Default pretty logs to singleline

Author: spalladino

yarn-project/foundation/src/config/env_var.ts

@@ -56,6 +56,7 @@ export type EnvVar =
   | 'L2_QUEUE_SIZE'
   | 'LOG_ELAPSED_TIME'
   | 'LOG_JSON'
+  | 'LOG_MULTILINE'
   | 'LOG_LEVEL'
   | 'MNEMONIC'
   | 'NETWORK_NAME'

yarn-project/foundation/src/log/pino-logger.ts

@@ -78,7 +78,9 @@ const pinoPrettyOpts = {
   customLevels: 'fatal:60,error:50,warn:40,info:30,verbose:25,debug:20,trace:10',
   customColors: 'fatal:bgRed,error:red,warn:yellow,info:green,verbose:magenta,debug:blue,trace:gray',
   minimumLevel: 'trace' as const,
+  singleLine: !['1', 'true'].includes(process.env.LOG_MULTILINE ?? ''),
 };
+
 const prettyTransport: pino.TransportSingleOptions = {
   target: 'pino-pretty',
   options: pinoPrettyOpts,