feat(tauri.js) add TS API definition files (.d.ts) (#740)

* feat(tauri.js) build TS API definitions

* chore(tauri.js) organize scripts

* fix(tauri.js) build:typedefs on windows

cli/tauri.js/package.json

@@ -10,9 +10,10 @@
     "url": "https://opencollective.com/tauri"
   },
   "scripts": {
-    "build": "rollup -c --silent && webpack --progress",
+    "build": "yarn build:api && yarn build:typedefs && yarn build:webpack",
     "build:webpack": "webpack --progress",
-    "build:api": "rollup -c",
+    "build:api": "rollup -c && yarn build:typedefs",
+    "build:typedefs": "yarn tsc ./api-src/index.ts --declaration --emitDeclarationOnly --outDir api",
     "build-release": "yarn build --display none --progress false",
     "test": "jest --runInBand --no-cache --testPathIgnorePatterns=\"(build|dev)\"",
     "pretest": "yarn build",
@@ -116,7 +117,7 @@
     "toml-loader": "1.0.0",
     "ts-loader": "7.0.5",
     "tslib": "2.0.0",
-    "typescript": "3.9.6",
+    "typescript": "^3.9.6",
     "webpack": "4.43.0",
     "webpack-cli": "3.3.12",
     "webpack-node-externals": "1.7.2"

cli/tauri.js/yarn.lock

@@ -9434,7 +9434,7 @@ typedarray@^0.0.6:
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
   integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
 
-typescript@3.9.6:
+typescript@^3.9.6:
   version "3.9.6"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.6.tgz#8f3e0198a34c3ae17091b35571d3afd31999365a"
   integrity sha512-Pspx3oKAPJtjNwE92YS05HQoY7z2SFyOpHo9MqJor3BXAGNaPUs83CuVp9VISFkSjyRfiTpmKuAYGJB7S7hOxw==