config, readme and working example, and faker typings in config

README.md

@@ -25,11 +25,47 @@ Just run the CLI on your schema.
 demeter schema.graphql
 ```
 
+Mock server should be running on port 4000
+
+## Configuration
+Demeter will automatically create config file on the first start `.graphql.demeter.js`.
+
+![](./readme.png)
+
+As you can see if you provide type it will autocomplete faker values
+
+```js
+/** @type {import('graphql-demeter-core').FakerConfig} */
+const config = {
+  objects: {
+    Card:{
+      description:{
+        type:"values",
+        values:["Very powerful card", "Most fire resistant character", "Good melee fighter"]
+      },
+      name:{
+        type:"values",
+        values:["Zeus", "Athena", "Hera", "Ares", "Kronos"]
+      },
+      image:{
+        type:"faker",
+        key:"internet.avatar"
+      }
+    }
+  },
+  scalars: {},
+};
+module.exports = config
+```
 
 ## Development & Examples
 
 1. Clone this repository
 2. Install dependencies
 3. Run npm run run-example
 
-You should have your server running on port 4000 with sample schema. Feel free to modify schema locally to just test it with your schema.
+You should have your server running on port 4000 with sample schema. Feel free to modify schema locally to just test it with your schema.
+
+## Roadmap
+[ ] - reload on config change
+[ ] - add ai possibilities with OpenAI Key

examples/olympus/.graphql.demeter.js

@@ -0,0 +1,21 @@
+/** @type {import('graphql-demeter-core').FakerConfig} */
+const config = {
+  objects: {
+    Card:{
+      description:{
+        type:"values",
+        values:["Very powerful card", "Most fire resistant character", "Good melee fighter"]
+      },
+      name:{
+        type:"values",
+        values:["Zeus", "Athena", "Hera", "Ares", "Kronos"]
+      },
+      image:{
+        type:"faker",
+        key:"internet.avatar"
+      }
+    }
+  },
+  scalars: {},
+};
+module.exports = config

examples/olympus/example.query.gql

@@ -0,0 +1,8 @@
+query Draw{
+  drawCard{
+    name
+    description
+    Attack
+    Defense
+  }
+}

examples/olympus/package.json

@@ -5,7 +5,7 @@
   "private": true,
   "main": "index.js",
   "scripts": {
-    "start": "demeter zeus.graphql"
+    "start": "node ../../node_modules/.bin/demeter zeus.graphql"
   },
   "author": "Aexol <[email protected]> (http://aexol.com)",
   "license": "ISC",

examples/olympus/tsconfig.json

@@ -0,0 +1,21 @@
+{
+    "compilerOptions": {
+      "target": "es5",
+      "lib": ["dom", "dom.iterable", "esnext"],
+      "allowJs": true,
+      "skipLibCheck": true,
+      "strict": false,
+      "forceConsistentCasingInFileNames": true,
+      "noEmit": true,
+      "incremental": true,
+      "esModuleInterop": true,
+      "module": "esnext",
+      "moduleResolution": "node",
+      "resolveJsonModule": true,
+      "isolatedModules": true,
+      "jsx": "preserve",
+    },
+    "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx", ".graphql.demeter.js"],
+    "exclude": ["node_modules"]
+  }
+

package.json

@@ -14,10 +14,12 @@
     "url": "https://github.com/graphql-editor/graphql-demeter.git"
   },
   "scripts": {
-    "build": "tspc",
+    "clean-packages":"rimraf packages/**/lib && rimraf packages/**/tsconfig.tsbuildinfo",
+    "build": "npm run clean-packages && npm run build --ws --if-present",
     "lint": "tspc && eslint \"./packages/**/src/**/*.{ts,js}\" --quiet --fix",
     "cli": "node ./packages/graphql-demeter/lib/index.js",
