Fix: Use ansi-style directly instead of chalk.styles (#108)

Author: koba04

lib/create-header.js

@@ -10,7 +10,7 @@
 // Requirements
 //------------------------------------------------------------------------------
 
-const chalk = require("chalk")
+const ansiStyles = require("ansi-styles")
 
 //------------------------------------------------------------------------------
 // Public Interface
@@ -38,7 +38,7 @@ module.exports = function createHeader(nameAndArgs, packageInfo, isTTY) {
     const packageVersion = packageInfo.body.version
     const scriptBody = packageInfo.body.scripts[name]
     const packagePath = packageInfo.path
-    const color = isTTY ? chalk.styles.gray : { open: "", close: "" }
+    const color = isTTY ? ansiStyles.gray : { open: "", close: "" }
 
     return `
 ${color.open}> ${packageName}@${packageVersion} ${name} ${packagePath}${color.close}

package.json

@@ -29,6 +29,7 @@
     "codecov": "nyc report -r lcovonly && codecov"
   },
   "dependencies": {
+    "ansi-styles": "^3.2.0",
     "chalk": "^2.1.0",
     "cross-spawn": "^5.1.0",
     "memory-streams": "^0.1.2",