Initial commit

node_modules/stylelint/lib/utils/matchesStringOrRegExp.js

@@ -0,0 +1,53 @@
+/* @flow */
+"use strict"
+
+/**
+ * Compares a string to a second value that, if it fits a certain convention,
+ * is converted to a regular expression before the comparison.
+ * If it doesn't fit the convention, then two strings are compared.
+ *
+ * Any strings starting and ending with `/` are interpreted
+ * as regular expressions.
+ */
+module.exports = function matchesStringOrRegExp(
+  input/*: string | Array<string>*/,
+  comparison/*: string | Array<string>*/
+)/*: false | { match: string, pattern: string}*/ {
+  if (!Array.isArray(input)) {
+    return testAgainstStringOrArray(input, comparison)
+  }
+
+  for (const inputItem of input) {
+    const testResult = testAgainstStringOrArray(inputItem, comparison)
+    if (testResult) {
+      return testResult
+    }
+  }
+
+  return false
+}
+
+function testAgainstStringOrArray(value, comparison) {
+  if (!Array.isArray(comparison)) {
+    return testAgainstString(value, comparison)
+  }
+
+  for (const comparisonItem of comparison) {
+    const testResult = testAgainstString(value, comparisonItem)
+    if (testResult) {
+      return testResult
+    }
+  }
+  return false
+}
+
+function testAgainstString(value, comparison) {
+  const comparisonIsRegex = comparison[0] === "/" && comparison[comparison.length - 1] === "/"
+
+  if (comparisonIsRegex) {
+    const valueMatches = new RegExp(comparison.slice(1, -1)).test(value)
+    return valueMatches ? { match: value, pattern: comparison } : false
+  }
+
+  return value === comparison ? { match: value, pattern: comparison } : false
+}