upgrade dependencies

1 files changed, 42 insertions, 0 deletions

diff --git a/node_modules/webpack/lib/util/Queue.js b/node_modules/webpack/lib/util/Queue.js
new file mode 100644
index 000000000..ef3ffdc80
--- /dev/null
+++ b/node_modules/webpack/lib/util/Queue.js
@@ -0,0 +1,42 @@
+"use strict";

+

+module.exports = class Queue {

+	constructor(items) {

+		this.first = null;

+		this.last = null;

+		this.length = 0;

+		if(items) {

+			for(const item of items) {

+				this.enqueue(item);

+			}

+		}

+	}

+

+	enqueue(item) {

+		const first = this.first;

+		const node = {

+			item,

+			next: null

+		};

+		if(first === null) {

+			this.last = node;

+		} else {

+			first.next = node;

+		}

+		this.first = node;

+		this.length++;

+	}

+

+	dequeue() {

+		const last = this.last;

+		if(last === null)

+			return undefined;

+		const next = last.next;

+		if(next === null) {

+			this.first = null;

+		}

+		this.last = next;

+		this.length--;

+		return last.item;

+	}

+};