@splitsoftware/splitio-commons/esm/evaluator/matchers/prerequisites.js

Split JavaScript SDK common components

import { thenable } from '../../utils/promise/thenable';
export function prerequisitesMatcherContext(prerequisites, storage, log) {
    if (prerequisites === void 0) { prerequisites = []; }
    return function prerequisitesMatcher(_a, splitEvaluator) {
        var key = _a.key, attributes = _a.attributes;
        function evaluatePrerequisite(prerequisite) {
            var evaluation = splitEvaluator(log, key, prerequisite.n, attributes, storage);
            return thenable(evaluation) ?
                evaluation.then(function (evaluation) { return prerequisite.ts.indexOf(evaluation.treatment) !== -1; }) :
                prerequisite.ts.indexOf(evaluation.treatment) !== -1;
        }
        return prerequisites.reduce(function (prerequisitesMet, prerequisite) {
            return thenable(prerequisitesMet) ?
                prerequisitesMet.then(function (prerequisitesMet) { return prerequisitesMet ? evaluatePrerequisite(prerequisite) : false; }) :
                prerequisitesMet ? evaluatePrerequisite(prerequisite) : false;
        }, true);
    };
}