feat(loader): added basic schema loader and validator from JSON intro…

…spection file

package.json

@@ -47,5 +47,11 @@
     "commitizen": {
       "path": "./node_modules/cz-conventional-changelog"
     }
+  },
+  "dependencies": {
+    "@types/node": "^0.0.2",
+    "commander": "^2.9.0",
+    "graphql": "^0.8.2",
+    "typed-graphql": "^1.0.2"
   }
 }

src/index.ts

@@ -1,3 +1,5 @@
 #!/usr/bin/env node
 
-console.log('test');
+import {loadSchema} from './scheme-loader';
+
+console.log(loadSchema('./schema.json'));

src/scheme-loader.ts

@@ -0,0 +1,24 @@
+import {buildClientSchema, GraphQLSchema, IntrospectionQuery} from 'graphql';
+import * as fs from 'fs';
+
+export const loadFileContent = (filePath: string): IntrospectionQuery => {
+  if (fs.existsSync(filePath)) {
+    return <IntrospectionQuery>(JSON.parse(fs.readFileSync(filePath, 'utf8')));
+  } else {
+    throw new Error(`File ${filePath} does not exists!`);
+  }
+};
+
+
+export const validateSchema = (schema: IntrospectionQuery) => {
+  if (!schema.__schema) {
+    throw new Error('Invalid schema provided!');
+  }
+};
+
+export const loadSchema = (filePath: string): GraphQLSchema => {
+  const schemaObject = loadFileContent(filePath);
+  validateSchema(schemaObject);
+
+  return buildClientSchema(schemaObject);
+};

tsconfig.json

@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "experimentalDecorators": true,
-    "module": "es2015",
+    "module": "commonjs",
     "target": "es5",
     "lib": ["es6", "dom"],
     "noImplicitAny": false,

typings.d.ts

@@ -0,0 +1,2 @@
+/// <reference types="typed-graphql" />
+/// <reference types="@types/node" />

yarn.lock

@@ -2,6 +2,10 @@
 # yarn lockfile v1
 
 
+"@types/node@^0.0.2":
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-0.0.2.tgz#0da4934902fbf68a97a0f53204a35ad2224917bc"
+
 ansi-align@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/ansi-align/-/ansi-align-1.1.0.tgz#2f0c1658829739add5ebb15e6b0c6e3423f016ba"
@@ -75,6 +79,12 @@ colors@^1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.1.2.tgz#168a4701756b6a7f51a12ce0c97bfa28c084ed63"
 
+commander@^2.9.0:
+  version "2.9.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.9.0.tgz#9c99094176e12240cb22d6c5146098400fe0f7d4"
+  dependencies:
+    graceful-readlink ">= 1.0.0"
+
 [email protected]:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
@@ -207,6 +217,16 @@ graceful-fs@^4.1.2:
   version "4.1.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
+"graceful-readlink@>= 1.0.0":
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/graceful-readlink/-/graceful-readlink-1.0.1.tgz#4cafad76bc62f02fa039b2f94e9a3dd3a391a725"
+
+graphql@^0.8.2:
+  version "0.8.2"
+  resolved "https://registry.yarnpkg.com/graphql/-/graphql-0.8.2.tgz#eb1bb524b38104bbf2c9157f9abc67db2feba7d2"
+  dependencies:
+    iterall "1.0.2"
+
 has-ansi@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/has-ansi/-/has-ansi-2.0.0.tgz#34f5049ce1ecdf2b0649af3ef24e45ed35416d91"
@@ -272,6 +292,10 @@ isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
 
+[email protected]:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/iterall/-/iterall-1.0.2.tgz#41a2e96ce9eda5e61c767ee5dc312373bb046e91"
+
 latest-version@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/latest-version/-/latest-version-2.0.0.tgz#56f8d6139620847b8017f8f1f4d78e211324168b"
@@ -526,6 +550,10 @@ tslint@^4.0.2:
     underscore.string "^3.3.4"
     update-notifier "^1.0.2"
 
+typed-graphql@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/typed-graphql/-/typed-graphql-1.0.2.tgz#4c0f788775d552df4d4ec3d73f25469252f40fb8"
+
 typescript@^2.0.10:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.1.1.tgz#41c2b64472f529331b2055c0424862b44ce58d42"