docs(examples): add demo with multiple validation libs

README.md

@@ -28,6 +28,7 @@ Think of it as a modern version of [convict](https://github.com/mozilla/node-con
 - Multiple sources of configuration
 - Type-safe configuration
 - Composable configuration
+- No runtime dependencies
 
 ## Usage
 

demo/figue-mix.ts

@@ -0,0 +1,65 @@
+import { StandardSchemaV1 } from '@standard-schema/spec';
+import { defineConfig } from 'figue';
+import { z } from 'zod';
+import * as v from 'valibot';
+
+const passwordSchema: StandardSchemaV1<unknown, string> = {
+  ['~standard']: {
+    version: 1,
+    vendor: 'custom',
+    validate: (value) => {
+      if (typeof value !== 'string') {
+        return { issues: [{ message: 'Password must be a string' }] };
+      }
+
+      return { value };
+    },
+  },
+};
+
+const { config } = defineConfig(
+  {
+    env: {
+      doc: 'Application current environment',
+      default: 'development',
+      schema: v.picklist(['development', 'production', 'test']),
+      env: 'NODE_ENV',
+    },
+    port: {
+      doc: 'Application port to listen',
+      schema: z.coerce.number(),
+      default: 3000,
+      env: 'PORT',
+    },
+    db: {
+      host: {
+        doc: 'Database server url',
+        schema: z.url(),
+        default: 'http://localhost:5432',
+        env: 'APP_DB_HOST',
+      },
+      username: {
+        doc: 'Database server username',
+        schema: v.string(),
+        default: 'pg',
+        env: 'APP_DB_USERNAME',
+      },
+      password: {
+        doc: 'Database server password',
+        schema: passwordSchema,
+        default: '',
+        env: 'APP_DB_PASSWORD',
+      },
+    },
+  },
+  {
+    envSource: process.env,
+  },
+);
+
+console.log(config);
+// {
+//   env: 'development',
+//   port: 3000,
+//   db: { host: 'http://localhost:5432', username: 'pg', password: '' }
+// }