Replace chalk with picocolors

Already used in latest postcss, autoprefixer and browserslist versions.

See https://github.com/alexeyraspopov/picocolors

package.json

@@ -67,7 +67,6 @@
   },
   "dependencies": {
     "arg": "^5.0.1",
-    "chalk": "^4.1.2",
     "chokidar": "^3.5.2",
     "color-name": "^1.1.4",
     "cosmiconfig": "^7.0.1",
@@ -79,6 +78,7 @@
     "is-glob": "^4.0.3",
     "normalize-path": "^3.0.0",
     "object-hash": "^2.2.0",
+    "picocolors": "^1.0.0",
     "postcss-js": "^3.0.3",
     "postcss-load-config": "^3.1.0",
     "postcss-nested": "5.0.6",

src/featureFlags.js

@@ -1,4 +1,4 @@
-import chalk from 'chalk'
+import colors from 'picocolors'
 import log from './util/log'
 
 let defaults = {
@@ -41,7 +41,7 @@ export function issueFlagNotices(config) {
 
   if (experimentalFlagsEnabled(config).length > 0) {
     let changes = experimentalFlagsEnabled(config)
-      .map((s) => chalk.yellow(s))
+      .map((s) => colors.yellow(s))
       .join(', ')
 
     log.warn('experimental-flags-enabled', [

src/util/log.js

@@ -1,25 +1,25 @@
-import chalk from 'chalk'
+import colors from 'picocolors'
 
 let alreadyShown = new Set()
 
-function log(chalk, messages, key) {
+function log(type, messages, key) {
   if (process.env.JEST_WORKER_ID !== undefined) return
 
   if (key && alreadyShown.has(key)) return
   if (key) alreadyShown.add(key)
 
   console.warn('')
-  messages.forEach((message) => console.warn(chalk, '-', message))
+  messages.forEach((message) => console.warn(type, '-', message))
 }
 
 export default {
   info(key, messages) {
-    log(chalk.bold.cyan('info'), ...(Array.isArray(key) ? [key] : [messages, key]))
+    log(colors.bold(colors.cyan('info')), ...(Array.isArray(key) ? [key] : [messages, key]))
   },
   warn(key, messages) {
-    log(chalk.bold.yellow('warn'), ...(Array.isArray(key) ? [key] : [messages, key]))
+    log(colors.bold(colors.yellow('warn')), ...(Array.isArray(key) ? [key] : [messages, key]))
   },
   risk(key, messages) {
-    log(chalk.bold.magenta('risk'), ...(Array.isArray(key) ? [key] : [messages, key]))
+    log(colors.bold(colors.magenta('risk')), ...(Array.isArray(key) ? [key] : [messages, key]))
   },
 }