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import PropTypes from 'prop-types';
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import withSideEffect from 'react-side-effect';
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import isEqual from 'react-fast-compare';
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import React from 'react';
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import objectAssign from 'object-assign';
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var ATTRIBUTE_NAMES = {
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BODY: "bodyAttributes",
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HTML: "htmlAttributes",
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TITLE: "titleAttributes"
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};
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var TAG_NAMES = {
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BASE: "base",
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BODY: "body",
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HEAD: "head",
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HTML: "html",
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LINK: "link",
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META: "meta",
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NOSCRIPT: "noscript",
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SCRIPT: "script",
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STYLE: "style",
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TITLE: "title"
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};
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var VALID_TAG_NAMES = Object.keys(TAG_NAMES).map(function (name) {
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return TAG_NAMES[name];
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});
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var TAG_PROPERTIES = {
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CHARSET: "charset",
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CSS_TEXT: "cssText",
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HREF: "href",
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HTTPEQUIV: "http-equiv",
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INNER_HTML: "innerHTML",
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ITEM_PROP: "itemprop",
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NAME: "name",
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PROPERTY: "property",
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REL: "rel",
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SRC: "src",
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TARGET: "target"
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};
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var REACT_TAG_MAP = {
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accesskey: "accessKey",
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charset: "charSet",
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class: "className",
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contenteditable: "contentEditable",
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contextmenu: "contextMenu",
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"http-equiv": "httpEquiv",
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itemprop: "itemProp",
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tabindex: "tabIndex"
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};
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var HELMET_PROPS = {
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DEFAULT_TITLE: "defaultTitle",
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DEFER: "defer",
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ENCODE_SPECIAL_CHARACTERS: "encodeSpecialCharacters",
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ON_CHANGE_CLIENT_STATE: "onChangeClientState",
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TITLE_TEMPLATE: "titleTemplate"
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};
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var HTML_TAG_MAP = Object.keys(REACT_TAG_MAP).reduce(function (obj, key) {
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obj[REACT_TAG_MAP[key]] = key;
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return obj;
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}, {});
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var SELF_CLOSING_TAGS = [TAG_NAMES.NOSCRIPT, TAG_NAMES.SCRIPT, TAG_NAMES.STYLE];
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var HELMET_ATTRIBUTE = "data-react-helmet";
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var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
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return typeof obj;
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} : function (obj) {
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return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
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};
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var classCallCheck = function (instance, Constructor) {
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if (!(instance instanceof Constructor)) {
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throw new TypeError("Cannot call a class as a function");
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}
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};
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var createClass = function () {
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function defineProperties(target, props) {
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for (var i = 0; i < props.length; i++) {
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var descriptor = props[i];
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descriptor.enumerable = descriptor.enumerable || false;
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descriptor.configurable = true;
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if ("value" in descriptor) descriptor.writable = true;
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Object.defineProperty(target, descriptor.key, descriptor);
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}
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}
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return function (Constructor, protoProps, staticProps) {
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if (protoProps) defineProperties(Constructor.prototype, protoProps);
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if (staticProps) defineProperties(Constructor, staticProps);
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return Constructor;
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};
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}();
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var _extends = Object.assign || function (target) {
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for (var i = 1; i < arguments.length; i++) {
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var source = arguments[i];
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for (var key in source) {
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if (Object.prototype.hasOwnProperty.call(source, key)) {
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target[key] = source[key];
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}
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}
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}
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return target;
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};
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var inherits = function (subClass, superClass) {
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if (typeof superClass !== "function" && superClass !== null) {
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throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
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}
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subClass.prototype = Object.create(superClass && superClass.prototype, {
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constructor: {
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value: subClass,
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enumerable: false,
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writable: true,
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configurable: true
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}
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});
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if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
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};
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var objectWithoutProperties = function (obj, keys) {
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var target = {};
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for (var i in obj) {
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if (keys.indexOf(i) >= 0) continue;
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if (!Object.prototype.hasOwnProperty.call(obj, i)) continue;
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target[i] = obj[i];
