom": "2",
     "samsung": "1",
     "electron": "0.20"
+  },
+  "proposal-export-namespace-from": {
+    "chrome": "72",
+    "edge": "79",
+    "opera": "60",
+    "firefox": "80",
+    "node": "13.2",
+    "samsung": "11.0"
   }
 }

packages/babel-compat-data/package.json

@@ -36,7 +36,7 @@
   "devDependencies": {
     "@babel/helper-compilation-targets": "^7.10.4",
     "mdn-browser-compat-data": "1.0.31",
-    "electron-to-chromium": "1.3.377",
+    "electron-to-chromium": "1.3.513",
     "lodash": "^4.17.19"
   }
 }

packages/babel-compat-data/scripts/build-data.js

@@ -9,6 +9,19 @@ for (const target of ["plugin", "corejs2-built-in"]) {
     environments,
     require(`./data/${target}-features`)
   );
+  if (target === "plugin") {
+    // add export-namespace-from from mdn-browser-compat-data
+    // todo: replace the hardcoded compat data to mdn-browser-compat-data
+    // after https://github.com/mdn/browser-compat-data/pull/6394 is published
+    newData["proposal-export-namespace-from"] = {
+      chrome: "72",
+      edge: "79",
+      opera: "60",
+      firefox: "80",
+      node: "13.2",
+      samsung: "11.0",
+    };
+  }
   const dataPath = path.join(__dirname, `../data/${target}s.json`);
 
   if (!writeFile(newData, dataPath, target)) {

packages/babel-compat-data/scripts/build-modules-support.js

@@ -35,8 +35,8 @@ function process(source) {
   const allowedBrowsers = {};
 
   Object.keys(stats).forEach(browser => {
-    const browserName = browserNameMap[browser] ?? browser;
-    let browserSupport = stats[browserSupportMap[browserName] ?? 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
     }

packages/babel-compat-data/scripts/data/plugin-features.js

@@ -122,8 +122,12 @@ const es2020 = {
   "proposal-optional-chaining": "optional chaining operator (?.)",
 };
 
-const shippedProposal = {
+const es2021 = {
   "proposal-numeric-separator": "numeric separator",
+  "proposal-logical-assignment-operators": "Logical Assignment",
+};
+
+const shippedProposal = {
   "proposal-class-properties": {
     features: [
       "static class fields",
@@ -139,6 +143,7 @@ const shippedProposal = {
 module.exports = Object.assign(
   {},
   shippedProposal,
+  es2021,
   es2020,
   es2019,
   es2015Parameter,

packages/babel-compat-data/scripts/download-compat-table.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 set -e
 
-COMPAT_TABLE_COMMIT=50e5424d113869b08911a5df956d0e931722e5b5
+COMPAT_TABLE_COMMIT=163aacb6f93e325231d578e31c03141cd9086dbb
 GIT_HEAD=build/compat-table/.git/HEAD
 
 if [ -d "build/compat-table" ]; then