feat: support multiple contexts

packages/cli/src/config/config.ts

@@ -0,0 +1,44 @@
+import envPaths from 'env-paths';
+import { existsSync, readFileSync, writeFileSync } from 'fs';
+import { mkdir } from 'fs/promises';
+import { join, dirname } from 'path';
+
+type ConfigValues = {
+  context?: string;
+};
+
+class Config {
+  #location: string;
+  #config?: ConfigValues;
+
+  constructor() {
+    const paths = envPaths('mini-loader');
+    this.#location = join(paths.config, 'config.json');
+    if (existsSync(this.#location)) {
+      this.#config = JSON.parse(readFileSync(this.#location, 'utf-8'));
+    }
+  }
+
+  public get context() {
+    return this.#config?.context || 'default';
+  }
+
+  public setContext = (context: string) => {
+    this.#config = {
+      ...(this.#config || {}),
+      context,
+    };
+    this.save();
+  };
+
+  public save = async () => {
+    if (!this.#config) {
+      return;
+    }
+    const json = JSON.stringify(this.#config);
+    mkdir(dirname(this.#location), { recursive: true });
+    writeFileSync(this.#location, json);
+  };
+}
+
+export { Config };