1 files changed, 19 insertions, 17 deletions

diff --git a/node_modules/matcher/index.js b/node_modules/matcher/index.js
index 947d8cf4f..33e4e1532 100644
--- a/node_modules/matcher/index.js
+++ b/node_modules/matcher/index.js
@@ -3,34 +3,33 @@ const escapeStringRegexp = require('escape-string-regexp');
 
 const reCache = new Map();
 
-function makeRe(pattern, shouldNegate) {
-	const cacheKey = pattern + shouldNegate;
+function makeRe(pattern, options) {
+	const opts = Object.assign({
+		caseSensitive: false
+	}, options);
+
+	const cacheKey = pattern + JSON.stringify(opts);
 
 	if (reCache.has(cacheKey)) {
 		return reCache.get(cacheKey);
 	}
 
-	let negated = false;
+	const negated = pattern[0] === '!';
 
-	if (pattern[0] === '!') {
-		negated = true;
+	if (negated) {
 		pattern = pattern.slice(1);
 	}
 
 	pattern = escapeStringRegexp(pattern).replace(/\\\*/g, '.*');
 
-	if (negated && shouldNegate) {
-		pattern = `(?!${pattern})`;
-	}
-
-	const re = new RegExp(`^${pattern}$`, 'i');
+	const re = new RegExp(`^${pattern}$`, opts.caseSensitive ? '' : 'i');
 	re.negated = negated;
 	reCache.set(cacheKey, re);
 
 	return re;
 }
 
-module.exports = (inputs, patterns) => {
+module.exports = (inputs, patterns, options) => {
 	if (!(Array.isArray(inputs) && Array.isArray(patterns))) {
 		throw new TypeError(`Expected two arrays, got ${typeof inputs} ${typeof patterns}`);
 	}
@@ -41,7 +40,7 @@ module.exports = (inputs, patterns) => {
 
 	const firstNegated = patterns[0][0] === '!';
 
-	patterns = patterns.map(x => makeRe(x, false));
+	patterns = patterns.map(x => makeRe(x, options));
 
 	const ret = [];
 
@@ -49,10 +48,9 @@ module.exports = (inputs, patterns) => {
 		// If first pattern is negated we include everything to match user expectation
 		let matches = firstNegated;
 
-		// TODO: Figure out why tests fail when I use a for-of loop here
-		for (let j = 0; j < patterns.length; j++) {
-			if (patterns[j].test(input)) {
-				matches = !patterns[j].negated;
+		for (const pattern of patterns) {
+			if (pattern.test(input)) {
+				matches = !pattern.negated;
 			}
 		}
 
@@ -64,4 +62,8 @@ module.exports = (inputs, patterns) => {
 	return ret;
 };
 
-module.exports.isMatch = (input, pattern) => makeRe(pattern, true).test(input);
+module.exports.isMatch = (input, pattern, options) => {
+	const re = makeRe(pattern, options);
+	const matches = re.test(input);
+	return re.negated ? !matches : matches;
+};