Add a option to make deprecated input args visible

This caught us out, as when we removed a deprecated input arg is wasn't as visible as we'd have liked.

By adding this option, we can have visiblity of deprecated input args.

Author: ccouzens

README.md

@@ -31,6 +31,7 @@ $ graphql-schema-diff --help
     --left-schema-header         Header to send to left remote schema source
     --right-schema-header        Header to send to right remote schema source
     --sort-schema, -s            Sort schemas prior to diffing
+    --input-value-deprecation    Include deprecated input value fields   
 
   Examples
     $ graphql-schema-diff https://example.com/graphql schema.graphql

npm-shrinkwrap.json

@@ -44,7 +44,7 @@
     "diff2html": "^3.4.35",
     "disparity": "^3.2.0",
     "fs-extra": "^11.1.1",
-    "graphql": "^16.7.1",
+    "graphql": "^16.8.1",
     "meow": "^9.0.0",
     "node-fetch": "^2.6.11"
   },

package.json

@@ -20,6 +20,7 @@ const cli = meow(
     --left-schema-header \t Header to send to left remote schema source
     --right-schema-header \t Header to send to right remote schema source
     --sort-schema, -s \t\t Sort schemas prior to diffing
+    --input-value-deprecation \t Include deprecated input value fields
 
   Examples
     $ graphql-schema-diff https://example.com/graphql schema.graphql
@@ -67,6 +68,9 @@ const cli = meow(
       version: {
         alias: "v",
       },
+      inputValueDeprecation: {
+        type: "boolean",
+      },
     },
   },
 );
@@ -124,6 +128,7 @@ getDiff(leftSchemaLocation, rightSchemaLocation, {
     headers: parseHeaders(rightSchemaHeader),
   },
   sortSchema: cli.flags.sortSchema as boolean,
+  inputValueDeprecation: cli.flags.inputValueDeprecation as boolean,
 })
   .then(async (result) => {
     if (result === undefined) {

src/cli.ts

@@ -6,7 +6,7 @@ import {
 } from "graphql";
 import { lexicographicSortSchema } from "graphql/utilities";
 import disparity from "disparity";
-import { loadSchema } from "@graphql-tools/load";
+import { LoadSchemaOptions, loadSchema } from "@graphql-tools/load";
 import { UrlLoader } from "@graphql-tools/url-loader";
 import { JsonFileLoader } from "@graphql-tools/json-file-loader";
 import { printSchemaWithDirectives } from "@graphql-tools/utils";
@@ -31,18 +31,22 @@ export interface DiffOptions {
   };
   headers?: Headers;
   sortSchema?: boolean;
+  inputValueDeprecation?: boolean;
 }
 
 export async function getDiff(
   leftSchemaLocation: string,
   rightSchemaLocation: string,
   options: DiffOptions = {},
 ): Promise<DiffResponse | undefined> {
-  const getSchemaOptions = (customHeaders?: Headers) => ({
+  const getSchemaOptions: (
+    customHeaders?: Headers,
+  ) => Omit<LoadSchemaOptions, "loaders"> = (customHeaders) => ({
     headers: { ...options.headers, ...customHeaders },
     skipGraphQLImport: false,
     descriptions: false,
     customFetch: fetch,
+    inputValueDeprecation: options.inputValueDeprecation,
   });
   const leftSchemaOptions = getSchemaOptions(options.leftSchema?.headers);
   const rightSchemaOptions = getSchemaOptions(options.rightSchema?.headers);