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}
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return target;
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};
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var possibleConstructorReturn = function (self, call) {
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if (!self) {
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throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
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}
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return call && (typeof call === "object" || typeof call === "function") ? call : self;
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};
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var encodeSpecialCharacters = function encodeSpecialCharacters(str) {
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var encode = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : true;
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if (encode === false) {
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return String(str);
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}
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return String(str).replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">").replace(/"/g, """).replace(/'/g, "'");
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};
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var getTitleFromPropsList = function getTitleFromPropsList(propsList) {
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var innermostTitle = getInnermostProperty(propsList, TAG_NAMES.TITLE);
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var innermostTemplate = getInnermostProperty(propsList, HELMET_PROPS.TITLE_TEMPLATE);
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if (innermostTemplate && innermostTitle) {
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// use function arg to avoid need to escape $ characters
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return innermostTemplate.replace(/%s/g, function () {
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return Array.isArray(innermostTitle) ? innermostTitle.join("") : innermostTitle;
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});
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}
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var innermostDefaultTitle = getInnermostProperty(propsList, HELMET_PROPS.DEFAULT_TITLE);
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return innermostTitle || innermostDefaultTitle || undefined;
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};
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var getOnChangeClientState = function getOnChangeClientState(propsList) {
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return getInnermostProperty(propsList, HELMET_PROPS.ON_CHANGE_CLIENT_STATE) || function () {};
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};
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var getAttributesFromPropsList = function getAttributesFromPropsList(tagType, propsList) {
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return propsList.filter(function (props) {
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return typeof props[tagType] !== "undefined";
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}).map(function (props) {
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return props[tagType];
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}).reduce(function (tagAttrs, current) {
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return _extends({}, tagAttrs, current);
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}, {});
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};
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var getBaseTagFromPropsList = function getBaseTagFromPropsList(primaryAttributes, propsList) {
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return propsList.filter(function (props) {
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return typeof props[TAG_NAMES.BASE] !== "undefined";
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}).map(function (props) {
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return props[TAG_NAMES.BASE];
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}).reverse().reduce(function (innermostBaseTag, tag) {
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if (!innermostBaseTag.length) {
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var keys = Object.keys(tag);
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for (var i = 0; i < keys.length; i++) {
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var attributeKey = keys[i];
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var lowerCaseAttributeKey = attributeKey.toLowerCase();
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if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && tag[lowerCaseAttributeKey]) {
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return innermostBaseTag.concat(tag);
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}
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}
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}
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return innermostBaseTag;
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}, []);
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};
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var getTagsFromPropsList = function getTagsFromPropsList(tagName, primaryAttributes, propsList) {
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// Calculate list of tags, giving priority innermost component (end of the propslist)
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var approvedSeenTags = {};
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return propsList.filter(function (props) {
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if (Array.isArray(props[tagName])) {
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return true;
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}
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if (typeof props[tagName] !== "undefined") {
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warn("Helmet: " + tagName + " should be of type \"Array\". Instead found type \"" + _typeof(props[tagName]) + "\"");
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}
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return false;
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}).map(function (props) {
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return props[tagName];
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}).reverse().reduce(function (approvedTags, instanceTags) {
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var instanceSeenTags = {};
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instanceTags.filter(function (tag) {
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var primaryAttributeKey = void 0;
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var keys = Object.keys(tag);
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for (var i = 0; i < keys.length; i++) {
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var attributeKey = keys[i];
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var lowerCaseAttributeKey = attributeKey.toLowerCase();
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// Special rule with link tags, since rel and href are both primary tags, rel takes priority
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if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && !(primaryAttributeKey === TAG_PROPERTIES.REL && tag[primaryAttributeKey].toLowerCase() === "canonical") && !(lowerCaseAttributeKey === TAG_PROPERTIES.REL && tag[lowerCaseAttributeKey].toLowerCase() === "stylesheet")) {
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primaryAttributeKey = lowerCaseAttributeKey;
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}
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// Special case for innerHTML which doesn't work lowercased
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if (primaryAttributes.indexOf(attributeKey) !== -1 && (attributeKey === TAG_PROPERTIES.INNER_HTML || attributeKey === TAG_PROPERTIES.CSS_TEXT || attributeKey === TAG_PROPERTIES.ITEM_PROP)) {
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primaryAttributeKey = attributeKey;
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}
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}
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if (!primaryAttributeKey || !tag[primaryAttributeKey]) {
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return false;
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}
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var value = tag[primaryAttributeKey].toLowerCase();
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if (!approvedSeenTags[primaryAttributeKey]) {
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approvedSeenTags[primaryAttributeKey] = {};
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}
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if (!instanceSeenTags[primaryAttributeKey]) {
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instanceSeenTags[primaryAttributeKey] = {};
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}
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if (!approvedSeenTags[primaryAttributeKey][value]) {
