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node_modules/core-js/internals/get-substitution.js

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+'use strict';
+var uncurryThis = require('../internals/function-uncurry-this');
+var toObject = require('../internals/to-object');
+
+var floor = Math.floor;
+var charAt = uncurryThis(''.charAt);
+var replace = uncurryThis(''.replace);
+var stringSlice = uncurryThis(''.slice);
+// eslint-disable-next-line redos/no-vulnerable -- safe
+var SUBSTITUTION_SYMBOLS = /\$([$&'`]|\d{1,2}|<[^>]*>)/g;
+var SUBSTITUTION_SYMBOLS_NO_NAMED = /\$([$&'`]|\d{1,2})/g;
+
+// `GetSubstitution` abstract operation
+// https://tc39.es/ecma262/#sec-getsubstitution
+module.exports = function (matched, str, position, captures, namedCaptures, replacement) {
+  var tailPos = position + matched.length;
+  var m = captures.length;
+  var symbols = SUBSTITUTION_SYMBOLS_NO_NAMED;
+  if (namedCaptures !== undefined) {
+    namedCaptures = toObject(namedCaptures);
+    symbols = SUBSTITUTION_SYMBOLS;
+  }
+  return replace(replacement, symbols, function (match, ch) {
+    var capture;
+    switch (charAt(ch, 0)) {
+      case '$': return '$';
+      case '&': return matched;
+      case '`': return stringSlice(str, 0, position);
+      case "'": return stringSlice(str, tailPos);
+      case '<':
+        capture = namedCaptures[stringSlice(ch, 1, -1)];
+        break;
+      default: // \d\d?
+        var n = +ch;
+        if (n === 0) return match;
+        if (n > m) {
+          var f = floor(n / 10);
+          if (f === 0) return match;
+          if (f <= m) return captures[f - 1] === undefined ? charAt(ch, 1) : captures[f - 1] + charAt(ch, 1);
+          return match;
+        }
+        capture = captures[n - 1];
+    }
+    return capture === undefined ? '' : capture;
+  });
+};