fix: make style properties readonly

types/index.d.ts

@@ -44,50 +44,50 @@ export interface Chalk {
 	hex(color: string): this;
 	keyword(color: string): this;
 
-	reset: this;
-	bold: this;
-	dim: this;
-	italic: this;
-	underline: this;
-	inverse: this;
-	hidden: this;
-	strikethrough: this;
+	readonly reset: this;
+	readonly bold: this;
+	readonly dim: this;
+	readonly italic: this;
+	readonly underline: this;
+	readonly inverse: this;
+	readonly hidden: this;
+	readonly strikethrough: this;
 
-	black: this;
-	red: this;
-	green: this;
-	yellow: this;
-	blue: this;
-	magenta: this;
-	cyan: this;
-	white: this;
-	gray: this;
-	grey: this;
-	blackBright: this;
-	redBright: this;
-	greenBright: this;
-	yellowBright: this;
-	blueBright: this;
-	magentaBright: this;
-	cyanBright: this;
-	whiteBright: this;
+	readonly black: this;
+	readonly red: this;
+	readonly green: this;
+	readonly yellow: this;
+	readonly blue: this;
+	readonly magenta: this;
+	readonly cyan: this;
+	readonly white: this;
+	readonly gray: this;
+	readonly grey: this;
+	readonly blackBright: this;
+	readonly redBright: this;
+	readonly greenBright: this;
+	readonly yellowBright: this;
+	readonly blueBright: this;
+	readonly magentaBright: this;
+	readonly cyanBright: this;
+	readonly whiteBright: this;
 
-	bgBlack: this;
-	bgRed: this;
-	bgGreen: this;
-	bgYellow: this;
-	bgBlue: this;
-	bgMagenta: this;
-	bgCyan: this;
-	bgWhite: this;
-	bgBlackBright: this;
-	bgRedBright: this;
-	bgGreenBright: this;
-	bgYellowBright: this;
-	bgBlueBright: this;
-	bgMagentaBright: this;
-	bgCyanBright: this;
-	bgWhiteBright: this;
+	readonly bgBlack: this;
+	readonly bgRed: this;
+	readonly bgGreen: this;
+	readonly bgYellow: this;
+	readonly bgBlue: this;
+	readonly bgMagenta: this;
+	readonly bgCyan: this;
+	readonly bgWhite: this;
+	readonly bgBlackBright: this;
+	readonly bgRedBright: this;
+	readonly bgGreenBright: this;
+	readonly bgYellowBright: this;
+	readonly bgBlueBright: this;
+	readonly bgMagentaBright: this;
+	readonly bgCyanBright: this;
+	readonly bgWhiteBright: this;
 }
 
 declare const chalk: Chalk & { supportsColor: ColorSupport };