[meta] add npmignore and safe-publish-latest

Author: ljharb

.gitignore

@@ -6,3 +6,5 @@ npm-debug.log
 npm-shrinkwrap.json
 package-lock.json
 yarn.lock
+
+.npmignore

package.json

@@ -6,15 +6,15 @@
 		"url": "https://github.com/crypto-browserify/browserify-rsa/issues"
 	},
 	"license": "MIT",
-	"files": [
-		"index.js"
-	],
 	"main": "index.js",
 	"repository": {
 		"type": "git",
 		"url": "https://github.com:crypto-browserify/browserify-rsa.git"
 	},
 	"scripts": {
+		"prepack": "npmignore --auto --commentLines=autogenerated",
+		"prepublish": "not-in-publish || npm run prepublishOnly",
+		"prepublishOnly": "safe-publish-latest",
 		"lint": "eslint --ext=js,mjs .",
 		"pretest": "npm run lint",
 		"test": "npm run tests-only",
@@ -31,7 +31,10 @@
 		"@ljharb/eslint-config": "^21.1.1",
 		"encoding": "^0.1.13",
 		"eslint": "=8.8.0",
+		"in-publish": "^2.0.1",
+		"npmignore": "^0.3.1",
 		"parse-asn1": "^5.1.7",
+		"safe-publish-latest": "^2.0.0",
 		"tape": "^5.9.0"
 	},
 	"engines": {
@@ -44,5 +47,13 @@
 		"commitLimit": false,
 		"backfillLimit": false,
 		"hideCredit": true
+	},
+	"publishConfig": {
+		"ignore": [
+			".github/workflows",
+			"test",
+			".eslintrc",
+			".github"
+		]
 	}
 }