Add mdn- and Node.js 8 deprecation warnings for 1.1 release

README.md

@@ -1,3 +1,5 @@
+**Warning:** This package is soon-to-be renamed. Use [`@mdn/browser-compat-data`](https://www.npmjs.com/package/@mdn/browser-compat-data) instead. If you're already using `mdn-browser-compat-data`, read [the upgrade guide](https://github.com/mdn/browser-compat-data/blob/v1.1.0/UPGRADE-2.0.md).
+
 # mdn-browser-compat-data
 
 [https://github.com/mdn/browser-compat-data](https://github.com/mdn/browser-compat-data)

UPGRADE-2.0.x.md

@@ -0,0 +1,30 @@
+# Upgrading from `mdn-browser-compat-data` 1.1 to `@mdn/browser-compat-data` 2.0.x
+
+`mdn-browser-compat-data` has been renamed to `@mdn/browser-compat-data` (note the `@mdn` scope). Follow these instructions to upgrade to the new package name.
+
+## Before you start
+
+This upgrade causes two breaking changes:
+
+- The old package name no longer works, which means you'll have to update `require()` calls and your `package.json` dependencies.
+- Node.js 8 is no longer supported, which means you'll have to upgrade to Node.js 10 or later.
+
+The schema, public API, and other details of the package remain the same since `1.1.x`.
+
+## Upgrade
+
+1. If you have not done so already, upgrade to Node.js 10 or later. Visit the [Node.js site](https://nodejs.org/) for downloads and changelogs.
+
+2. Remove `mdn-browser-compat-data` from your package dependencies.
+
+   In the same directory as your `package.json` file, run `npm uninstall mdn-browser-compat-data`.
+
+3. Add `@mdn/browser-compat-data` to your package dependencies.
+
+   In the same directory as your `package.json` file, run `npm install @mdn/browser-compat-data`.
+
+4. In your code, replace any `require("mdn-browser-compat-data")` calls with `require("@mdn/browser-compat-data")`.
+
+   If possible, run your test suite to make sure this worked.
+
+If you encountered any undocumented breaking changes as a result of this upgrade, please [open an issue](https://github.com/mdn/browser-compat-data/issues/new).

index.js

@@ -3,6 +3,35 @@ const fs = require('fs');
 const path = require('path');
 const extend = require('extend');
 
+function warnPackageName() {
+  if (!warnPackageName.emitted) {
+    warnPackageName.emitted = true;
+    process.emitWarning(
+      'mdn-browser-compat-data is deprecated. Upgrade to @mdn/browser-compat-data. Learn more: https://github.com/mdn/browser-compat-data/blob/v1.1.0/UPGRADE-2.0.x.md',
+      {
+        type: 'DeprecationWarning',
+      },
+    );
+  }
+}
+
+function warnNode8Deprecation() {
+  if (!warnNode8Deprecation.emitted) {
+    warnNode8Deprecation.emitted = true;
+    if (process.version.split('.')[0] === 'v8') {
+      process.emitWarning(
+        'mdn-browser-compat-data: @mdn/browser-compat-data ends support for Node.js 8. Upgrade to Node.js 10 or later.',
+        {
+          type: 'DeprecationWarning',
+        },
+      );
+    }
+  }
+}
+
+warnPackageName();
+warnNode8Deprecation();
+
 function load() {
   // Recursively load one or more directories passed as arguments.
   let dir,