(function (global, factory) { typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) : typeof define === 'function' && define.amd ? define(['exports'], factory) : (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.GOVUKFrontend = {})); })(this, (function (exports) { 'use strict'; function getBreakpoint(name) { const property = `--govuk-frontend-breakpoint-${name}`; const value = window.getComputedStyle(document.documentElement).getPropertyValue(property); return { property, value: value || undefined }; } function isInitialised($root, moduleName) { return $root instanceof HTMLElement && $root.hasAttribute(`data-${moduleName}-init`); } /** * Checks if GOV.UK Frontend is supported on this page * * Some browsers will load and run our JavaScript but GOV.UK Frontend * won't be supported. * * @param {HTMLElement | null} [$scope] - (internal) `` HTML element checked for browser support * @returns {boolean} Whether GOV.UK Frontend is supported on this page */ function isSupported($scope = document.body) { if (!$scope) { return false; } return $scope.classList.contains('govuk-frontend-supported'); } function formatErrorMessage(Component, message) { return `${Component.moduleName}: ${message}`; } /** * Schema for component config * * @typedef {object} Schema * @property {{ [field: string]: SchemaProperty | undefined }} properties - Schema properties * @property {SchemaCondition[]} [anyOf] - List of schema conditions */ /** * Schema property for component config * * @typedef {object} SchemaProperty * @property {'string' | 'boolean' | 'number' | 'object'} type - Property type */ /** * Schema condition for component config * * @typedef {object} SchemaCondition * @property {string[]} required - List of required config fields * @property {string} errorMessage - Error message when required config fields not provided */ /** * @typedef ComponentWithModuleName * @property {string} moduleName - Name of the component */ class GOVUKFrontendError extends Error { constructor(...args) { super(...args); this.name = 'GOVUKFrontendError'; } } class SupportError extends GOVUKFrontendError { /** * Checks if GOV.UK Frontend is supported on this page * * @param {HTMLElement | null} [$scope] - HTML element `` checked for browser support */ constructor($scope = document.body) { const supportMessage = 'noModule' in HTMLScriptElement.prototype ? 'GOV.UK Frontend initialised without `` from template `