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scripts/get-local-api-url.js

@@ -0,0 +1,28 @@
+import os from 'node:os'
+
+/**
+ * Get the private IP addr of the dev machine to use as the API url.
+ * This is preferred to using localhost or 0.0.0.0 because it allows
+ * us to use the dev client from other devices (i.e. phones)
+ * @returns {string}
+ */
+export function getLocalApiUrl() {
+  const addresses = Object.values(os.networkInterfaces())
+    .flat()
+    .filter((addr) => !addr.internal)
+    .filter((addr) => addr.family === 'IPv4')
+    .map((addr) => addr.address)
+
+  let address = addresses.find((addr) => addr.startsWith('192.168')) ?? addresses.at(0)
+
+  if (address === undefined) {
+    console.warn("Couldn't identify the local address for the server. falling back to localhost")
+    address = 'localhost'
+  }
+
+  if (addresses.length > 1) {
+    console.warn(`chose API URL ${address} from possible choices: ${addresses.join(', ')}`)
+  }
+
+  return `http://${address}:7295`
+}