migrate gatsby-plugin-vercel to @vercel/gatsby-plugin-vercel-analytics

packages/gatsby-plugin-vercel-analytics/gatsby-browser.js

@@ -0,0 +1,34 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+exports.__esModule = true;
+exports.onClientEntry = void 0;
+
+var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
+
+var _webVitals = require("./web-vitals");
+
+var onClientEntry = function onClientEntry(_, pluginOptions) {
+  if (pluginOptions === void 0) {
+    pluginOptions = {};
+  }
+
+  var options = (0, _extends2.default)({
+    debug: false
+  }, pluginOptions, {
+    analyticsId: process.env.GATSBY_VERCEL_ANALYTICS_ID
+  });
+
+  if (!options.analyticsId) {
+    return null;
+  }
+
+  if (options.debug || process.env.NODE_ENV === "production") {
+    (0, _webVitals.webVitals)({
+      options: options
+    });
+  }
+};
+
+exports.onClientEntry = onClientEntry;