add linting

add prettier
add concurrent users upload test
add api and play for users
remove some code smell

tests/k6/package.json

@@ -4,9 +4,20 @@
   "main": "index.js",
   "scripts": {
     "clean": "rm -rf ./dist",
+    "lint": "eslint './src/**/*.ts' --fix",
     "build": "rollup -c",
     "build:w": "rollup -c -w"
   },
+  "husky": {
+    "hooks": {
+      "pre-commit": "lint-staged"
+    }
+  },
+  "lint-staged": {
+    "*.{ts}": [
+      "eslint --fix"
+    ]
+  },
   "devDependencies": {
     "@babel/core": "^7.9.0",
     "@babel/polyfill": "^7.12.1",
@@ -18,26 +29,26 @@
     "@rollup/plugin-json": "^4.0.3",
     "@rollup/plugin-node-resolve": "^7.1.3",
     "@rollup/pluginutils": "^4.1.0",
-    "@types/faker": "^5.1.4",
-    "@types/jest": "^25.2.1",
     "@types/k6": "^0.28.2",
     "@types/lodash": "^4.14.165",
-    "@typescript-eslint/eslint-plugin": "^2.29.0",
-    "@typescript-eslint/parser": "^2.29.0",
+    "@typescript-eslint/eslint-plugin": "^4.9.0",
+    "@typescript-eslint/parser": "^4.9.0",
     "babel-plugin-lodash": "^3.3.4",
-    "eslint": "^6.8.0",
-    "eslint-config-prettier": "^6.11.0",
+    "eslint": "^7.14.0",
+    "eslint-config-prettier": "^6.15.0",
     "eslint-plugin-jest": "^23.8.2",
-    "eslint-plugin-prettier": "^3.1.3",
+    "eslint-plugin-prettier": "^3.2.0",
+    "husky": "^4.3.0",
     "jest": "^25.4.0",
     "k6": "^0.0.0",
     "lint-staged": "^10.1.7",
-    "prettier": "^2.0.5",
+    "prettier": "^2.2.1",
+    "prettier-eslint": "^12.0.0",
     "rollup": "^2.7.2",
     "rollup-plugin-babel": "^4.4.0",
     "rollup-plugin-multi-input": "^1.1.1",
     "rollup-plugin-terser": "^5.3.0",
-    "typescript": "^3.8.3"
+    "typescript": "^4.1.2"
   },
   "dependencies": {
     "lodash": "^4.17.20",