feat: Move runtime config into dedicated component, Closes #67

* Move runtime config into dedicated component, Closes #67

* Migrate FileResourceStore to RuntimeConfig

test/unit/init/RuntimeConfig.test.ts

@@ -0,0 +1,43 @@
+import { RuntimeConfig } from '../../../src/init/RuntimeConfig';
+
+describe('RuntimeConfig', (): void => {
+  it('handles undefined args.', async(): Promise<void> => {
+    const config = new RuntimeConfig();
+    expect(config.port).toEqual(3000);
+    expect(config.base).toEqual('http://localhost:3000/');
+  });
+
+  it('handles empty args.', async(): Promise<void> => {
+    const config = new RuntimeConfig({});
+    expect(config.port).toEqual(3000);
+    expect(config.base).toEqual('http://localhost:3000/');
+  });
+
+  it('handles args with port.', async(): Promise<void> => {
+    const config = new RuntimeConfig({ port: 1234 });
+    expect(config.port).toEqual(1234);
+    expect(config.base).toEqual('http://localhost:1234/');
+  });
+
+  it('handles args with base.', async(): Promise<void> => {
+    const config = new RuntimeConfig({ base: 'http://example.org/' });
+    expect(config.port).toEqual(3000);
+    expect(config.base).toEqual('http://example.org/');
+  });
+
+  it('handles args with port and base.', async(): Promise<void> => {
+    const config = new RuntimeConfig({ port: 1234, base: 'http://example.org/' });
+    expect(config.port).toEqual(1234);
+    expect(config.base).toEqual('http://example.org/');
+  });
+
+  it('handles resetting data.', async(): Promise<void> => {
+    const config = new RuntimeConfig({});
+    expect(config.port).toEqual(3000);
+    expect(config.base).toEqual('http://localhost:3000/');
+
+    config.reset({ port: 1234, base: 'http://example.org/' });
+    expect(config.port).toEqual(1234);
+    expect(config.base).toEqual('http://example.org/');
+  });
+});