feat: Octokit.plugin

Author: gr2m

src/index.ts

@@ -1 +1,24 @@
-export function Octokit() {}
+import { OctokitOptions, Plugin } from "./types";
+
+export class Octokit {
+  static plugins: Plugin[] = [];
+  static plugin(plugins: Plugin | Plugin[]) {
+    const currentPlugins = this.plugins;
+    const newPlugins = Array.isArray(plugins) ? plugins : [plugins];
+
+    return class NewOctokit extends this {
+      static plugins = currentPlugins.concat(
+        newPlugins.filter(plugin => !currentPlugins.includes(plugin))
+      );
+    };
+  }
+
+  constructor(options?: OctokitOptions) {
+    // https://stackoverflow.com/a/16345172
+    const classConstructor = this.constructor as typeof Octokit;
+    classConstructor.plugins.forEach(plugin => plugin(this, options));
+  }
+
+  // allow for plugins to extend the Octokit instance
+  [key: string]: any;
+}

src/types.ts

@@ -0,0 +1,7 @@
+import { Octokit } from ".";
+
+export type OctokitOptions = {
+  [option: string]: any;
+};
+
+export type Plugin = (octokit: Octokit, options?: OctokitOptions) => void;