fix: drop support for node < v14.18.0 due to formidable node:fs scope import statement (per #1800)

Author: titanism

.github/workflows/ci.yml

@@ -14,11 +14,6 @@ jobs:
     strategy:
       matrix:
        include:
-        - node-version: 10.x
-          test-on-old-node: 1
-        - node-version: 12.x
-          test-on-old-node: 1
-          # test-on-brower: 1
         - node-version: 14.x
         - node-version: 16.x
         - node-version: 18.x
@@ -37,17 +32,8 @@ jobs:
           # npm cache files are stored in `~/.npm` on Linux/macOS
           path: ~/.npm
           key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/yarn.lock') }}
-      - name: Install Dependencies On Old Node ${{ matrix.node-version }}
-        if: ${{ matrix.test-on-old-node == '1' }}
-        run: node ci/remove-deps-4-old-node.js && yarn install --ignore-scripts
-      - name: Install Dependencies On Node ${{ matrix.node-version }}
-        if: ${{ matrix.test-on-old-node != '1' }}
-        run: yarn install
       - name: Build
         run: npm run build
-      - name: Build On Old Node
-        if: ${{ matrix.test-on-old-node == '1' }}
-        run: npm run build:test
       - name: Test On Node ${{ matrix.node-version }}
         env:
           BROWSER: ${{ matrix.test-on-brower }}

.lib.babelrc

@@ -2,7 +2,7 @@
   "presets": [
     ["@babel/env", {
       "targets": {
-        "node": "6.4.0",
+        "node": "14.18.0",
         "browsers": [ "defaults, not ie 11" ]
       }
     }]

.test.babelrc

@@ -2,7 +2,7 @@
   "presets": [
     ["@babel/env", {
       "targets": {
-        "node": "6.4.0",
+        "node": "14.18.0",
         "browsers": [ "defaults, not ie 11" ]
       }
     }]

.travis.yml

@@ -4,18 +4,9 @@ node_js:
   - '18'
   - '16'
   - '14'
-  - '12'
 after_success: npm run coverage
 
 env:
   global:
     - SAUCE_USERNAME='shtylman-superagent'
     - SAUCE_ACCESS_KEY='39a45464-cb1d-4b8d-aa1f-83c7c04fa673'
-
-matrix:
-  include:
-    - node_js: "10"
-      env: BROWSER=1
-  include:
-    - node_js: "12"
-      env: HTTP2_TEST=1

README.md

@@ -112,7 +112,7 @@ If you are using [browserify][], [webpack][], [rollup][], or another bundler, th
 
 ## Supported Platforms
 
-* Node: v6.x+
+* Node: v14.18.0+
 * Browsers (see [.browserslistrc](.browserslistrc)):
 
   ```sh

package.json

@@ -69,7 +69,7 @@
     "zuul": "^3.12.0"
   },
   "engines": {
-    "node": ">=6.4.0 <13 || >=14"
+    "node": ">=14.18.0"
   },
   "files": [
     "dist/*.js",