@trifrost/core/esm/utils/Lazy.js

Blazingly fast, runtime-agnostic server framework for modern edge and node environments

export class Lazy {
    #val = null;
    #fn = null;
    constructor(val) {
        if (typeof val === 'function') {
            this.#fn = val;
        }
        else if (val) {
            this.#val = val;
        }
    }
    get resolved() {
        return this.#val;
    }
    resolve(opts) {
        if (this.#val)
            return this.#val;
        if (!this.#fn)
            throw new Error('Lazy@resolve: No initializer provided');
        this.#val = this.#fn(opts);
        return this.#val;
    }
    clear() {
        this.#val = null;
    }
}