chore(deps): Upgrade dependency postcss to v8

Error: true is not a PostCSS plugin
kktjs/kkt#324

package.json

@@ -11,7 +11,7 @@
     "watch": "tsbb watch --disable-babel --no-esm",
     "build": "tsbb build --disable-babel --no-esm",
     "test": "npm run build && tsbb test",
-    "coverage": "tsbb test --coverage",
+    "coverage": "npm run build && tsbb test --coverage",
     "example:test": "node ./lib/index.js -d test/src -o test/out",
     "example:test:watch": "node ./lib/index.js -d test/src -o test/out --combine test/out/dist.css --watch",
     "example:test:watch2": "node ./lib/index.js -d test/src -o test/out --watch --exclude-css"
@@ -38,16 +38,18 @@
     "src"
   ],
   "devDependencies": {
-    "tsbb": "3.4.4"
+    "tsbb": "3.5.4"
   },
   "dependencies": {
     "@types/fs-extra": "9.0.13",
     "@types/less": "3.0.3",
     "@types/minimist": "1.2.2",
-    "@types/node": "16.7.8",
+    "@types/node": "17.0.6",
+    "autoprefixer": "10.4.1",
     "chokidar": "3.5.2",
-    "directory-tree": "3.0.0",
+    "directory-tree": "3.0.1",
     "fs-extra": "10.0.0",
+    "postcss": "8.4.5",
     "read-pkg-up": "7.0.1",
     "less": "4.1.2",
     "less-plugin-autoprefix": "2.0.0",

test/compile.test.ts

@@ -21,6 +21,16 @@ it('compile = rmGlobal test case', async () => {
   expect(dist.indexOf(':global .a div') === -1).toBeTruthy();
 });
 
+it('autoprefix test case', async () => {
+  await compile('test/src', {
+    out: 'test/out',
+    combine: 'test/out/dist.css',
+    rmGlobal: true,
+  });
+  const dist = await fs.readFile('test/out/dist.css');
+  expect(dist.indexOf('-webkit-user-select') > -1).toBeTruthy();
+});
+
 it('Folder undefined test case', async () => {
   console.log = jest.fn();
   await compile('test/srcs', {

test/src/markdown.less

@@ -21,6 +21,8 @@ nav ul {
 }
 .inline {
   color: red;
+  display: flex;
+  user-select: none;
 }
 
 .foo {