ci(package): build speed improvements (#776)

* build(tsc): fix incremental build
* build(tsc): enable smart incremental builds
* ci(eslint): enable cache
* build(package): run tests before creating package

Author: chimurai

Diff for: .gitignore

@@ -87,3 +87,4 @@ typings/
 # End of https://www.gitignore.io/api/node
 
 dist
+tsconfig.tsbuildinfo

Diff for: .lintstagedrc

@@ -1,4 +1,4 @@
 {
   "**/*.{js,ts,md,yml,json,html}": "prettier --write",
-  "**/*.{js,ts}": "eslint --fix",
+  "**/*.{js,ts}": "eslint --cache --fix"
 }

Diff for: package.json

@@ -8,19 +8,18 @@
     "dist"
   ],
   "scripts": {
-    "clean": "rm -rf dist coverage",
+    "clean": "rm -rf dist coverage tsconfig.tsbuildinfo .eslintcache",
     "lint": "yarn prettier && yarn eslint",
     "lint:fix": "yarn prettier:fix && yarn eslint:fix",
-    "eslint": "eslint '{src,test}/**/*.ts'",
+    "eslint": "eslint '{src,test}/**/*.ts' --cache",
     "eslint:fix": "yarn eslint --fix",
     "prettier": "prettier --list-different \"**/*.{js,ts,md,yml,json,html}\"",
     "prettier:fix": "prettier --write \"**/*.{js,ts,md,yml,json,html}\"",
-    "prebuild": "yarn clean",
-    "build": "tsc",
+    "build": "tsc --build",
     "test": "jest",
     "coverage": "jest --coverage --coverageReporters=lcov",
     "prepare": "husky install",
-    "prepack": "yarn build && rm dist/tsconfig.tsbuildinfo",
+    "prepack": "yarn clean && yarn test && yarn build",
     "spellcheck": "npx --yes cspell --show-context --show-suggestions '**/*.*'"
   },
   "repository": {

Diff for: tsconfig.json

@@ -1,5 +1,6 @@
 {
   "compilerOptions": {
+    "rootDir": "./src",
     "outDir": "./dist",
     "lib": ["es2019", "es2020.bigint", "es2020.string", "es2020.symbol.wellknown"],
     "module": "commonjs",