WIP: feat: use c8 instead of nyc when node >= 10.12.0

.travis.yml

@@ -4,6 +4,7 @@ node_js:
   - '6'
   - '8'
   - '10'
+  - '12'
 env:
   - EGG_VERSION=1
   - EGG_VERSION=2

lib/cmd/cov.js

@@ -5,6 +5,7 @@ const debug = require('debug')('egg-bin');
 const path = require('path');
 const rimraf = require('mz-modules/rimraf');
 const testExclude = require('test-exclude');
+const semver = require('semver');
 
 const Command = require('./test');
 const EXCLUDES = Symbol('cov#excludes');
@@ -68,7 +69,11 @@ class CovCommand extends Command {
       this.addExclude(exclude);
     }
 
-    const nycCli = require.resolve('nyc/bin/nyc.js');
+    let nycCli = require.resolve('nyc/bin/nyc.js');
+    if (semver.gte(process.versions.node, '10.12.0')) {
+      nycCli = require.resolve('c8/bin/c8.js');
+    }
+
     const coverageDir = path.join(cwd, 'coverage');
     yield rimraf(coverageDir);
     const outputDir = path.join(cwd, 'node_modules/.nyc_output');

package.json

@@ -10,6 +10,7 @@
   },
   "dependencies": {
     "autod": "^3.1.0",
+    "c8": "^3.5.0",
     "chalk": "^2.4.2",
     "co-mocha": "^1.2.2",
     "common-bin": "^2.8.1",
@@ -80,6 +81,6 @@
     "bin"
   ],
   "ci": {
-    "version": "6, 8"
+    "version": "6, 8, 10, 12"
   }
 }