-    "run-example":"npm run build && npm run start -w olympus",
+    "example": "npm run start -w olympus",
+    "run-example": "npm run build && npm run example",
     "test": "jest"
   },
   "devDependencies": {
@@ -32,6 +34,7 @@
     "husky": "^8.0.3",
     "jest": "^29.7.0",
     "prettier": "^3.1.1",
+    "rimraf": "^5.0.5",
     "ts-jest": "^29.1.1",
     "ts-node": "^10.9.2",
     "ts-patch": "^3.1.1",

packages/graphql-demeter-core/.eslintrc

@@ -1,3 +1,4 @@
 {
-  "extends": ["../../.eslintrc"]
+  "extends": ["../../.eslintrc"],
+  "ignorePatterns":["lib"]
 }

packages/graphql-demeter-core/package.json

@@ -5,8 +5,8 @@
   "main": "./lib/index.js",
   "author": "GraphQL Editor, Artur Czemiel",
   "scripts": {
-    "build": "tspc --build tsconfig.build.json",
-    "start": "tspc --build tsconfig.build.json --watch"
+    "build": "tspc",
+    "start": "tspc --watch"
   },
   "repository": {
     "type": "git",

packages/graphql-demeter-core/src/MockServer/models.ts

@@ -1,7 +1,51 @@
-export type FakerConfiguratedField = {
-  type: string;
-  values?: Array<string | number>;
-};
+import type { faker } from '@faker-js/faker';
+
+type FakerType = typeof faker;
+type FakerFunctionKey =
+  | 'address'
+  | 'commerce'
+  | 'company'
+  | 'database'
+  | 'date'
+  | 'finance'
+  | 'hacker'
+  | 'helpers'
+  | 'internet'
+  | 'lorem'
+  | 'name'
+  | 'phone'
+  | 'random'
+  | 'system';
+
+type Join<Key, Previous, TKey extends number | string = string> = Key extends TKey
+  ? Previous extends TKey
+    ? `${Key}${'.'}${Previous}`
+    : never
+  : never;
+
+type Previous = [never, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, ...0[]];
+
+export type Paths<TEntity, TDepth extends number = 3, TKey extends number | string = string> = [TDepth] extends [never]
+  ? never
+  : TEntity extends object
+    ? {
+        [Key in keyof TEntity]-?: Key extends TKey
+          ? `${Key}` | Join<Key, Paths<TEntity[Key], Previous[TDepth]>>
+          : never;
+      }[keyof TEntity]
+    : '';
+
+type AllowedFakerStrings = Exclude<Paths<Pick<FakerType, FakerFunctionKey>>, FakerFunctionKey>;
+
+export type FakerConfiguratedField =
+  | {
+      type: 'values';
+      values: Array<string | number>;
+    }
+  | {
+      type: 'faker';
+      key: AllowedFakerStrings;
+    };
 
 export type FakerConfig = {
   objects: Record<string, Record<string, FakerConfiguratedField>> | undefined;

packages/graphql-demeter-core/src/index.ts

@@ -47,7 +47,7 @@ export const createFakeResolvers = (schemaString: string, fakerConfig?: FakerCon
                 a.name,
                 () => {
                   const resolverValues = fakerConfig?.objects?.[n.name]?.[a.name];
-                  if (resolverValues?.values && resolverValues.values.length) {
+                  if (resolverValues?.type === 'values' && resolverValues.values && resolverValues.values.length) {
                     return mockValue(a.type.fieldType, () => {
                       if (!resolverValues.values?.length) throw new Error('Invalid values length 0');
                       const chosenValue = Math.floor(Math.random() * resolverValues.values.length);
@@ -59,7 +59,8 @@ export const createFakeResolvers = (schemaString: string, fakerConfig?: FakerCon
                   }
                   if ([ScalarTypes.ID, ScalarTypes.String].includes(tName as ScalarTypes)) {
                     return mockValue(a.type.fieldType, () => {
