first

node_modules/core-js/internals/regexp-exec.js

@@ -0,0 +1,117 @@
+'use strict';
+/* eslint-disable regexp/no-empty-capturing-group, regexp/no-empty-group, regexp/no-lazy-ends -- testing */
+/* eslint-disable regexp/no-useless-quantifier -- testing */
+var call = require('../internals/function-call');
+var uncurryThis = require('../internals/function-uncurry-this');
+var toString = require('../internals/to-string');
+var regexpFlags = require('../internals/regexp-flags');
+var stickyHelpers = require('../internals/regexp-sticky-helpers');
+var shared = require('../internals/shared');
+var create = require('../internals/object-create');
+var getInternalState = require('../internals/internal-state').get;
+var UNSUPPORTED_DOT_ALL = require('../internals/regexp-unsupported-dot-all');
+var UNSUPPORTED_NCG = require('../internals/regexp-unsupported-ncg');
+
+var nativeReplace = shared('native-string-replace', String.prototype.replace);
+var nativeExec = RegExp.prototype.exec;
+var patchedExec = nativeExec;
+var charAt = uncurryThis(''.charAt);
+var indexOf = uncurryThis(''.indexOf);
+var replace = uncurryThis(''.replace);
+var stringSlice = uncurryThis(''.slice);
+
+var UPDATES_LAST_INDEX_WRONG = (function () {
+  var re1 = /a/;
+  var re2 = /b*/g;
+  call(nativeExec, re1, 'a');
+  call(nativeExec, re2, 'a');
+  return re1.lastIndex !== 0 || re2.lastIndex !== 0;
+})();
+
+var UNSUPPORTED_Y = stickyHelpers.BROKEN_CARET;
+
+// nonparticipating capturing group, copied from es5-shim's String#split patch.
+var NPCG_INCLUDED = /()??/.exec('')[1] !== undefined;
+
+var PATCH = UPDATES_LAST_INDEX_WRONG || NPCG_INCLUDED || UNSUPPORTED_Y || UNSUPPORTED_DOT_ALL || UNSUPPORTED_NCG;
+
+if (PATCH) {
+  patchedExec = function exec(string) {
+    var re = this;
+    var state = getInternalState(re);
+    var str = toString(string);
+    var raw = state.raw;
+    var result, reCopy, lastIndex, match, i, object, group;
+
+    if (raw) {
+      raw.lastIndex = re.lastIndex;
+      result = call(patchedExec, raw, str);
+      re.lastIndex = raw.lastIndex;
+      return result;
+    }
+
+    var groups = state.groups;
+    var sticky = UNSUPPORTED_Y && re.sticky;
+    var flags = call(regexpFlags, re);
+    var source = re.source;
+    var charsAdded = 0;
+    var strCopy = str;
+
+    if (sticky) {
+      flags = replace(flags, 'y', '');
+      if (indexOf(flags, 'g') === -1) {
+        flags += 'g';
+      }
+
+      strCopy = stringSlice(str, re.lastIndex);
+      // Support anchored sticky behavior.
+      if (re.lastIndex > 0 && (!re.multiline || re.multiline && charAt(str, re.lastIndex - 1) !== '\n')) {
+        source = '(?: ' + source + ')';
+        strCopy = ' ' + strCopy;
+        charsAdded++;
+      }
+      // ^(? + rx + ) is needed, in combination with some str slicing, to
+      // simulate the 'y' flag.
+      reCopy = new RegExp('^(?:' + source + ')', flags);
+    }
+
+    if (NPCG_INCLUDED) {
+      reCopy = new RegExp('^' + source + '$(?!\\s)', flags);
+    }
+    if (UPDATES_LAST_INDEX_WRONG) lastIndex = re.lastIndex;
+
+    match = call(nativeExec, sticky ? reCopy : re, strCopy);
+
+    if (sticky) {
+      if (match) {
+        match.input = stringSlice(match.input, charsAdded);
+        match[0] = stringSlice(match[0], charsAdded);
+        match.index = re.lastIndex;
+        re.lastIndex += match[0].length;
+      } else re.lastIndex = 0;
+    } else if (UPDATES_LAST_INDEX_WRONG && match) {
+      re.lastIndex = re.global ? match.index + match[0].length : lastIndex;
+    }
+    if (NPCG_INCLUDED && match && match.length > 1) {
+      // Fix browsers whose `exec` methods don't consistently return `undefined`
+      // for NPCG, like IE8. NOTE: This doesn't work for /(.?)?/
+      call(nativeReplace, match[0], reCopy, function () {
+        for (i = 1; i < arguments.length - 2; i++) {
+          if (arguments[i] === undefined) match[i] = undefined;
+        }
+      });
+    }
+
+    if (match && groups) {
+      match.groups = object = create(null);
+      for (i = 0; i < groups.length; i++) {
+        group = groups[i];
+        object[group[0]] = match[group[1]];
+      }
+    }
+
+    return match;
+  };
+}
+
+module.exports = patchedExec;