feat(stitching): enable proxying uploads

Adds a new scalar for the gateway and a new server to server link that
allows proxying of remote file uploads using the graphql-upload format.

.npmignore

@@ -2,6 +2,8 @@
 !dist/
 !dist/*
 !dist/generate/*
+!dist/links/*
+!dist/scalars/*
 !dist/stitching/*
 !dist/transforms/*
 !dist/utils/*

package.json

@@ -50,28 +50,40 @@
   "homepage": "https://github.com/apollostack/graphql-tools#readme",
   "dependencies": {
     "apollo-link": "^1.2.13",
+    "apollo-link-http-common": "^0.2.15",
     "apollo-utilities": "^1.3.3",
     "deprecated-decorator": "^0.1.6",
+    "extract-files": "^6.0.0",
+    "form-data": "^3.0.0",
     "iterall": "^1.2.2",
+    "node-fetch": "^2.6.0",
     "uuid": "^3.3.3"
   },
   "peerDependencies": {
     "graphql": "^14.2.0"
   },
   "devDependencies": {
+    "@types/apollo-upload-client": "^8.1.3",
     "@types/chai": "^4.2.7",
     "@types/dateformat": "^3.0.1",
+    "@types/express": "^4.17.2",
+    "@types/extract-files": "^3.1.0",
+    "@types/graphql-upload": "^8.0.3",
     "@types/mocha": "^5.2.7",
     "@types/node": "^12.12.21",
+    "@types/node-fetch": "^2.5.4",
+    "@types/supertest": "^2.0.8",
     "@types/uuid": "^3.4.6",
-    "@types/zen-observable": "^0.8.0",
+    "apollo-upload-client": "^12.1.0",
     "body-parser": "^1.19.0",
     "chai": "^4.2.0",
     "dateformat": "^3.0.3",
     "express": "^4.17.1",
+    "express-graphql": "^0.9.0",
     "graphql": "^14.5.8",
     "graphql-subscriptions": "^1.1.0",
     "graphql-type-json": "^0.3.1",
+    "graphql-upload": "^9.0.0",
     "istanbul": "^0.4.5",
     "mocha": "^6.2.2",
     "prettier": "^1.19.1",
@@ -80,6 +92,7 @@
     "source-map-support": "^0.5.16",
     "standard-version": "^7.0.1",
     "tslint": "^5.20.1",
-    "typescript": "3.7.3"
+    "typescript": "3.7.3",
+    "zen-observable-ts": "^0.8.20"
   }
 }

src/index.ts

@@ -1,6 +1,8 @@
 export * from './Interfaces';
+export * from './links';
 export * from './makeExecutableSchema';
 export * from './mock';
+export * from './scalars';
 export * from './stitching';
 export * from './transforms';
 export * from './utils';