omit parens when possible

benchmarks/complex.js

@@ -122,13 +122,13 @@ suite
 					picocolors.yellow(`${++index}`)
 			)
 	})
-	.on("cycle", (event) => {
+	.on("cycle", event => {
 		let prefix = event.target.name === "picocolors" ? "+ " : "  "
 		let name = event.target.name.padEnd("kleur/colors  ".length)
 		let hz = formatNumber(event.target.hz.toFixed(0)).padStart(10)
 		process.stdout.write(`${prefix}${name}${picocolors.bold(hz)} ops/sec\n`)
 	})
-	.on("error", (event) => {
+	.on("error", event => {
 		process.stderr.write(picocolors.red(event.target.error.toString()) + "\n")
 		process.exit(1)
 	})

benchmarks/loading.js

@@ -11,7 +11,7 @@ for (let i = 0; i < RUNS; i++) {
 	output
 		.trim()
 		.split("\n")
-		.forEach((line) => {
+		.forEach(line => {
 			let [name, result] = line.split(" ")
 			results[name] = (results[name] || 0) + parseFloat(result)
 		})

benchmarks/simple.js

@@ -57,13 +57,13 @@ suite
 	.add("picocolors", () => {
 		out = picocolors.red("Add plugin to use time limit")
 	})
-	.on("cycle", (event) => {
+	.on("cycle", event => {
 		let prefix = event.target.name === "picocolors" ? "+ " : "  "
 		let name = event.target.name.padEnd("kleur/colors  ".length)
 		let hz = formatNumber(event.target.hz.toFixed(0)).padStart(10)
 		process.stdout.write(`${prefix}${name}${picocolors.bold(hz)} ops/sec\n`)
 	})
-	.on("error", (event) => {
+	.on("error", event => {
 		process.stderr.write(picocolors.red(event.target.error.toString()) + "\n")
 		process.exit(1)
 	})

benchmarks/size.js

@@ -5,10 +5,10 @@ let { get } = require("https")
 let { bold, gray } = require("../picocolors.js")
 
 async function getJSON(url) {
-	return new Promise((resolve) => {
-		get(url, (res) => {
+	return new Promise(resolve => {
+		get(url, res => {
 			let text = ""
-			res.on("data", (chunk) => {
+			res.on("data", chunk => {
 				text += chunk
 			})
 			res.on("end", () => {

package.json

@@ -40,7 +40,8 @@
     "printWidth": 100,
     "useTabs": true,
     "tabWidth": 2,
-    "semi": false
+    "semi": false,
+    "arrowParens": "avoid"
   },
   "clean-publish": {
     "cleanDocs": true

picocolors.js

@@ -10,7 +10,7 @@ let isColorSupported =
 
 let formatter =
 	(open, close, replace = open) =>
-	(input) => {
+	input => {
 		let string = "" + input
 		let index = string.indexOf(close, open.length)
 		return ~index
@@ -27,7 +27,7 @@ let replaceClose = (string, close, replace, index) => {
 
 let createColors = (enabled = isColorSupported) => ({
 	isColorSupported: enabled,
-	reset: enabled ? (s) => `\x1b[0m${s}\x1b[0m` : String,
+	reset: enabled ? s => `\x1b[0m${s}\x1b[0m` : String,
 	bold: enabled ? formatter("\x1b[1m", "\x1b[22m", "\x1b[22m\x1b[1m") : String,
 	dim: enabled ? formatter("\x1b[2m", "\x1b[22m", "\x1b[22m\x1b[2m") : String,
 	italic: enabled ? formatter("\x1b[3m", "\x1b[23m") : String,