Merge remote-tracking branch 'upstream/main'

frontend/node_modules/pbkdf2/lib/precondition.js

@@ -0,0 +1,27 @@
+'use strict';
+
+var $isFinite = isFinite;
+var MAX_ALLOC = Math.pow(2, 30) - 1; // default in iojs
+
+module.exports = function (iterations, keylen) {
+	if (typeof iterations !== 'number') {
+		throw new TypeError('Iterations not a number');
+	}
+
+	if (iterations < 0 || !$isFinite(iterations)) {
+		throw new TypeError('Bad iterations');
+	}
+
+	if (typeof keylen !== 'number') {
+		throw new TypeError('Key length not a number');
+	}
+
+	if (keylen < 0 || keylen > MAX_ALLOC || keylen !== keylen) { /* eslint no-self-compare: 0 */
+		throw new TypeError('Bad key length');
+	}
+
+	// `-0` passes the `keylen < 0` guard above (since `-0 < 0` is `false`), but
+	// the native binding requires a true Int32; `-0` is held as a double and
+	// aborts the process (SIGABRT) on Node.js 15+. Coerce it to `+0`.
+	return keylen + 0;
+};