Add spellchecker (#2297)

Author: IvanGoncharov

README.md

@@ -143,6 +143,8 @@ GraphQL.js is [MIT-licensed](https://github.com/graphql/graphql-js/blob/master/L
 
 The `*.d.ts` files in this project are based on [DefinitelyTyped](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/54712a7e28090c5b1253b746d1878003c954f3ff/types/graphql) definitions written by:
 
+<!--- spell-checker:disable -->
+
 - TonyYang https://github.com/TonyPythoneer
 - Caleb Meredith https://github.com/calebmer
 - Dominic Watson https://github.com/intellix

cspell.json

@@ -0,0 +1,85 @@
+{
+  "language": "en",
+  "ignorePaths": [
+    "src/__fixtures__/github-schema.graphql",
+    "src/__fixtures__/github-schema.json"
+  ],
+  "words": [
+    "jsutils",
+    "tsutils",
+    "iterall",
+    "noflow",
+
+    // Different names used inside tests
+    "Skywalker",
+    "Leia",
+    "Wilhuff",
+    "Tarkin",
+    "Artoo",
+    "Threepio",
+    "Odie",
+    "Odie's",
+    "Damerau",
+    "Alderaan",
+    "Tatooine",
+    "astromech",
+    "yuzhi",
+
+    // TODO: remove bellow words
+    "Graphi", // GraphiQL
+    "QL's", // GraphQL's
+    "QLIs", // GraphQLIs*
+    "QLID", // GraphQLID
+    "iface",
+    "Reqs",
+    "ORing",
+    "FXXX",
+    "XXXF",
+    "bfnrt",
+
+    // TODO: contribute to upstream dictionaries
+    "ASTs",
+    "adjacencies",
+    "bigint",
+    "bugfixes",
+    "contravariant",
+    "dedent",
+    "deserialized",
+    "dirent",
+    "docstring",
+    "erroring",
+    "filepath",
+    "filepaths",
+    "hardcoded",
+    "heredoc",
+    "lexable",
+    "lexed",
+    "lexes",
+    "lexing",
+    "memoed",
+    "memoization",
+    "memoized",
+    "memoizes",
+    "memoizing",
+    "nullability",
+    "nullish",
+    "passthrough",
+    "polyfill",
+    "promisify",
+    "pubsub",
+    "punctuator",
+    "punctuators",
+    "recurse",
+    "recursing",
+    "refetch",
+    "stateful",
+    "stringifies",
+    "subfields",
+    "subgraphs",
+    "subtrees",
+    "subtyped",
+    "superset",
+    "undefine",
+    "unparsed"
+  ]
+}

package.json

@@ -24,8 +24,8 @@
     "node": ">= 10.x"
   },
   "scripts": {
-    "test": "npm run prettier:check && npm run lint && npm run check && npm run testonly && npm run check:ts",
-    "test:ci": "yarn check --integrity && npm run prettier:check && npm run lint -- --no-cache && npm run check && npm run testonly:cover && npm run check:ts && npm run build",
+    "test": "npm run prettier:check && npm run lint && npm run check && npm run testonly && npm run check:ts && npm run check:spelling",
+    "test:ci": "yarn check --integrity && npm run prettier:check && npm run lint -- --no-cache && npm run check && npm run testonly:cover && npm run check:ts && npm run check:spelling && npm run build",
     "testonly": "mocha --full-trace src/**/__tests__/**/*-test.js",
     "testonly:cover": "nyc npm run testonly",
     "lint": "eslint --cache src resources",
@@ -35,6 +35,7 @@
     "check": "flow check",
     "check:ts": "dtslint src",
     "check:cover": "node resources/check-cover.js && nyc report --nycrc-path .nycflowrc.yml",
+    "check:spelling": "cspell \"./{src/**/,resources**/,}*.{js,ts,md,graphql}\"",
     "build": "node resources/build.js",
     "changelog": "node resources/gen-changelog.js",
     "preversion": ". ./resources/checkgit.sh",
@@ -52,6 +53,7 @@
     "@babel/register": "7.6.2",
     "babel-eslint": "10.0.3",
     "chai": "4.2.0",
+    "cspell": "4.0.37",
     "dtslint": "2.0.2",
     "eslint": "6.7.2",
     "eslint-plugin-flowtype": "4.5.2",