Drop support of Node v10 (#4633)

.github/workflows/mocha.yml

@@ -25,7 +25,6 @@ jobs:
           - ubuntu-latest
           - windows-2019
         node:
-          - 10
           - 12
           - 14
           - 16
@@ -70,7 +69,6 @@ jobs:
           - ubuntu-latest
           - windows-2019
         node:
-          - 10
           - 12
           - 14
           - 16

docs/index.md

@@ -64,7 +64,7 @@ or as a development dependency for your project:
 $ npm install --save-dev mocha
 ```
 
-> As of v8.0.0, Mocha requires Node.js v10.12.0 or newer.
+> As of v9.0.0, Mocha requires Node.js v12.0.0 or newer.
 
 ## Getting Started
 
@@ -116,7 +116,7 @@ $ npm test
 
 ## Run Cycle Overview
 
-> Updated for v9.0.0.
+> Updated for v8.0.0.
 
 The following is a mid-level outline of Mocha's "flow of execution" when run in Node.js; the "less important" details have been omitted.
 

package.json

@@ -42,7 +42,7 @@
     "test": "./test"
   },
   "engines": {
-    "node": ">= 10.12.0"
+    "node": ">= 12.0.0"
   },
   "scripts": {
     "prepublishOnly": "nps test clean build",

test/integration/parallel.spec.js

@@ -2,27 +2,20 @@
 
 const assert = require('assert');
 const {runMochaJSONAsync} = require('./helpers');
-const semver = require('semver');
 
 describe('parallel run', () => {
   /**
    * @see https://github.com/mochajs/mocha/issues/4559
    */
   it('should allow `import {it} from "mocha"` module syntax', async () => {
-    if (semver.major(process.version) <= 10) {
-      console.log(
-        `[SKIPPED] for node ${process.version} (es module syntax isn't supported on node <= 10)`
-      );
-    } else {
-      const result = await runMochaJSONAsync('parallel/test3.mjs', [
-        '--parallel',
-        '--jobs',
-        '2',
-        require.resolve('./fixtures/parallel/test1.mjs'),
-        require.resolve('./fixtures/parallel/test2.mjs')
-      ]);
-      assert.strictEqual(result.stats.failures, 1);
-      assert.strictEqual(result.stats.passes, 2);
-    }
+    const result = await runMochaJSONAsync('parallel/test3.mjs', [
+      '--parallel',
+      '--jobs',
+      '2',
+      require.resolve('./fixtures/parallel/test1.mjs'),
+      require.resolve('./fixtures/parallel/test2.mjs')
+    ]);
+    assert.strictEqual(result.stats.failures, 1);
+    assert.strictEqual(result.stats.passes, 2);
   });
 });