feat: drop node 10, 11, and programmatic api

BREAKING CHANGE: This will drop official support for node versions less
than v12.  It also removes the `main` export as something that will
work, effectively dropping a supported programmatic api via
`require('npm')`

.github/workflows/ci.yml

@@ -58,7 +58,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [10.x, 12.x, 14.x, 16.x]
+        node-version: [12.x, 14.x, 16.x]
         platform:
           - os: ubuntu-latest
             shell: bash
@@ -100,7 +100,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [10.x, 12.x, 14.x, 16.x]
+        node-version: [12.x, 14.x, 16.x]
         platform:
           - os: ubuntu-latest
             shell: bash
@@ -141,7 +141,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: ['10.1', 10.x, '12.1', 12.x, '14.1', 14.x, '16.1', 16.x]
+        node-version: ['12.13.0', 12.x, '14.15.0', 14.x, '16.1', 16.x]
         platform:
           - os: ubuntu-latest
             shell: bash

lib/no-api.js

@@ -0,0 +1 @@
+throw new Error('The programmatic API was removed in npm v8.0.0')

package.json

@@ -38,17 +38,17 @@
     "lib": "./lib",
     "man": "./man"
   },
-  "main": "./lib/npm.js",
+  "main": "./lib/no-api.js",
   "bin": {
     "npm": "bin/npm-cli.js",
     "npx": "bin/npx-cli.js"
   },
   "exports": {
     ".": [
       {
-        "default": "./lib/npm.js"
+        "default": "./lib/no-api.js"
       },
-      "./lib/npm.js"
+      "./lib/no-api.js"
     ],
     "./package.json": "./package.json"
   },
@@ -235,6 +235,6 @@
   },
   "license": "Artistic-2.0",
   "engines": {
-    "node": ">=10"
+    "node": "^12.13.0 || ^14.15.0 || >=16"
   }
 }

test/lib/utils/unsupported.js

@@ -27,10 +27,15 @@ const versions = [
   ['v7.2.3', false, true],
   ['v8.4.0', false, true],
   ['v9.3.0', false, true],
-  ['v10.0.0-0', false, false],
-  ['v11.0.0-0', false, false],
-  ['v12.0.0-0', false, false],
-  ['v13.0.0-0', false, false],
+  ['v10.0.0-0', false, true],
+  ['v11.0.0-0', false, true],
+  ['v12.0.0-0', false, true],
+  ['v12.13.0-0', false, false],
+  ['v13.0.0-0', false, true],
+  ['v14.0.0-0', false, true],
+  ['v14.15.0-0', false, false],
+  ['v15.0.0-0', false, true],
+  ['v16.0.0-0', false, false],
 ]
 
 t.test('versions', function (t) {