Log to stdout and file if log file env not null

Author: Matija Petrunic

package.json

@@ -53,6 +53,7 @@
     "pg": "^8.6.0",
     "pg-native": "^3.0.0",
     "pino": "^6.11.3",
+    "pino-multi-stream": "^5.3.0",
     "pino-pretty": "^5.0.1",
     "typeorm": "^0.2.32",
     "typeorm-seeding": "^1.6.1"
@@ -64,6 +65,7 @@
     "@types/node": "^14.14.22",
     "@types/node-cleanup": "^2.1.1",
     "@types/pino": "^6.3.8",
+    "@types/pino-multi-stream": "^5.1.1",
     "@types/pino-pretty": "^4.7.0",
     "@types/sinon": "^9.0.10",
     "@types/supertest": "^2.0.10",

src/services/logger/index.ts

@@ -1,17 +1,21 @@
-import pino from "pino";
+import fs from "fs";
 
-export let logger: pino.Logger;
+import pinoms, { prettyStream } from "pino-multi-stream";
+
+const streams: pinoms.Streams = [
+  {
+    level: (process.env.LOG_LEVEL as pinoms.Level) || "debug",
+    stream: prettyStream({
+      dest: process.stdout,
+    }),
+  },
+];
 
 if (process.env.LOG_FILE) {
-  logger = pino({
-    level: process.env.LOG_LEVEL || "debug",
+  streams.push({
+    level: (process.env.LOG_LEVEL as pinoms.Level) || "debug",
+    stream: fs.createWriteStream(process.env.LOG_FILE),
   });
-} else {
-  logger = pino(
-    {
-      level: process.env.LOG_LEVEL || "debug",
-      prettyPrint: true,
-    },
-    process.stdout
-  );
 }
+
+export const logger = pinoms({ streams });

yarn.lock

@@ -407,6 +407,13 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-15.6.1.tgz#32d43390d5c62c5b6ec486a9bc9c59544de39a08"
   integrity sha512-7EIraBEyRHEe7CH+Fm1XvgqU6uwZN8Q7jppJGcqjROMT29qhAuuOxYB1uEY5UMYQKEmA5D+5tBnhdaPXSsLONA==
 
+"@types/pino-multi-stream@^5.1.1":
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/@types/pino-multi-stream/-/pino-multi-stream-5.1.1.tgz#8d5bc607357324621667c8a5613d4a534c075d0f"
+  integrity sha512-juOdSxwfE5TFKJJlq/VzXxTRyO+9yI9RZoyh/CYnof8MvqM+aUSUP1ZXGTuOZe7qgQnGp8xr8NHU2O/rTrYysA==
+  dependencies:
+    "@types/pino" "*"
+
 "@types/pino-pretty@*", "@types/pino-pretty@^4.7.0":
   version "4.7.0"
   resolved "https://registry.yarnpkg.com/@types/pino-pretty/-/pino-pretty-4.7.0.tgz#e4a18541f8464d1cc48216f5593cc6a0e62dc2c3"
@@ -3745,6 +3752,13 @@ pify@^2.0.0:
   resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
   integrity sha1-7RQaasBDqEnqWISY59yosVMw6Qw=
 
+pino-multi-stream@^5.3.0:
+  version "5.3.0"
+  resolved "https://registry.yarnpkg.com/pino-multi-stream/-/pino-multi-stream-5.3.0.tgz#2816ec4422c7e37e676a210a1705c7155506afd4"
+  integrity sha512-4fAGCRll18I+JmoAbxDvU9zc5sera/3c+VgTtUdoNMOZ/VSHB+HMAYtixKpeRmZTDHDDdE2rtwjVkuwWB8mYQA==
+  dependencies:
+    pino "^6.0.0"
+
 pino-pretty@^5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/pino-pretty/-/pino-pretty-5.0.1.tgz#2cbdf1d743d97df3f0a9dd41cf440274ec770082"
@@ -3769,7 +3783,7 @@ pino-std-serializers@^3.1.0:
   resolved "https://registry.yarnpkg.com/pino-std-serializers/-/pino-std-serializers-3.2.0.tgz#b56487c402d882eb96cd67c257868016b61ad671"
   integrity sha512-EqX4pwDPrt3MuOAAUBMU0Tk5kR/YcCM5fNPEzgCO2zJ5HfX0vbiH9HbJglnyeQsN96Kznae6MWD47pZB5avTrg==
 
-pino@^6.11.3:
+pino@^6.0.0, pino@^6.11.3:
   version "6.11.3"
   resolved "https://registry.yarnpkg.com/pino/-/pino-6.11.3.tgz#0c02eec6029d25e6794fdb6bbea367247d74bc29"
   integrity sha512-drPtqkkSf0ufx2gaea3TryFiBHdNIdXKf5LN0hTM82SXI4xVIve2wLwNg92e1MT6m3jASLu6VO7eGY6+mmGeyw==