array-of/index.js

"use strict";

const combinator = require("@validatem/combinator");
const validationResult = require("@validatem/validation-result");
const annotateErrors = require("@validatem/annotate-errors");
const isArray = require("@validatem/is-array");
const withContext = require("@validatem/with-context");

module.exports = function (rules) {
	let validator = combinator((value, applyValidators) => {
		let newArray = [];
		let allErrors = [];

		value.forEach((item, i) => {
			let itemRules = withContext(rules, { arrayIndex: i, arrayLength: value.length });
			let { errors, newValue } = applyValidators(item, itemRules);

			let annotatedErrors = annotateErrors({
				pathSegments: [ i ],
				errors: errors
			});

			newArray.push(newValue);
			allErrors.push(...annotatedErrors);
		});

		return validationResult({
			errors: allErrors,
			newValue: newArray
		});
	});

	validator.callIfNull = false;

	return [
		isArray,
		validator
	];
};