@api3/contracts/dist/src/utils/arrays.js

Contracts through which API3 services are delivered

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.hasUniqueEntries = hasUniqueEntries;
function hasUniqueEntries(items, field) {
    const uniqueFields = new Set();
    const duplicates = items.filter((item) => {
        if (!item[field]) {
            throw new Error(`unknown field:${field} on array item`);
        }
        if (uniqueFields.has(item[field])) {
            return true;
        }
        uniqueFields.add(item[field]);
        return false;
    });
    return duplicates.length === 0;
}
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