update dependencies

package.json

@@ -39,9 +39,9 @@
         "url": "https://opencollective.com/node-fetch"
     },
     "devDependencies": {
-		"@babel/core": "^7.8.7",
-		"@babel/preset-env": "^7.8.7",
-		"@babel/register": "^7.8.6",
+        "@babel/core": "^7.9.0",
+        "@babel/preset-env": "^7.9.0",
+        "@babel/register": "^7.9.0",
         "@pika/pack": "^0.5.0",
         "@pika/plugin-standard-pkg": "^0.9.2",
         "abort-controller": "^3.0.0",
@@ -53,13 +53,13 @@
         "codecov": "^3.6.5",
         "cross-env": "^7.0.2",
         "form-data": "^3.0.0",
-		"mocha": "^7.1.0",
+        "mocha": "^7.1.1",
         "nyc": "^15.0.0",
         "parted": "^0.1.1",
         "promise": "^8.1.0",
         "resumer": "0.0.0",
         "string-to-arraybuffer": "^1.0.2",
-		"xo": "^0.28.0"
+        "xo": "^0.28.1"
     },
     "dependencies": {
         "data-uri-to-buffer": "^3.0.0",
@@ -85,7 +85,8 @@
             "unicorn/prevent-abbreviations": 0
         },
         "ignores": [
-			"dist"
+            "dist",
+            "index.d.ts"
         ],
         "overrides": [
             {