Added mongodb example with typescript

examples/mongodb-ts/.env

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+SERVER_PORT=4000
+DB_URI=mongodb://User:pwd1234@localhost:27017/graphqlyoga
+NODE_ENV=development

examples/mongodb-ts/docker-compose.yml

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+version: "3"
+services:
+  db:
+    image: "bitnami/mongodb:latest"
+    ports:
+      - '27017:27017'
+    networks:
+      - net
+    environment:
+      MONGODB_USERNAME: User
+      MONGODB_PASSWORD: pwd1234
+      MONGODB_DATABASE: graphqlyoga
+    volumes:
+      - './containers/mongo:/data/db'
+networks:
+  net:

examples/mongodb-ts/package.json

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+{
+  "name": "mongodb-ts",
+  "version": "1.0.0",
+  "description": "Graphql-yoga example mongodb typescript",
+  "main": "src/dist/index.js",
+  "dependencies": {
+    "dotenv": "^8.1.0",
+    "graphql-yoga": "^1.18.3",
+    "mongoose": "^5.7.3"
+  },
+  "devDependencies": {
+    "@types/dotenv": "^6.1.1",
+    "@types/express": "^4.17.1",
+    "@types/graphql-iso-date": "^3.3.3",
+    "@types/mongodb": "^3.3.6",
+    "@types/mongoose": "^5.5.20",
+    "@types/node": "^12.7.11",
+    "@types/ws": "^6.0.3",
+    "nodemon": "^1.19.3",
+    "ts-node": "^8.4.1",
+    "typescript": "^3.6.3"
+  },
+  "scripts": {
+    "prod": "node src/dist/index.js",
+    "dev": "nodemon -r dotenv/config src/dist/index.js",
+    "build": "tsc"
+  },
+  "author": "Chris Tvedt",
+  "license": "ISC",
+  "homepage": "https://github.com/ProgrammerChris/"
+}

examples/mongodb-ts/readme.md

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+# GraphQL-Yoga MongoDB Typescript Example
+
+## Build
+
+- Use `npm run build` to compile TS to JS (Putting all JS files in "dist"-directory)
+
+## Running in Development
+
+- Use `docker-compose up -d` to setup and start MongoDB
+- Use `npm run dev` to start the server in Developer Mode. this will run the index.js in "dist"-directory
+
+## Serving it for Production
+
+- Use `docker-compose up -d` to setup and start MongoDB
+- Use `npm run prod` to start the server in Prod Mode. this will run the index.js in "dist"-directory
+
+### Dependencies
+
+- Graphql-Yoga
+- Mongoose
+- Typescript
+- ts-node
+- dotenv
+- Nodemon

examples/mongodb-ts/src/db/index.ts

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+import dotenv from 'dotenv'
+import mongoose from 'mongoose';
+import { Post } from './post';
+
+dotenv.config();
+
+// SET UP Mongoose Promises.
+mongoose.Promise = global.Promise;
+
+export const startDB = mongoose.connect(`${process.env.DB_URI}`, { useNewUrlParser: true, useUnifiedTopology: true, useCreateIndex: true} );
+
+export const models = {
+  Post,
+}

examples/mongodb-ts/src/db/post.ts

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+import mongoose from 'mongoose';
+
+const PostSchema = new mongoose.Schema({
+  title: {
+    type: String,
+    required: true,
+    unique: true,
+  },
+  desc: {
+    type: String,
+    required: true,
+  },
+  author: {
+    type: String,
+    required: true,
+  },
+  createdOn: {
+    type: Date,
+    default: Date.now
+  },
+});
+
+export const Post = mongoose.model('Post', PostSchema);

examples/mongodb-ts/src/graphql/resolvers.ts

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+import { models } from '../db'
+import { Post } from '../db/post'
+
+
+export const resolvers = {
+  Query: {
+    posts: async () => {
+      const Posts = await models.Post.find({});
+      console.log(Posts);
+      return Posts;
+    },
+  },
+  Mutation: {
+    createPost: async (root : any,  args : any) => {
+      const argsPost = new Post(args);
+      const post = await models.Post.findOne({ argsPost });
+
+      if (post) {
+        throw new Error('Please provide a unique title.');        
+      }
+
+      // create a new post
+      const newPost = new models.Post(args);
+
+      // save the post
+      try {
+        await newPost.save();
+      } catch (e) {
+        throw new Error('Cannot Save Post!!!');
+      }
+
+      return true;
+    },
+  },
+};

examples/mongodb-ts/src/graphql/schema.graphql

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+type Query {
+  posts: [Post!]!
+}
+
+type Mutation {
+  createPost(title: String!, desc: String!, author: String!): Boolean!
+}
+
+# Schema Types
+type Post {
+  id: String!
+  title: String!
+  desc: String!
+  author: String!
+  createdOn: String!
+}

examples/mongodb-ts/src/index.ts

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+import dotenv from 'dotenv';
+import { GraphQLServer } from 'graphql-yoga';
+import { startDB, models } from './db';
+import { resolvers }  from './graphql/resolvers';
+
+dotenv.config();
+
+const db = startDB;
+
+const context = {
+  models,
+  db,
+};
+
+const Server = new GraphQLServer({
+  typeDefs: './src/graphql/schema.graphql',
+  resolvers,
+  context,
+});
+
+// options
+const opts = {
+  port: process.env.SERVER_PORT,
+};
+
+
+Server.start(opts, ({ port }) => {
+  console.log('Server is running on http://localhost:' + port);
+});

examples/mongodb-ts/tsconfig.json

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+{
+  "compilerOptions": {
+    /* Basic Options */
+    // "incremental": true,                   /* Enable incremental compilation */
+    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019' or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
+    // "lib": [],                             /* Specify library files to be included in the compilation. */
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    "outDir": "./src/dist",                        /* Redirect output structure to the directory. */
+    // "rootDir": "./",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "composite": true,                     /* Enable project compilation */
+    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
+    // "removeComments": true,                /* Do not emit comments to output. */
+    // "noEmit": true,                        /* Do not emit outputs. */
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": true,                           /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    "rootDirs": ["./src"],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+  }
+}