@directus/api/dist/services/assets/name-deduper.js

Directus is a real-time API and App dashboard for managing SQL database content

import sanitize from 'sanitize-filename';
const DEFAULT_GROUP = Symbol('undefined');
export class NameDeduper {
    map = {};
    add(name, options) {
        name = sanitize(name ?? '') || options?.fallback;
        if (!name) {
            throw Error('Invalid "name" provided');
        }
        const groupKey = options?.group ?? DEFAULT_GROUP;
        const match = this.map[groupKey]?.[name];
        if (match) {
            const dedupedName = `${name} (${match})`;
            this.map[groupKey][name] += 1;
            return dedupedName;
        }
        if (!this.map[groupKey]) {
            this.map[groupKey] = {};
        }
        this.map[groupKey][name] = 1;
        return name;
    }
}