initial commit

lib/vite-plugin-api-proxy.mjs

@@ -0,0 +1,87 @@
+import { loadEnv } from 'vite';
+
+export default function apiProxy(options = {}) {
+  const { envKey = 'PROXY' } = options;
+
+  let { target } = options;
+
+  return {
+    name: 'vite-plugin-api-proxy',
+    config(config, { mode }) {
+      if (!target) {
+        const env = loadEnv(mode, process.cwd(), '');
+        target = env[envKey];
+      }
+
+      if (target) {
+        console.info(`[api-proxy] Proxy to ${target} enabled.`);
+      } else {
+        console.warn(
+          `[api-proxy] No target found for ${envKey}. Proxy disabled.`,
+        );
+        return;
+      }
+
+      return {
+        server: {
+          proxy: {
+            '^/.*': {
+              target,
+              changeOrigin: true,
+              secure: false,
+              bypass: (request) => {
+                return shouldProxy(request) ? null : request.url;
+              },
+            },
+          },
+        },
+      };
+    },
+  };
+}
+
+function shouldProxy(request) {
+  if (
+    request.headers.upgrade === 'websocket' &&
+    request.headers['sec-websocket-protocol'] === 'vite-hmr'
+  ) {
+    return false;
+  }
+
+  // We assume all non-GET requests are API requests, which need to be proxied
+  if (request.method !== 'GET') return true;
+
+  // Known local paths that match most Ember + Vite apps
+  const knownLocalPaths = [
+    /^\/(\?.*)?$/,
+    /^\/index\.html/,
+    /^\/@vite/,
+    /^\/vite/,
+    /\/@-?embroider/,
+    /^\/app\//,
+    /^\/assets/,
+    /^\/node_modules\//,
+    /^\/vendor\//,
+  ];
+
+  if (knownLocalPaths.some((path) => path.test(request.url))) {
+    return false;
+  }
+
+  const isLocalAsset =
+    /\.(js|ts|hbs|css|less|sass|scss|png|jpg|jpeg|gif|svg|ico|woff|woff2|json|map|webmanifest)$/i.test(
+      request.url,
+    );
+
+  if (isLocalAsset) {
+    return false;
+  }
+
+  const accept = request.headers.accept || '';
+  if (accept.includes('text/html')) {
+    return false;
+  }
+
+  // Everything else is assumed to be an API call
+  return true;
+}