From 8abe061fab6b51bb8929ea91fe17c6a32bbc63e3 Mon Sep 17 00:00:00 2001
From: Buu Nguyen <buunguyen@gmail.com>
Date: Thu, 25 May 2017 08:59:01 -0700
Subject: [PATCH] Support specifying minimum Node version a test requires
 (#5765)

---
 CONTRIBUTING.md                             |  9 +++++++++
 packages/babel-helper-fixtures/package.json |  3 ++-
 packages/babel-helper-fixtures/src/index.js | 19 +++++++++++++++++++
 3 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 2f47779de3..d0482635a0 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -188,6 +188,15 @@ If you need to check for an error that is thrown you can add to the `options.jso
 }
 ```
 
+If the test requires a minimum Node version, you can add `minNodeVersion` (must be in semver format).
+
+```js
+// options.json example
+{
+  "minNodeVersion": "5.0.0"
+}
+```
+
 #### Bootstrapping expected output
 
 For both `babel-plugin-x` and `babylon`, you can easily generate an `expected.js`/`expected.json` automatically by just providing `actual.js` and running the tests as you usually would.
diff --git a/packages/babel-helper-fixtures/package.json b/packages/babel-helper-fixtures/package.json
index aeeb536a02..367cb4b165 100644
--- a/packages/babel-helper-fixtures/package.json
+++ b/packages/babel-helper-fixtures/package.json
@@ -8,6 +8,7 @@
   "main": "lib/index.js",
   "dependencies": {
     "lodash": "^4.2.0",
-    "try-resolve": "^1.0.0"
+    "try-resolve": "^1.0.0",
+    "semver": "^5.3.0"
   }
 }
diff --git a/packages/babel-helper-fixtures/src/index.js b/packages/babel-helper-fixtures/src/index.js
index 4b905cc7cd..96adcabab0 100644
--- a/packages/babel-helper-fixtures/src/index.js
+++ b/packages/babel-helper-fixtures/src/index.js
@@ -3,9 +3,12 @@ import trimEnd from "lodash/trimEnd";
 import resolve from "try-resolve";
 import clone from "lodash/clone";
 import merge from "lodash/merge";
+import semver from "semver";
 import path from "path";
 import fs from "fs";
 
+const nodeVersion = semver.clean(process.version.slice(1));
+
 function humanize(val, noext) {
   if (noext) val = path.basename(val, path.extname(val));
   return val.replace(/-/g, " ");
@@ -125,6 +128,22 @@ export default function get(entryLoc): Array<Suite> {
         },
       };
 
+      // If there's node requirement, check it before pushing task
+      if (taskOpts.minNodeVersion) {
+        const minimumVersion = semver.clean(taskOpts.minNodeVersion);
+
+        if (minimumVersion == null) {
+          throw new Error(`'minNodeVersion' has invalid semver format: ${taskOpts.minNodeVersion}`);
+        }
+
+        if (semver.lt(nodeVersion, minimumVersion)) {
+          return;
+        }
+
+        // Delete to avoid option validation error
+        delete taskOpts.minNodeVersion;
+      }
+
       // traceur checks
 
       if (test.exec.code.indexOf("// Async.") >= 0) {