From 6b9404ab52d45f364f5a599728ffb11029309558 Mon Sep 17 00:00:00 2001
From: Henry Zhu <hi@henryzoo.com>
Date: Thu, 6 Oct 2016 17:08:13 -0400
Subject: [PATCH] fixes, run build script in node 0.10 with babel-node (#12)

* fixes, run build script in node 0.10 with babel-node

* try node
---
 .../babel-preset-env/data/plugins.json        | 31 ++++++----
 experimental/babel-preset-env/package.json    |  4 +-
 .../babel-preset-env/scripts/build-data.js    | 62 ++++++++++++++-----
 3 files changed, 69 insertions(+), 28 deletions(-)

diff --git a/experimental/babel-preset-env/data/plugins.json b/experimental/babel-preset-env/data/plugins.json
index 5dd10b0ffa..f47c5b5737 100644
--- a/experimental/babel-preset-env/data/plugins.json
+++ b/experimental/babel-preset-env/data/plugins.json
@@ -8,7 +8,8 @@
   "transform-es2015-block-scoped-functions": {
     "chrome": 41,
     "firefox": 46,
-    "safari": 10
+    "safari": 10,
+    "node": 4
   },
   "transform-es2015-block-scoping": {
     "chrome": 49,
@@ -19,13 +20,15 @@
     "chrome": 46,
     "edge": 13,
     "firefox": 45,
-    "safari": 10
+    "safari": 10,
+    "node": 5
   },
   "transform-es2015-computed-properties": {
     "chrome": 44,
     "edge": 12,
     "firefox": 34,
-    "safari": 10
+    "safari": 7,
+    "node": 4
   },
   "check-es2015-constants": {
     "chrome": 49,
@@ -34,12 +37,10 @@
   },
   "transform-es2015-destructuring": {
     "chrome": 51,
-    "edge": 14,
     "safari": 10
   },
   "transform-es2015-for-of": {
     "chrome": 51,
-    "edge": 14,
     "safari": 10
   },
   "transform-es2015-function-name": {
@@ -49,13 +50,15 @@
   "transform-es2015-literals": {
     "chrome": 44,
     "edge": 12,
-    "safari": 9
+    "safari": 9,
+    "node": 4
   },
   "transform-es2015-object-super": {
     "chrome": 46,
     "edge": 13,
     "firefox": 45,
-    "safari": 10
+    "safari": 10,
+    "node": 5
   },
   "transform-es2015-parameters": {
     "chrome": 49,
@@ -66,13 +69,15 @@
     "chrome": 43,
     "edge": 12,
     "firefox": 33,
-    "safari": 9
+    "safari": 9,
+    "node": 4
   },
   "transform-es2015-spread": {
     "chrome": 46,
     "edge": 13,
     "firefox": 36,
-    "safari": 10
+    "safari": 10,
+    "node": 5
   },
   "transform-es2015-sticky-regex": {
     "chrome": 49,
@@ -84,13 +89,15 @@
     "chrome": 41,
     "edge": 13,
     "firefox": 34,
-    "safari": 9
+    "safari": 9,
+    "node": 4
   },
   "transform-es2015-typeof-symbol": {
     "chrome": 38,
     "edge": 12,
     "firefox": 36,
-    "safari": 9
+    "safari": 9,
+    "node": 0.12
   },
   "transform-es2015-unicode-regex": {
     "chrome": 50,
@@ -108,7 +115,7 @@
     "edge": 14
   },
   "transform-async-to-generator": {
-    "edge": 14
+    "chrome": 55
   },
   "syntax-trailing-function-commas": {
     "edge": 14,
diff --git a/experimental/babel-preset-env/package.json b/experimental/babel-preset-env/package.json
index 57cda730c7..bf66c17a94 100644
--- a/experimental/babel-preset-env/package.json
+++ b/experimental/babel-preset-env/package.json
@@ -8,8 +8,8 @@
   "repository": "https://github.com/babel/babel-preset-env",
   "main": "lib/index.js",
   "scripts": {
-    "build": "npm run build-data && babel src -d lib",
-    "build-data": "node ./scripts/build-data.js",
+    "build": "babel src -d lib",
+    "build-data": "babel-node ./scripts/build-data.js",
     "dev": "babel -w src -d lib",
     "lint": "eslint scripts src test",
     "fix": "eslint scripts src test --fix",
diff --git a/experimental/babel-preset-env/scripts/build-data.js b/experimental/babel-preset-env/scripts/build-data.js
index 28d79edc74..9664939887 100644
--- a/experimental/babel-preset-env/scripts/build-data.js
+++ b/experimental/babel-preset-env/scripts/build-data.js
@@ -28,32 +28,66 @@ const environments = [
   "edge",
   "firefox",
   "safari",
+  "node"
 ];
 
+const envMap = {
+  safari51: "safari5",
+  safari71_8: "safari7",
+  chrome: "chrome19",
+  chrome19dev: "chrome19",
+  chrome21dev: "chrome21",
+  firefox3_5: "firefox3",
+  firefox3_6: "firefox3",
+  node012: "node0.12",
+  node64: "node6",
+  node65: "node6.5"
+};
+
 const getLowestImplementedVersion = ({ features }, env) => {
   let tests = flatten(compatibilityTests
     .filter((test) => features.indexOf(test.name) >= 0)
     .map((test) => {
       return test.subtests ?
-        test.subtests.map((subtest) => subtest.res) :
-        test.res;
+        test.subtests.map((subtest) => ({
+          name: `${test.name}/${subtest.name}`,
+          res: subtest.res
+        })) :
+      {
+        name: test.name,
+        res: test.res
+      };
     })
   );
 
-  const envVersions = versions.filter((version) => version.startsWith(env));
+  let envTests = tests
+  .map(({ res: test, name }, i) => {
+    return Object.keys(test)
+    .filter((t) => t.startsWith(env))
+    // TODO: make flagged/etc an options
+    .filter((test) => tests[i].res[test] === true || tests[i].res[test] === "strict")
+    // normalize some keys
+    .map((test) => envMap[test] || test)
+    .filter((test) => !isNaN(parseInt(test.replace(env, ""))))
+    .shift();
+  });
 
-  for (let i = 0; i < envVersions.length; i++) {
-    const version = envVersions[i];
-    tests = tests.filter((test) =>
-      test[version] !== true &&
-      test[version] !== "strict"
-    );
-    if (tests.length === 0) {
-      const number = parseInt(version.replace(env, ""), 10);
-      return isFinite(number) ? number : null;
-    }
+  let envFiltered = envTests.filter((t) => t);
+  if (envTests.length > envFiltered.length) {
+    // envTests.forEach((test, i) => {
+    //   if (!test) {
+    //     // print unsupported features
+    //     if (env === 'node') {
+    //       console.log(`ENV(${env}): ${tests[i].name}`);
+    //     }
+    //   }
+    // });
+    return null;
   }
-  return null;
+
+  return envTests
+  .map((str) => Number(str.replace(env, "")))
+  .reduce((a, b) => { return (a < b) ? b : a; });
 };
 
 const data = {};