feat: Manually throw error for Node 6 in Analyzer.

Author: amiller-gh

packages/@css-blocks/code-style/package.json

@@ -34,7 +34,7 @@
     "@opticss/code-style": "^0.3.0"
   },
   "engines": {
-    "node": ">=8"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "files": [
     "configs",

packages/@css-blocks/core/package.json

@@ -60,7 +60,7 @@
     "watch": "^1.0.2"
   },
   "engines": {
-    "node": ">=8"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "engineStrict": true
 }

packages/@css-blocks/core/src/Analyzer/Analyzer.ts

@@ -42,6 +42,12 @@ export abstract class Analyzer<K extends keyof TemplateTypes> {
     options?: Options,
     analysisOpts?: AnalysisOptions,
   ) {
+
+    // TODO: Remove April 2019 when Node.js 6 is EOL'd
+    if (parseInt(process.versions.node) <= 6) {
+      throw new Error("CSS Blocks does not support Node.js <= 6");
+    }
+
     this.cssBlocksOptions = resolveConfiguration(options);
     this.validatorOptions = analysisOpts && analysisOpts.validations || {};
     this.blockFactory = new BlockFactory(this.cssBlocksOptions);

packages/@css-blocks/core/src/index.ts

@@ -1,7 +1,7 @@
 /**
  * @module @css-blocks/core
  *
- * This comment will be used to document the "thing2" module.
+ * Core data models for CSS Blocks.
  */
 export * from "./BlockTree";
 export * from "./errors";

packages/@css-blocks/ember-cli/package.json

@@ -57,7 +57,7 @@
     "loader.js": "^4.7.0"
   },
   "engines": {
-    "node": "6.* || >= 8.*"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "ember-addon": {
     "configPath": "tests/dummy/config",

packages/@css-blocks/glimmer/package.json

@@ -44,7 +44,7 @@
     "url": "https://github.com/linkedin/css-blocks/issues"
   },
   "engines": {
-    "node": "6.* || >= 8.*"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "homepage": "https://github.com/linkedin/css-blocks/tree/master/packages/@css-blocks/glimmer#readme",
   "publishConfig": {

packages/@css-blocks/jsx/package.json

@@ -36,7 +36,7 @@
     "url": "https://github.com/linkedin/css-blocks/issues"
   },
   "engines": {
-    "node": ">=8"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "homepage": "https://github.com/linkedin/css-blocks/tree/master/packages/jsx#readme",
   "publishConfig": {

packages/@css-blocks/playground/package.json

@@ -31,7 +31,7 @@
     "typescript": "~2.8.0"
   },
   "engines": {
-    "node": ">= 4.0"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "private": true
 }

packages/@css-blocks/runtime/package.json

@@ -25,7 +25,7 @@
     "@css-blocks/core"
   ],
   "engines": {
-    "node": ">=8"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "author": "Chris Eppstein <[email protected]>",
   "license": "BSD-2-Clause",

packages/@css-blocks/webpack/package.json

@@ -35,7 +35,7 @@
     "test/mocha.opts"
   ],
   "engines": {
-    "node": ">=8"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "homepage": "https://github.com/linkedin/css-blocks/tree/master/packages/@css-blocks/webpack#readme",
   "publishConfig": {