Method compileRule

lib/rules/RuleSetCompiler.js:243–288

* Returns normalized and compiled rule for processing. * @param {string} path current path * @param {RuleSetRule} rule the raw rule provided by user * @param {References} refs references * @returns {CompiledRule} normalized and compiled rule for processing

(path, rule, refs)

	 * @returns {CompiledRule} normalized and compiled rule for processing
	 */
	compileRule(path, rule, refs) {
		/** @type {UnhandledProperties} */
		const unhandledProperties = new Set(
			Object.keys(rule).filter(
				(key) => rule[/** @type {keyof RuleSetRule} */ (key)] !== undefined
			)
		);

		/** @type {CompiledRule} */
		const compiledRule = {
			conditions: [],
			effects: [],
			rules: undefined,
			oneOf: undefined
		};

		this.hooks.rule.call(path, rule, unhandledProperties, compiledRule, refs);

		if (unhandledProperties.has("rules")) {
			unhandledProperties.delete("rules");
			const rules = rule.rules;
			if (!Array.isArray(rules)) {
				throw this.error(path, rules, "Rule.rules must be an array of rules");
			}
			compiledRule.rules = this.compileRules(`${path}.rules`, rules, refs);
		}

		if (unhandledProperties.has("oneOf")) {
			unhandledProperties.delete("oneOf");
			const oneOf = rule.oneOf;
			if (!Array.isArray(oneOf)) {
				throw this.error(path, oneOf, "Rule.oneOf must be an array of rules");
			}
			compiledRule.oneOf = this.compileRules(`${path}.oneOf`, oneOf, refs);
		}

		if (unhandledProperties.size > 0) {
			throw this.error(
				path,
				rule,
				`Properties ${[...unhandledProperties].join(", ")} are unknown`
			);
		}

		return compiledRule;
	}

	/**
	 * Returns compiled condition.