feat(node): drop support for node < 12 || ^13 || ^15

BREAKING CHANGE: node < 12 || ^13 || ^15 are no longer
supported.

Author: djcsdy

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [ 10.x, 12.x, 14.x, 16.x ]
+        node-version: [ 12.x, 14.x, 16.x ]
     steps:
       - name: Find yarn cache
         id: find-yarn-cache

package.json

@@ -20,6 +20,9 @@
     "test": "tslint --project . && ava"
   },
   "sideEffects": false,
+  "engines": {
+    "node": "^12 || ^14 || >=16"
+  },
   "dependencies": {
     "@softwareventures/array": "^0.31.0 || ^0.33.0 || ^2.0.0 || ^3.0.0",
     "@types/imul": "^1.0.0",