feat: drop Node 10 support

.travis.yml

@@ -7,9 +7,9 @@ os:
   - windows
 
 node_js:
-  - "10"
-  - "12"
-  - "14"
+  - 12
+  - 14
+  - 16
 
 cache: npm
 

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+## [Unreleased](https://github.com/motdotla/dotenv/compare/v10.0.0...master)
+
+### Changed
+
+- _Breaking:_ drop support for Node v10 ([#558](https://github.com/motdotla/dotenv/pull/558))
+
 ## [10.0.0](https://github.com/motdotla/dotenv/compare/v9.0.2...v10.0.0) (2021-05-20)
 
 ### Added

appveyor.yml

@@ -3,9 +3,9 @@
 # Test against these versions of Node.js.
 environment:
   matrix:
-    - nodejs_version: "10"
-    - nodejs_version: "12"
-    - nodejs_version: "14"
+    - nodejs_version: 12
+    - nodejs_version: 14
+    - nodejs_version: 16
 
 # Install scripts. (runs after repo cloning)
 install:

package.json

@@ -47,7 +47,7 @@
   },
   "dependencies": {},
   "engines": {
-    "node": ">=10"
+    "node": ">=12"
   },
   "standard": {
     "ignore": [