Add experimental verbose logging flag (#49250)

Only shows fetch request logs by default and allows opting into verbose request timings via experimental config. x-ref: [slack thread](https://vercel.slack.com/archives/C03KAR5DCKC/p1683236293282549)
vercel · May 5, 2023 · c881224 · c881224
1 parent fd319d3
commit c881224
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diff --git a/packages/next/src/server/config-schema.ts b/packages/next/src/server/config-schema.ts
@@ -484,6 +484,9 @@ const configSchema = {
             },
           },
         },
+        logging: {
+          type: 'string',
+        },
       },
       type: 'object',
     },

diff --git a/packages/next/src/server/config-shared.ts b/packages/next/src/server/config-shared.ts
@@ -144,6 +144,7 @@ export interface NextJsWebpackConfig {
 }
 
 export interface ExperimentalConfig {
+  logging?: 'verbose'
   appDocumentPreloading?: boolean
   strictNextHead?: boolean
   clientRouterFilter?: boolean

diff --git a/packages/next/src/server/next-server.ts b/packages/next/src/server/next-server.ts
@@ -1789,7 +1789,7 @@ export default class NextNodeServer extends BaseServer {
               )
             }
             process.stdout.write('\n')
-          } else {
+          } else if (this.nextConfig.experimental.logging === 'verbose') {
             process.stdout.write(
               `- ${chalk.cyan(req.method || 'GET')} ${req.url} ${
                 res.statusCode
-Original file line number
+Diff line change
@@ Expand Up / @@ -484,6 +484,9 @@ const configSchema = { @@
                 },
               },
             },
+            logging: {
+              type: 'string',
+            },
           },
           type: 'object',
         },
@@ Expand Down @@