All files / src/utils promises.ts

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/* eslint-disable @typescript-eslint/no-explicit-any */
export class PromiseGroup {
    private promises: { [key: string]: Promise<any> } = {};
    private unnamedPromises: Promise<any>[] = [];
 
    // TODO: This has become too hacky. Refactor it.
    public static UNNAMED_KEY = "__unnamed__";
 
    public add(promise: Promise<any>): void {
        this.unnamedPromises.push(promise);
    }
 
    public set(key: string, promise: Promise<any>): void {
        Iif (key in this.promises || key === PromiseGroup.UNNAMED_KEY) {
            throw new Error(`key: ${key} already in use`);
        }
 
        this.promises[key] = promise;
    }
 
    public async groupAll(): Promise<{[key: string]: any}> {
        const namedPromises = Object.entries(this.promises);
        const allPromises = [...this.unnamedPromises, ...namedPromises.map(np => np[1])];
 
        const resolvedPromises = await Promise.all(allPromises);
 
        const res = {};
        for (let i = 0; i < namedPromises.length; i++) {
            res[namedPromises[i][0]] = resolvedPromises[this.unnamedPromises.length + i];
        }
 
        res[PromiseGroup.UNNAMED_KEY] = resolvedPromises.slice(0, this.unnamedPromises.length);
        return res;
    }
}