Embed the ansi-regex code into the project to fix an import dependenc…

…y issue

lib/index.js

@@ -20,7 +20,7 @@ const get = require('lodash.get');
 const each = require('lodash.foreach');
 const fromPairs = require('lodash.frompairs');
 const toPairs = require('lodash.topairs');
-const stripAnsi = require('strip-ansi');
+const stripAnsi = require('./utils/stripAnsi');
 
 function getAssetPath(compilation, name) {
   return path.join(compilation.getPath(compilation.compiler.outputPath), name.split('?')[0]);

lib/utils/stripAnsi.js

@@ -0,0 +1,27 @@
+/*
+ * This code is based on the strip-ansi library by Chalk.
+ * Source: https://github.com/chalk/strip-ansi
+ */
+
+function ansiRegex({ onlyFirst = false } = {}) {
+  const pattern = [
+    '[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]+)*|[a-zA-Z\\d]+(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*)?\\u0007)',
+    '(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-nq-uy=><~]))',
+  ].join('|');
+
+  return new RegExp(pattern, onlyFirst ? undefined : 'g');
+}
+
+function stripAnsi(string) {
+  if (typeof string !== 'string') {
+    throw new TypeError(`Expected a \`string\`, got \`${typeof string}\``);
+  }
+
+  // Even though the regex is global, we don't need to reset the `.lastIndex`
+  // because unlike `.exec()` and `.test()`, `.replace()` does it automatically
+  // and doing it manually has a performance penalty.
+  const regex = ansiRegex();
+  return string.replace(regex, '');
+}
+
+module.exports = stripAnsi;

package.json

@@ -43,8 +43,7 @@
     "lodash.foreach": "^4.5.0",
     "lodash.frompairs": "^4.0.1",
     "lodash.get": "^4.4.2",
-    "lodash.topairs": "^4.3.0",
-    "strip-ansi": "^6.0.1"
+    "lodash.topairs": "^4.3.0"
   },
   "devDependencies": {
     "@types/babel__traverse": "7.0.6",