@ivandt/json-rules/dist/services/json-rules.js

Rule parsing engine for JSON rules

"use strict";
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _a, _JsonRules_jsonRules, _JsonRules_validator, _JsonRules_evaluator;
Object.defineProperty(exports, "__esModule", { value: true });
exports.JsonRules = void 0;
const builder_1 = require("../builder");
const errors_1 = require("../errors");
const evaluator_1 = require("./evaluator");
const validator_1 = require("./validator");
class JsonRules {
    constructor() {
        _JsonRules_validator.set(this, new validator_1.Validator());
        _JsonRules_evaluator.set(this, new evaluator_1.Evaluator());
    }
    /**
     * Returns a rule builder class instance.
     * Allows for the construction of rules using a fluent interface.
     */
    builder() {
        return new builder_1.Builder(__classPrivateFieldGet(this, _JsonRules_validator, "f"));
    }
    /**
     * Evaluates a rule against a set of criteria and returns the result.
     * If the criteria is an array (indicating multiple criteria to test),
     * the rule will be evaluated against each item in the array and
     * an array of results will be returned.
     *
     * @param rule The rule to evaluate.
     * @param criteria The criteria to evaluate the rule against.
     * @param trustRule Set true to avoid validating the rule before evaluating it (faster).
     * @throws RuleError if the rule is invalid.
     */
    evaluate(rule, criteria, trustRule = false) {
        // Before we evaluate the rule, we should validate it.
        // If `trustRuleset` is set to true, we will skip validation.
        const validationResult = !trustRule && this.validate(rule);
        if (!trustRule && !validationResult.isValid) {
            throw new errors_1.RuleError(validationResult);
        }
        return __classPrivateFieldGet(this, _JsonRules_evaluator, "f").evaluate(rule, criteria);
    }
    /**
     * Takes in a rule as a parameter and returns a ValidationResult
     * indicating whether the rule is valid or not.
     *
     * Invalid rules will contain an error property which contains a message and the element
     * that caused the validation to fail.
     *
     * @param rule The rule to validate.
     */
    validate(rule) {
        return __classPrivateFieldGet(this, _JsonRules_validator, "f").validate(rule);
    }
    /**
     * Returns a rule builder class instance.
     * Allows for the construction of rules using a fluent interface.
     */
    static builder() {
        return __classPrivateFieldGet(this, _a, "f", _JsonRules_jsonRules).builder();
    }
    /**
     * Evaluates a rule against a set of criteria and returns the result.
     * If the criteria is an array (indicating multiple criteria to test),
     * the rule will be evaluated against each item in the array and
     * an array of results will be returned.
     *
     * @param rule The rule to evaluate.
     * @param criteria The criteria to evaluate the rule against.
     * @param trustRule Set true to avoid validating the rule before evaluating it (faster).
     * @throws RuleError if the rule is invalid.
     */
    static evaluate(rule, criteria, trustRule = false) {
        return __classPrivateFieldGet(_a, _a, "f", _JsonRules_jsonRules).evaluate(rule, criteria, trustRule);
    }
    /**
     * Takes in a rule as a parameter and returns a ValidationResult
     * indicating whether the rule is valid or not.
     *
     * Invalid rules will contain an error property which contains a message and the element
     * that caused the validation to fail.
     *
     * @param rule The rule to validate.
     */
    static validate(rule) {
        return __classPrivateFieldGet(_a, _a, "f", _JsonRules_jsonRules).validate(rule);
    }
}
exports.JsonRules = JsonRules;
_a = JsonRules, _JsonRules_validator = new WeakMap(), _JsonRules_evaluator = new WeakMap();
_JsonRules_jsonRules = { value: new _a() };