asd

Author: askbeka

.editorconfig

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+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+end_of_line = lf
+# editorconfig-tools is unable to ignore longs strings or urls
+max_line_length = null

.gitignore

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+node_modules

package.json

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+{
+  "name": "graphql-demo",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "dependencies": {
+    "forever": "^0.15.3",
+    "graphql-yoga": "^1.16.7"
+  },
+  "scripts": {
+    "start": "forever -w --watchDirectory ./src ./src/index.js"
+  }
+}

resolvers.js.bkp

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+const accounts = [
+  { name: 'Beknar' },
+  { name: 'Roman' },
+];
+
+const transactions = [
+  { id: 0, from: 'Roman', to: 'Beknar', amount: 1000 },
+];
+
+module.exports = {
+  Query: {
+    accounts: () => accounts,
+    transactions: () => transactions,
+  },
+  Mutation: {
+    addAccount: (parent, { name }) => {
+      const newAccount = { id: accounts.length, name };
+      accounts.push(newAccount);
+
+      return account;
+    },
+    sendMoney: (parent, { from, to, amount }, { pubsub }) => {
+      const newTransaction = { id: transactions.length, from, to, amount };
+      transactions.push(newTransaction);
+
+      pubsub.publish(to, { newTransaction: newTransaction });
+
+      return newTransaction;
+    },
+  },
+  Subscription: {
+    newTransaction: {
+      subscribe: (parent, { name }, { pubsub }) => pubsub.asyncIterator(name),
+    }
+  },
+  Account: {
+    sent: (parent) => transactions.filter(tr => parent.name === tr.from),
+    received: (parent) => transactions.filter(tr => parent.name === tr.name),
+  },
+  Transaction: {
+    from: (parent) => accounts.find(acc => acc.name === parent.from),
+    to: (parent) => accounts.find(acc => acc.name === parent.to),
+  }
+}

schema.graphql.bkp

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+type Query {
+  accounts: [Account!]!
+  transactions: [Transaction!]!
+}
+
+type Mutation {
+  addAccount(name: String!): Account
+  sendMoney(from: String!, to: String!, amount: Float!): Transaction!
+}
+
+type Subscription {
+  newTransaction(name: String!): Transaction,
+}
+
+type Account {
+  name: String!
+  sent: [Transaction!]!
+  received: [Transaction]!
+}
+
+type Transaction {
+  id: ID!
+  from: Account!
+  to: Account!
+  amount: Float!
+}

src/index.js

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+const { GraphQLServer, PubSub } = require('graphql-yoga')
+const resolvers = require('./resolvers')
+
+
+pubsub = new PubSub();
+const server = new GraphQLServer({
+  typeDefs: './src/schema.graphql',
+  resolvers,
+  context: {
+    pubsub,
+  },
+})
+
+server.start(() => console.log('Server is running on http://localhost:4000'))

src/resolvers.js

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+module.exports = {
+}