-                      const valueFromFaker = fakeValue(a.name);
+                      const valueFromFaker =
+                        resolverValues?.type === 'faker' ? fakeValue(resolverValues.key) : fakeValue(a.name);
                       if (typeof valueFromFaker !== 'string') {
                         return fakeScalar(tName)();
                       }

packages/graphql-demeter-core/tsconfig.json

@@ -14,7 +14,7 @@
     "strict": true,
     "outDir": "./lib",
     "lib": ["ESNext", "DOM", "DOM.Iterable"],
-    "rootDir": "./",
+    "rootDir": "./src",
     "baseUrl": "./src",
     "composite": true,
     "paths": {

packages/graphql-demeter/.eslintrc

@@ -1,3 +1,4 @@
 {
-  "extends": ["../../.eslintrc"]
+  "extends": ["../../.eslintrc"],
+  "ignorePatterns":["lib"]
 }

packages/graphql-demeter/package.json

@@ -3,8 +3,8 @@
   "version": "1.0.0",
   "private": false,
   "scripts": {
-    "start": "tspc --build tsconfig.build.json --watch",
-    "build": "tspc --build tsconfig.build.json"
+    "start": "tspc --watch",
+    "build": "tspc"
   },
   "author": "GraphQL Editor, Artur Czemiel",
   "license": "MIT",

packages/graphql-demeter/src/CLIClass.ts

@@ -1,11 +1,14 @@
 import { runMockServer } from '@/server.js';
+import { FakerConfig } from 'graphql-demeter-core';
+import { join } from 'node:path';
 import * as fs from 'fs';
 /**
  * basic yargs interface
  */
 interface Yargs {
   [x: string]: unknown;
   url: string | undefined;
+  config: string | undefined;
   _: (string | number)[];
   $0: string;
 }
@@ -18,6 +21,22 @@ type CliArgs = Yargs;
  * Main class for controlling CLI
  */
 export class CLI {
+  static getConfig = async (configPath: string): Promise<FakerConfig> => {
+    const fullConfigPath = join(process.cwd(), configPath);
+    const configExists = fs.existsSync(fullConfigPath);
+    if (!configExists) {
+      fs.writeFileSync(
+        fullConfigPath,
+        `const config = {
+  objects: {},
+  scalars: {},
+};
+module.exports = config`,
+      );
+    }
+
+    return import(fullConfigPath).then((d) => d.default);
+  };
   /**
    *  Execute yargs provided args
    */
@@ -31,6 +50,10 @@ export class CLI {
       throw new Error('First argument should be path to the schema file');
     }
     const schemaFileContent = fs.readFileSync(schemaFile, 'utf-8');
-    runMockServer(schemaFileContent);
+    const configPath = args.config || CONFIG;
+    const configFile = await CLI.getConfig(configPath);
+    runMockServer(schemaFileContent, configFile);
   };
 }
+
+const CONFIG = '.graphql.demeter.js';

packages/graphql-demeter/src/index.ts

@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+
 import yargs from 'yargs';
 import { hideBin } from 'yargs/helpers';
 import { CLI } from '@/CLIClass.js';
@@ -17,5 +18,10 @@ demeter [path] [output_path] [options]
     describe: 'Get schema in-memory from url',
     type: 'string',
   })
+  .option('config', {
+    alias: 'c',
+    describe: 'GraphQL Demeter config path',
+    type: 'string',
+  })
   .demandCommand(1).argv;
 CLI.execute(args);

packages/graphql-demeter/tsconfig.json

@@ -14,7 +14,7 @@
     "strict": true,
     "outDir": "./lib",
     "lib": ["ESNext", "DOM", "DOM.Iterable"],
-    "rootDir": "./",
+    "rootDir": "./src",
     "baseUrl": "./src",
     "typeRoots": ["../../node_modules/@types"],
     "paths": {

tsconfig.json

@@ -6,6 +6,9 @@
     },
     {
       "path": "./packages/graphql-demeter"
+    },
+    {
+      "path": "./examples/olympus"
     }
   ]
 }