@devgrid/common/dist/esm/list-buffer.js

Some useful primitives

export class ListBuffer {
    constructor() {
        this.head = null;
        this.tail = null;
        this.size = 0;
    }
    push(value) {
        const node = { value, next: null };
        if (!this.tail) {
            this.head = this.tail = node;
        }
        else {
            this.tail.next = node;
            this.tail = node;
        }
        this.size++;
    }
    shift() {
        if (!this.head)
            return undefined;
        const value = this.head.value;
        this.head = this.head.next;
        if (!this.head)
            this.tail = null;
        this.size--;
        return value;
    }
    get length() {
        return this.size;
    }
    clear() {
        this.head = this.tail = null;
        this.size = 0;
    }
}
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