the-forest/client/node_modules/@libsql/hrana-client/lib-esm/queue.js
2024-09-17 20:35:18 -04:00

27 lines
687 B
JavaScript

export class Queue {
#pushStack;
#shiftStack;
constructor() {
this.#pushStack = [];
this.#shiftStack = [];
}
get length() {
return this.#pushStack.length + this.#shiftStack.length;
}
push(elem) {
this.#pushStack.push(elem);
}
shift() {
if (this.#shiftStack.length === 0 && this.#pushStack.length > 0) {
this.#shiftStack = this.#pushStack.reverse();
this.#pushStack = [];
}
return this.#shiftStack.pop();
}
first() {
return this.#shiftStack.length !== 0
? this.#shiftStack[this.#shiftStack.length - 1]
: this.#pushStack[0];
}
}