diff --git a/lib/svgo/coa.js b/lib/svgo/coa.js
index 52d640c4a..c7f2c827e 100644
--- a/lib/svgo/coa.js
+++ b/lib/svgo/coa.js
@@ -12,6 +12,7 @@ const regSVGFile = /\.svg$/i;
 
 /**
  * Synchronously check if path is a directory. Tolerant to errors like ENOENT.
+ *
  * @param {string} path
  */
 function checkIsDir(path) {
@@ -276,6 +277,7 @@ async function action(args, opts, command) {
 
 /**
  * Optimize SVG files in a directory.
+ *
  * @param {Object} config options
  * @param {string} dir input directory
  * @param {string} output output directory
@@ -292,6 +294,7 @@ function optimizeFolder(config, dir, output) {
 
 /**
  * Process given files, take only SVG.
+ *
  * @param {Object} config options
  * @param {string} dir input directory
  * @param {Array} files list of file names in the directory
@@ -318,7 +321,8 @@ function processDirectory(config, dir, files, output) {
 }
 
 /**
- * Get svg files descriptions
+ * Get SVG files descriptions.
+ *
  * @param {Object} config options
  * @param {string} dir input directory
  * @param {Array} files list of file names in the directory
@@ -360,6 +364,7 @@ function getFilesDescriptions(config, dir, files, output) {
 
 /**
  * Read SVG file and pass to processing.
+ *
  * @param {Object} config options
  * @param {string} file
  * @param {string} output
@@ -375,6 +380,7 @@ function optimizeFile(config, file, output) {
 
 /**
  * Optimize SVG data.
+ *
  * @param {Object} config options
  * @param {string} data SVG content to optimize
  * @param {string} output where to write optimized file
@@ -425,6 +431,7 @@ function processSVGData(config, info, data, output, input) {
 
 /**
  * Write result of an optimization.
+ *
  * @param {string} input
  * @param {string} output output file name. '-' for stdout
  * @param {string} data data to write
@@ -444,7 +451,8 @@ function writeOutput(input, output, data) {
 }
 
 /**
- * Write a time taken by optimization.
+ * Write time taken to optimize.
+ *
  * @param {number} time time in milliseconds.
  */
 function printTimeInfo(time) {
@@ -452,26 +460,28 @@ function printTimeInfo(time) {
 }
 
 /**
- * Write optimizing information in human readable format.
+ * Write optimizing stats in a human-readable format.
+ *
  * @param {number} inBytes size before optimization.
  * @param {number} outBytes size after optimization.
  */
 function printProfitInfo(inBytes, outBytes) {
-  var profitPercents = 100 - (outBytes * 100) / inBytes;
+  const profitPercent = 100 - (outBytes * 100) / inBytes;
+  /** @type {[string, Function]} */
+  const ui = profitPercent < 0 ? ['+', colors.red] : ['-', colors.green];
 
   console.log(
-    Math.round((inBytes / 1024) * 1000) / 1000 +
-      ' KiB' +
-      (profitPercents < 0 ? ' + ' : ' - ') +
-      colors.green(Math.abs(Math.round(profitPercents * 10) / 10) + '%') +
-      ' = ' +
-      Math.round((outBytes / 1024) * 1000) / 1000 +
-      ' KiB'
+    Math.round((inBytes / 1024) * 1000) / 1000 + ' KiB',
+    ui[0],
+    ui[1](Math.abs(Math.round(profitPercent * 10) / 10) + '%'),
+    '=',
+    Math.round((outBytes / 1024) * 1000) / 1000 + ' KiB'
   );
 }
 
 /**
  * Check for errors, if it's a dir optimize the dir.
+ *
  * @param {Object} config
  * @param {string} input
  * @param {string} output
@@ -491,6 +501,7 @@ function checkOptimizeFileError(config, input, output, error) {
 
 /**
  * Check for saving file error. If the output is a dir, then write file there.
+ *
  * @param {string} input
  * @param {string} output
  * @param {string} data
@@ -509,9 +520,7 @@ function checkWriteFileError(input, output, data, error) {
   }
 }
 
-/**
- * Show list of available plugins with short description.
- */
+/** Show list of available plugins with short description. */
 function showAvailablePlugins() {
   const list = builtin
     .sort((a, b) => a.name.localeCompare(b.name))