Improve performance

package.json

@@ -27,11 +27,11 @@
   "homepage": "https://github.com/LitoMore/chalk-pipe#readme",
   "devDependencies": {
     "@sindresorhus/tsconfig": "^6.0.0",
-    "@types/node": "^22.4.0",
+    "@types/node": "^22.7.4",
     "ava": "^6.1.3",
     "c8": "^10.1.2",
     "del-cli": "^5.1.0",
-    "typescript": "^5.5.4",
+    "typescript": "^5.6.2",
     "xo": "^0.59.3"
   },
   "dependencies": {

source/index.ts

@@ -5,24 +5,10 @@ import chalk, {
 	modifierNames,
 	colorNames,
 } from 'chalk';
-import {type KeywordName, cssKeywords} from './styles.js';
+import {cssKeywordsMap} from './styles.js';
 import {normalizeHexColor} from './utils.js';
 
-const isBuiltInStyle = (style: string) => {
-	return ([...modifierNames, ...colorNames] as string[]).includes(style);
-};
-
-const isBackground = (style: string) => {
-	return style.startsWith('bg');
-};
-
-const isHexColor = (style: string) => {
-	return /^#?[a-f\d]{3,8}$/i.test(style);
-};
-
-const isKeyword = (style: string) => {
-	return style in cssKeywords;
-};
+const builtInStyles = new Set<string>([...modifierNames, ...colorNames]);
 
 const chalkPipe = (stylePipe?: string, customChalk?: ChalkInstance) => {
 	/* c8 ignore start */
@@ -40,28 +26,27 @@ const chalkPipe = (stylePipe?: string, customChalk?: ChalkInstance) => {
 		let isBg = false;
 
 		// Built-in styles
-		if (isBuiltInStyle(style)) {
+		if (builtInStyles.has(style)) {
 			paint = paint[style as ModifierName | ColorName];
 			continue;
 		}
 
 		// Background
-		if (isBackground(style)) {
+		if (style.startsWith('bg')) {
 			style = style.slice(2);
 			style = style.slice(0, 1).toLowerCase() + style.slice(1);
 			isBg = true;
 		}
 
 		// Keyword
-		if (isKeyword(style)) {
-			paint = isBg
-				? paint.bgHex(cssKeywords[style as KeywordName])
-				: paint.hex(cssKeywords[style as KeywordName]);
+		if (cssKeywordsMap.has(style)) {
+			const colorHex = cssKeywordsMap.get(style)!;
+			paint = isBg ? paint.bgHex(colorHex) : paint.hex(colorHex);
 			continue;
 		}
 
 		// Hex
-		if (isHexColor(style)) {
+		if (/^#?[a-f\d]{3,8}$/i.test(style)) {
 			style = normalizeHexColor(style);
 			paint = isBg ? paint.bgHex(style) : paint.hex(style);
 			continue;

source/styles.ts

@@ -147,7 +147,9 @@ export const cssKeywords = {
 	whitesmoke: '#f5f5f5',
 	yellow: '#ffff00',
 	yellowgreen: '#9acd32',
-} as const;
+};
+
+export const cssKeywordsMap = new Map(Object.entries(cssKeywords));
 
 /**
 [CSS keyword](https://www.w3.org/wiki/CSS/Properties/color/keywords) names.

source/test.ts

@@ -1,5 +1,5 @@
 import test from 'ava';
-import {cssKeywords} from './styles.js';
+import {cssKeywordsMap} from './styles.js';
 import {normalizeHexColor} from './utils.js';
 import chalkPipe, {
 	Chalk,
@@ -67,7 +67,7 @@ test('Built-in background colors', (t) => {
 test('Keyword styles', (t) => {
 	const scheme = chalkPipe('hotpink', chalk);
 	const text = scheme('hug');
-	const expected = chalk.hex(cssKeywords.hotpink)('hug');
+	const expected = chalk.hex(cssKeywordsMap.get('hotpink')!)('hug');
 	t.is(text, expected);
 });
 
@@ -76,7 +76,7 @@ test('Background styles', (t) => {
 	const text = scheme('unicorn');
 	const expected = chalk.bgRed
 		.bgHex('#ff99cc')
-		.bgHex(cssKeywords.pink)
+		.bgHex(cssKeywordsMap.get('pink')!)
 		.bgBlackBright('unicorn');
 	t.is(text, expected);
 });