Add generated typings for from.js file. (#80)

* Generate typings for from.js
* Add generated typings to files section and fix linter issue.
* Remove domexception installation from ci workflow
* Fix for .d.ts output
Co-authored-by: Jimmy Wärting <jimmy@warting.se>

package.json

@@ -6,14 +6,15 @@
     "files": [
         "from.js",
         "index.js",
-        "index.d.ts"
+        "index.d.ts",
+        "from.d.ts"
     ],
     "scripts": {
         "lint": "xo",
         "test": "xo && ava",
         "report": "c8 --reporter json --reporter text ava",
         "coverage": "c8 --reporter json --reporter text ava && codecov -f coverage/coverage-final.json",
-        "prepublishOnly": "tsc --declaration --emitDeclarationOnly --allowJs index.js"
+        "prepublishOnly": "tsc --declaration --emitDeclarationOnly --allowJs index.js from.js"
     },
     "repository": "https://github.com/node-fetch/fetch-blob.git",
     "keywords": [
@@ -33,6 +34,7 @@
         "ava": "^3.8.2",
         "c8": "^7.2.0",
         "codecov": "^3.7.0",
+        "domexception": "^2.0.1",
         "get-stream": "^5.1.0",
         "node-fetch": "^2.6.0",
         "typescript": "^3.9.5",