Revert "Merge pull request #142 from tomoto/feat/infer-result-type-with-typescript"

This reverts commit 072d6f5, reversing
changes made to afd78c2.

Author: avoidwork

filesize.d.ts

@@ -1,10 +1,10 @@
-// Type definitions for filesize 8.0.3
+// Type definitions for filesize 6.0.1
 // Project: https://github.com/avoidwork/filesize.js, https://filesizejs.com
 // Definitions by: Giedrius Grabauskas <https://github.com/GiedriusGrabauskas>
 //                 Renaud Chaput <https://github.com/renchap>
 //                 Roman Nuritdinov <https://github.com/Ky6uk>
 //                 Sam Hulick <https://github.com/ffxsam>
-//                 Tomoto S. Washio <https://github.com/tomoto>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare var fileSize: Filesize.Filesize;
 export = fileSize;
@@ -100,24 +100,8 @@ declare namespace Filesize {
         roundingMethod?: "round" | "floor" | "ceil";
     }
 
-    // Result type inference from the output option
-    interface ResultTypeMap {
-        array: [number, string];
-        exponent: number;
-        object: {
-            value: number,
-            symbol: string,
-            exponent: number,
-            unit: string,
-        };
-        string: string;
-    }
-    type DefaultOutput<O extends Options> = Exclude<O["output"], keyof ResultTypeMap> extends never ? never : "string"
-    type CanonicalOutput<O extends Options> = Extract<O["output"], keyof ResultTypeMap> | DefaultOutput<O>
-
     interface Filesize {
-        (bytes: number): string;
-        <O extends Options>(bytes: number, options: O): ResultTypeMap[CanonicalOutput<O>];
-        partial: <O extends Options>(options: O) => ((bytes: number) => ResultTypeMap[CanonicalOutput<O>]);
+        (bytes: number, options?: Options): string;
+        partial: (options: Options) => ((bytes: number) => string);
     }
 }

package.json

@@ -27,10 +27,10 @@
     "build": "rollup -c",
     "watch": "rollup -c -w",
     "changelog": "auto-changelog -p",
-    "test": "npm run build && npm run lint && npm run test:unit && npm run test:type",
+    "test": "npm run build && npm run lint && npm run test:unit",
     "test:unit": "nodeunit test/*.js",
-    "test:type": "npx tsc -p test",
-    "lint": "eslint test/*.js src/*.js"
+    "lint": "eslint test/*.js src/*.js",
+    "types": "npx typescript src/filesize.js --declaration --allowJs --emitDeclarationOnly --outDir ./"
   },
   "devDependencies": {
     "@babel/core": "^7.15.5",