Update package.json for publishing (#4284)

* Update package.json for publishing

* Use custom readme file for npm

* Update repository URLs

* Script cleanup

* Use name @posit/shiny

npm-README.md

@@ -0,0 +1,14 @@
+@posit/shiny
+============
+
+This npm package contains TypeScript type definitions for Shiny's client-side JavaScript libraries.
+
+It does not include the Shiny framework itself, though that may change in the future.
+
+[Shiny](https://github.com/rstudio/shiny) is a web application framework for both R and Python, developed by Posit PBC.
+
+## Installation
+
+```bash
+npm install @posit/shiny
+```

package.json

@@ -1,17 +1,17 @@
 {
-  "private": true,
-  "homepage": "https://shiny.rstudio.com",
-  "repository": "github:rstudio/shiny",
-  "name": "@types/rstudio-shiny",
+  "homepage": "https://shiny.posit.co",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/rstudio/shiny.git"
+  },
+  "name": "@posit/shiny",
   "version": "1.11.1-alpha.9000",
   "license": "GPL-3.0-only",
   "main": "",
   "browser": "",
   "types": "srcts/types/extras/globalShiny.d.ts",
   "files": [
-    "DESCRIPTION",
     "LICENSE",
-    "NEWS.md",
     "srcts/types/**/*.d.ts"
   ],
   "engines": {
@@ -69,7 +69,9 @@
     "build_types": "tsc -p tsconfig.json",
     "coverage_detailed": "npx --yes type-check --detail",
     "coverage": "type-coverage -p tsconfig.json --at-least 90",
-    "circular": "npx --yes dpdm --transform ./srcts/src/index.ts"
+    "circular": "npx --yes dpdm --transform ./srcts/src/index.ts",
+    "prepack": "cp README.md README-orig.md && cp npm-README.md README.md",
+    "postpack": "test -f README-orig.md && cp README-orig.md README.md && rm README-orig.md"
   },
   "prettier": {
     "plugins": [