diff --git a/src/lib/logger.ts b/src/lib/logger.ts
index 17ee1bf17..9318484d2 100644
--- a/src/lib/logger.ts
+++ b/src/lib/logger.ts
@@ -1,42 +1,19 @@
 /* eslint-disable */
 
-import { isObject, pad } from './utils';
+import { pad } from './utils';
 
 import { fillInMsgTemplate } from './logger/parser';
+import {calculateLevel, levels, subsystems} from "./logger/levels";
 
 const cluster = require('cluster');
 const Logger = require('bunyan');
 const Error = require('http-errors');
 const Stream = require('stream');
-const { red, yellow, cyan, magenta, green, white, black, blue } = require('kleur');
+const { red, yellow, cyan, magenta, green, white } = require('kleur');
 const pkgJSON = require('../../package.json');
 const _ = require('lodash');
 const dayjs = require('dayjs');
 
-/**
- * Match the level based on buyan severity scale
- * @param {*} x severity level
- * @return {String} security level
- */
-function calculateLevel(x) {
-  switch (true) {
-    case x < 15:
-      return 'trace';
-    case x < 25:
-      return 'debug';
-    case x < 35:
-      return 'info';
-    case x == 35:
-      return 'http';
-    case x < 45:
-      return 'warn';
-    case x < 55:
-      return 'error';
-    default:
-      return 'fatal';
-  }
-}
-
 /**
  * A RotatingFileStream that modifes the message first
  */
@@ -161,17 +138,6 @@ function setup(logs) {
 // this part was converted to coffee-script and back again over the years,
 // so it might look weird
 
-// level to color
-const levels = {
-  fatal: red,
-  error: red,
-  warn: yellow,
-  http: magenta,
-  info: cyan,
-  debug: green,
-  trace: white,
-};
-
 let max = 0;
 for (const l in levels) {
   if (Object.prototype.hasOwnProperty.call(levels, l)) {
@@ -193,20 +159,7 @@ for (const l in levels) {
   }
   const finalMessage = fillInMsgTemplate(msg, obj, colors);
 
-  const subsystems = [
-    {
-      in: green('<--'),
-      out: yellow('-->'),
-      fs: black('-=-'),
-      default: blue('---'),
-    },
-    {
-      in: '<--',
-      out: '-->',
-      fs: '-=-',
-      default: '---',
-    },
-  ];
+
 
   const sub = subsystems[colors ? 0 : 1][obj.sub] || subsystems[+!colors].default;
   if (colors) {
diff --git a/src/lib/logger/levels.ts b/src/lib/logger/levels.ts
new file mode 100644
index 000000000..5517083d5
--- /dev/null
+++ b/src/lib/logger/levels.ts
@@ -0,0 +1,51 @@
+import { yellow, green, black, blue, red, magenta, cyan, white } from 'kleur';
+
+// level to color
+export const levels = {
+    fatal: red,
+    error: red,
+    warn: yellow,
+    http: magenta,
+    info: cyan,
+    debug: green,
+    trace: white,
+};
+
+/**
+ * Match the level based on buyan severity scale
+ * @param {*} x severity level
+ * @return {String} security level
+ */
+export function calculateLevel(x) {
+    switch (true) {
+        case x < 15:
+            return 'trace';
+        case x < 25:
+            return 'debug';
+        case x < 35:
+            return 'info';
+        case x == 35:
+            return 'http';
+        case x < 45:
+            return 'warn';
+        case x < 55:
+            return 'error';
+        default:
+            return 'fatal';
+    }
+}
+
+export const subsystems = [
+    {
+        in: green('<--'),
+        out: yellow('-->'),
+        fs: black('-=-'),
+        default: blue('---'),
+    },
+    {
+        in: '<--',
+        out: '-->',
+        fs: '-=-',
+        default: '---',
+    },
+];
diff --git a/test/unit/modules/logger/parser.spec.ts b/test/unit/modules/logger/parser.spec.ts
index cc0118cce..1b528f43c 100644
--- a/test/unit/modules/logger/parser.spec.ts
+++ b/test/unit/modules/logger/parser.spec.ts
@@ -8,7 +8,13 @@ jest.mock('kleur', () => {
   // we emulate colors with this pattern color[msg]
   return {
     green: r => `g[${r}]`,
-    red: r => `r[${r}]`
+    yellow: r => `y[${r}]`,
+    black: r => `b[${r}]`,
+    blue: r => `bu[${r}]`,
+    red: r => `r[${r}]`,
+    cyan: r => `c[${r}]`,
+    magenta: r => `m[${r}]`,
+    white: r => `w[${r}]`,
   }
 });