/* IMPORT */
import Utils from './utils.js';
/* MAIN */
//TODO: Maybe publish this as a standalone module
class LazyMapSet {
    constructor() {
        /* VARIABLES */
        this.map = new Map();
    }
    /* API */
    clear() {
        this.map.clear();
    }
    delete(key, value) {
        if (Utils.lang.isUndefined(value)) {
            return this.map.delete(key);
        }
        else if (this.map.has(key)) {
            const values = this.map.get(key);
            if (Utils.lang.isSet(values)) {
                const deleted = values.delete(value);
                if (!values.size) {
                    this.map.delete(key);
                }
                return deleted;
            }
            else if (values === value) {
                this.map.delete(key);
                return true;
            }
        }
        return false;
    }
    find(key, iterator) {
        if (this.map.has(key)) {
            const values = this.map.get(key);
            if (Utils.lang.isSet(values)) {
                return Array.from(values).find(iterator);
            }
            else if (iterator(values)) { //TSC
                return values;
            }
        }
        return undefined;
    }
    get(key) {
        return this.map.get(key);
    }
    has(key, value) {
        if (Utils.lang.isUndefined(value)) {
            return this.map.has(key);
        }
        else if (this.map.has(key)) {
            const values = this.map.get(key);
            if (Utils.lang.isSet(values)) {
                return values.has(value);
            }
            else {
                return (values === value);
            }
        }
        return false;
    }
    set(key, value) {
        if (this.map.has(key)) {
            const values = this.map.get(key);
            if (Utils.lang.isSet(values)) {
                values.add(value);
            }
            else if (values !== value) {
                this.map.set(key, new Set([values, value])); //TSC
            }
        }
        else {
            this.map.set(key, value);
        }
        return this;
    }
}
/* EXPORT */
export default LazyMapSet;
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