remove npm-run-all

It fails to run the scripts randomly on Windows.

Author: aminya

package.json

@@ -7,17 +7,17 @@
   "module": "dist-esm/index.js",
   "scripts": {
     "prebuild": "rimraf dist/ dist-esm/",
-    "build": "run-p build:cjs build:es",
+    "build": "npm run build:cjs && npm run build:es",
     "build:cjs": "tsc -p tsconfig.json",
     "build:es": "tsc -p tsconfig-esm.json",
-    "postbuild": "run-s bundle",
+    "postbuild": "npm run bundle",
     "bundle": "node ./scripts/rollup-script.js",
-    "test": "run-s test:ava test:puppeteer:basic test:puppeteer:webpack",
+    "test": "npm run test:ava && npm run test:puppeteer:basic && npm run test:puppeteer:webpack",
     "test:ava": "cross-env TS_NODE_FILES=true node ./scripts/ava-script.js",
     "test:puppeteer:basic": "puppet-run --plugin=mocha --bundle=./test/workers/:/workers/ --serve=./bundle/worker.js:/worker.js ./test/*.chromium*.ts",
     "test:puppeteer:webpack": "puppet-run --serve ./test/webpack/dist/app.web/0.worker.js --serve ./test/webpack/dist/app.web/1.worker.js --plugin=mocha ./test/webpack/webpack.chromium.mocha.ts",
     "posttest": "tslint --project .",
-    "prepare": "run-s build"
+    "prepare": "npm run build"
   },
   "exports": {
     ".": {
@@ -81,7 +81,6 @@
     "cross-env": "^7.0.2",
     "execa": "^4.0.3",
     "mocha": "^5.2.0",
-    "npm-run-all2": "^5.0.1",
     "puppet-run": "^0.11.1",
     "puppet-run-plugin-mocha": "^0.10.0-alpha",
     "raw-loader": "^4.0.1",