handlebars-helpers-v2/dist/lib/collection.js

Essential Handlebars helpers in TypeScript. A modernized collection of 8 core helper categories with TypeScript support and ESM compatibility.

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
const util = __importStar(require("handlebars-utils"));
const utils = __importStar(require("./utils"));
const helpers = {};
/**
 * Inline, subexpression, or block helper that returns true (or the block)
 * if the given collection is empty, or false (or the inverse block, if
 * supplied) if the colleciton is not empty.
 *
 * ```handlebars
 * <!-- array: [] -->
 * {{#isEmpty array}}AAA{{else}}BBB{{/isEmpty}}
 * <!-- results in: 'AAA' -->
 *
 * <!-- array: [] -->
 * {{isEmpty array}}
 * <!-- results in: true -->
 * ```
 * @param {Object} `collection`
 * @param {Object} `options`
 * @return {String}
 * @block
 * @api public
 */
helpers.isEmpty = function (collection, options) {
    if (!util.isOptions(options)) {
        options = collection;
        return util.fn(true, this, options);
    }
    if (Array.isArray(collection) && !collection.length) {
        return util.fn(true, this, options);
    }
    var keys = Object.keys(collection);
    var isEmpty = typeof collection === 'object' && !keys.length;
    return util.value(isEmpty, this, options);
};
/**
 * Block helper that iterates over an array or object. If
 * an array is given, `.forEach` is called, or if an object
 * is given, `.forOwn` is called, otherwise the inverse block
 * is returned.
 *
 * @param {Object|Array} `collection` The collection to iterate over
 * @param {Object} `options`
 * @return {String}
 * @block
 * @api public
 */
helpers.iterate = function (collection, options) {
    if (Array.isArray(collection)) {
        return utils.forEach.apply(null, arguments);
    }
    if (util.isObject(collection)) {
        return utils.forOwn.apply(null, arguments);
    }
    return options.inverse(this);
};
exports.default = helpers;
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