make this package a polyfill

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Changelog
 
 > **Tags:**
+>
 > - [New Feature]
 > - [Bug Fix]
 > - [Breaking Change]
@@ -12,3 +13,6 @@
 **Note**: Gaps between patch versions are faulty/broken releases.
 **Note**: A feature tagged as Experimental is in a high state of flux, you're at risk of it changing without notice.
 
+# 0.1.0
+
+Initial release

README.md

@@ -1 +1,9 @@
-An alias of unknown that works with legacy typescript versions (before 3.1)
+A polyfill of `unknown` that works with legacy typescript versions (before 3.0)
+
+```ts
+export type mixed = { [key: string]: any } | object | number | string | boolean | symbol | undefined | null | void
+
+declare global {
+  type unknown = mixed
+}
+```

package.json

@@ -1,20 +1,12 @@
 {
   "name": "unknown-ts",
-  "version": "0.0.2",
-  "description": "An alias of unknown that works with legacy typescript versions (before 3.1)",
+  "version": "0.1.0",
+  "description": "A polyfill of unknown that works with legacy typescript versions (before 3.0)",
   "files": [
-    "lib",
-    "typesVersions"
+    "lib"
   ],
   "main": "lib/index.js",
   "typings": "lib/index.d.ts",
-  "typesVersions": {
-    ">=3.1": {
-      "*": [
-        "typesVersions/3.1.x/index.d.ts"
-      ]
-    }
-  },
   "scripts": {
     "lint": "tslint -p tsconfig.json src/**/*.ts",
     "prettier": "prettier --no-semi --single-quote --print-width 120 --parser typescript --list-different \"{src,test}/**/*.ts\"",
@@ -37,8 +29,16 @@
     "rimraf": "^2.6.2",
     "tslint": "^5.9.1",
     "tslint-config-standard": "^7.0.0",
-    "typescript": "^3.1.3"
+    "typescript": "^2.9.2"
   },
-  "tags": [],
-  "keywords": []
+  "tags": [
+    "typescript",
+    "unknown",
+    "polyfill"
+  ],
+  "keywords": [
+    "typescript",
+    "unknown",
+    "polyfill"
+  ]
 }

src/index.ts

@@ -1 +1,5 @@
 export type mixed = { [key: string]: any } | object | number | string | boolean | symbol | undefined | null | void
+
+declare global {
+  type unknown = mixed
+}