From 81529a97be1d5fb3577004bf538af43c97b5b164 Mon Sep 17 00:00:00 2001
From: SeiwonPark <63793178+SeiwonPark@users.noreply.github.com>
Date: Sun, 24 Sep 2023 05:25:57 +0900
Subject: [PATCH] fix(suggestion): prefixColors API type to embrace string type
 (#439)

---
 README.md                    |  2 +-
 src/concurrently.ts          | 17 +++++++++++++++--
 src/prefix-color-selector.ts |  5 +++--
 3 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 814e6551..1f92edd9 100644
--- a/README.md
+++ b/README.md
@@ -335,7 +335,7 @@ For more details, visit https://github.com/open-cli-tools/concurrently
   - `prefix`: the prefix type to use when logging processes output.
     Possible values: `index`, `pid`, `time`, `command`, `name`, `none`, or a template (eg `[{time} process: {pid}]`).
     Default: the name of the process, or its index if no name is set.
-  - `prefixColors`: a list of colors as supported by [chalk](https://www.npmjs.com/package/chalk) or `auto` for an automatically picked color.
+  - `prefixColors`: a list of colors or a string as supported by [chalk](https://www.npmjs.com/package/chalk) and additional style `auto` for an automatically picked color.
     If concurrently would run more commands than there are colors, the last color is repeated, unless if the last color value is `auto` which means following colors are automatically picked to vary.
     Prefix colors specified per-command take precedence over this list.
   - `prefixLength`: how many characters to show when prefixing with `command`. Default: `10`
diff --git a/src/concurrently.ts b/src/concurrently.ts
index ad3f8f7d..2c5b9ec8 100644
--- a/src/concurrently.ts
+++ b/src/concurrently.ts
@@ -62,9 +62,22 @@ export type ConcurrentlyOptions = {
     group?: boolean;
 
     /**
-     * Comma-separated list of chalk colors to use on prefixes.
+     * A comma-separated list of chalk colors or a string for available styles listed below to use on prefixes.
+     * If there are more commands than colors, the last color will be repeated.
+     *
+     * Available modifiers:
+     * - `reset`, `bold`, `dim`, `italic`, `underline`, `inverse`, `hidden`, `strikethrough`
+     *
+     * Available colors:
+     * - `black`, `red`, `green`, `yellow`, `blue`, `magenta`, `cyan`, `white`, `gray`,
+     * any hex values for colors (e.g. `#23de43`) or `auto` for an automatically picked color
+     *
+     * Available background colors:
+     * - `bgBlack`, `bgRed`, `bgGreen`, `bgYellow`, `bgBlue`, `bgMagenta`, `bgCyan`, `bgWhite`
+     *
+     * @see {@link https://www.npmjs.com/package/chalk} for more information.
      */
-    prefixColors?: string[];
+    prefixColors?: string | string[];
 
     /**
      * Maximum number of commands to run at once.
diff --git a/src/prefix-color-selector.ts b/src/prefix-color-selector.ts
index 092b5e02..63ae0727 100644
--- a/src/prefix-color-selector.ts
+++ b/src/prefix-color-selector.ts
@@ -58,8 +58,9 @@ function* createColorGenerator(customColors: string[]): Generator<string, string
 export class PrefixColorSelector {
     private colorGenerator: Generator<string, string>;
 
-    constructor(customColors: string[] = []) {
-        this.colorGenerator = createColorGenerator(customColors);
+    constructor(customColors: string | string[] = []) {
+        const normalizedColors = typeof customColors === 'string' ? [customColors] : customColors;
+        this.colorGenerator = createColorGenerator(normalizedColors);
     }
 
     /** A list of colors that are readable in a terminal. */