replace .ts with .d.ts declaration file

dist/imgix-core-js.d.ts

@@ -0,0 +1,27 @@
+// Type definitions for imgix-core-js.js
+
+// export as namespace ImgixClient;
+
+/*~ This declaration specifies that the class constructor function
+ *~ is the exported object from the file
+ */
+
+/*~ Write your module's methods and properties in this class */
+declare class ImgixClient {
+    domain: string;
+    useHTTPS: boolean;
+    includeLibraryParam: boolean;
+    secureURLToken: string;
+
+    constructor(opts: {domain: string; secureURLToken?: string; useHTTPS?: boolean; includeLibraryParam?: boolean;});
+
+
+    buildURL(path: string, params?: {}): string;
+    _sanitizePath(path: string): string;
+    _buildParams(params: {}): string;
+    _signParams(path: string, queryParams?: {}): string;
+    buildSrcSet(path: string, params?: {}): string;
+    _buildSrcSetPairs(path: string, params?: {}): string;
+    _buildDPRSrcSet(path: string, params?: {}): string;
+}
+export = ImgixClient;

src/tsconfig.json → dist/tsconfig.json

@@ -2,9 +2,9 @@
     "compilerOptions": {
         "outDir": "../dist",
         // "rootDir": "./src",
-        "allowJs": true,
-        "target": "es5",
-        "module": "CommonJS",
+        // "allowJs": true,
+        "target": "es2015",
+        "module": "umd",
         // types option has been previously configured
         "types": [
             // add node as an option
@@ -17,6 +17,9 @@
         //     "node_modules/@types"
         //  ]
     },
+    "files": [
+        "imgix-core-js.d.ts"
+    ],
     "include": [
         "./imgix-core-js.ts"
     ]

package.json

@@ -5,22 +5,23 @@
   "repository": "https://github.com/imgix/imgix-core-js",
   "scripts": {
     "assert_version": "node assert_version.js",
-    "compile": "mkdir -p dist && uglifyjs ./src/imgix-core-js.js -o ./dist/imgix-core-js.min.js && tsc -p src",
+    "compile": "mkdir -p dist && uglifyjs ./src/imgix-core-js.js -o ./dist/imgix-core-js.min.js && tsc -p dist",
     "prepublish": "npm run compile && npm run assert_version",
     "test": "mocha"
   },
   "main": "dist/imgix-core-js.js",
+  "types": "dist/imgix-core-js.d.ts",
   "dependencies": {
     "js-base64": "^2.1.9",
-    "md5": "^2.2.1"
+    "md5": "^2.2.1",
+    "typescript": "^3.6.3",
+    "@types/node": "^12.7.8"
   },
   "license": "BSD-2-Clause",
   "devDependencies": {
-    "@types/node": "^12.7.8",
     "mocha": "6.2.1",
     "phantomjs": "2.1.7",
     "sinon": "7.5.0",
-    "typescript": "^3.6.3",
     "uglify-js": "3.6.0"
   }
 }