Add Active Storage types

package.json

@@ -13,6 +13,7 @@
   },
   "devDependencies": {
     "@babel/preset-env": "^7.7.1",
+    "@types/activestorage": "^5.2.2",
     "@types/color": "^3.0.0",
     "@types/enzyme": "^3.1.9",
     "@types/enzyme-to-json": "^1.5.1",

tsconfig.json

@@ -10,7 +10,7 @@
     "experimentalDecorators": true,
     "baseUrl": "./",
     "lib": ["dom","es5", "scripthost", "es2015.promise"],
-    "paths": { "*": [ "./types/*"] },
+    "paths": { "*": [ "./types/*"], "@rails/activestorage": ["./types/rails__activestorage"] },
     "typeRoots" : [
       "node_modules/@types",
       "./types"]

types/rails__activestorage/index.d.ts

@@ -0,0 +1,3 @@
+import {start, DirectUpload, DirectUploadDelegate, Blob} from 'activestorage';
+
+export {start, DirectUpload, DirectUploadDelegate, Blob};

yarn.lock

@@ -1021,6 +1021,11 @@
   resolved "https://registry.yarnpkg.com/@sinonjs/text-encoding/-/text-encoding-0.7.1.tgz#8da5c6530915653f3a1f38fd5f101d8c3f8079c5"
   integrity sha512-+iTbntw2IZPb/anVDbypzfQa+ay64MW0Zo8aJ8gZPWMMK6/OubMVb6lUPMagqjOPnmtauXnFCACVl3O7ogjeqQ==
 
+"@types/activestorage@^5.2.2":
+  version "5.2.2"
+  resolved "https://registry.yarnpkg.com/@types/activestorage/-/activestorage-5.2.2.tgz#82473e47c25f3e1488400dca69b982a1591dbac0"
+  integrity sha512-qsyspA6wVRz8tAN4lYaPXrlcZ1AcqbQyBfNNg/zEmQbMu5/ch8f2rspGLK+A4ZhgoRXG0/ivSPeZ/a+1g10U4w==
+
 "@types/babel__core@^7.1.0":
   version "7.1.7"
   resolved "https://registry.yarnpkg.com/@types/babel__core/-/babel__core-7.1.7.tgz#1dacad8840364a57c98d0dd4855c6dd3752c6b89"