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instanceSeenTags[primaryAttributeKey][value] = true;
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return true;
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}
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return false;
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}).reverse().forEach(function (tag) {
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return approvedTags.push(tag);
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});
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// Update seen tags with tags from this instance
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var keys = Object.keys(instanceSeenTags);
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for (var i = 0; i < keys.length; i++) {
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var attributeKey = keys[i];
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var tagUnion = objectAssign({}, approvedSeenTags[attributeKey], instanceSeenTags[attributeKey]);
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approvedSeenTags[attributeKey] = tagUnion;
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}
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return approvedTags;
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}, []).reverse();
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};
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var getInnermostProperty = function getInnermostProperty(propsList, property) {
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for (var i = propsList.length - 1; i >= 0; i--) {
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var props = propsList[i];
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if (props.hasOwnProperty(property)) {
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return props[property];
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}
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}
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return null;
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};
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var reducePropsToState = function reducePropsToState(propsList) {
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return {
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baseTag: getBaseTagFromPropsList([TAG_PROPERTIES.HREF, TAG_PROPERTIES.TARGET], propsList),
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bodyAttributes: getAttributesFromPropsList(ATTRIBUTE_NAMES.BODY, propsList),
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defer: getInnermostProperty(propsList, HELMET_PROPS.DEFER),
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encode: getInnermostProperty(propsList, HELMET_PROPS.ENCODE_SPECIAL_CHARACTERS),
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htmlAttributes: getAttributesFromPropsList(ATTRIBUTE_NAMES.HTML, propsList),
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linkTags: getTagsFromPropsList(TAG_NAMES.LINK, [TAG_PROPERTIES.REL, TAG_PROPERTIES.HREF], propsList),
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metaTags: getTagsFromPropsList(TAG_NAMES.META, [TAG_PROPERTIES.NAME, TAG_PROPERTIES.CHARSET, TAG_PROPERTIES.HTTPEQUIV, TAG_PROPERTIES.PROPERTY, TAG_PROPERTIES.ITEM_PROP], propsList),
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noscriptTags: getTagsFromPropsList(TAG_NAMES.NOSCRIPT, [TAG_PROPERTIES.INNER_HTML], propsList),
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onChangeClientState: getOnChangeClientState(propsList),
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scriptTags: getTagsFromPropsList(TAG_NAMES.SCRIPT, [TAG_PROPERTIES.SRC, TAG_PROPERTIES.INNER_HTML], propsList),
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styleTags: getTagsFromPropsList(TAG_NAMES.STYLE, [TAG_PROPERTIES.CSS_TEXT], propsList),
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title: getTitleFromPropsList(propsList),
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titleAttributes: getAttributesFromPropsList(ATTRIBUTE_NAMES.TITLE, propsList)
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};
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};
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var rafPolyfill = function () {
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var clock = Date.now();
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return function (callback) {
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var currentTime = Date.now();
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if (currentTime - clock > 16) {
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clock = currentTime;
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callback(currentTime);
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} else {
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setTimeout(function () {
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rafPolyfill(callback);
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}, 0);
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}
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};
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}();
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var cafPolyfill = function cafPolyfill(id) {
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return clearTimeout(id);
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};
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var requestAnimationFrame = typeof window !== "undefined" ? window.requestAnimationFrame && window.requestAnimationFrame.bind(window) || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || rafPolyfill : global.requestAnimationFrame || rafPolyfill;
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var cancelAnimationFrame = typeof window !== "undefined" ? window.cancelAnimationFrame || window.webkitCancelAnimationFrame || window.mozCancelAnimationFrame || cafPolyfill : global.cancelAnimationFrame || cafPolyfill;
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var warn = function warn(msg) {
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return console && typeof console.warn === "function" && console.warn(msg);
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};
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var _helmetCallback = null;
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var handleClientStateChange = function handleClientStateChange(newState) {
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if (_helmetCallback) {
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cancelAnimationFrame(_helmetCallback);
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}
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if (newState.defer) {
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_helmetCallback = requestAnimationFrame(function () {
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commitTagChanges(newState, function () {
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_helmetCallback = null;
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});
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});
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} else {
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commitTagChanges(newState);
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_helmetCallback = null;
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}
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};
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var commitTagChanges = function commitTagChanges(newState, cb) {
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var baseTag = newState.baseTag,
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bodyAttributes = newState.bodyAttributes,
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htmlAttributes = newState.htmlAttributes,
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linkTags = newState.linkTags,
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metaTags = newState.metaTags,
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noscriptTags = newState.noscriptTags,
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onChangeClientState = newState.onChangeClientState,
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scriptTags = newState.scriptTags,
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styleTags = newState.styleTags,
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title = newState.title,
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titleAttributes = newState.titleAttributes;
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updateAttributes(TAG_NAMES.BODY, bodyAttributes);
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updateAttributes(TAG_NAMES.HTML, htmlAttributes);
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updateTitle(title, titleAttributes);
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var tagUpdates = {
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baseTag: updateTags(TAG_NAMES.BASE, baseTag),
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linkTags: updateTags(TAG_NAMES.LINK, linkTags),
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metaTags: updateTags(TAG_NAMES.META, metaTags),
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noscriptTags: updateTags(TAG_NAMES.NOSCRIPT, noscriptTags),
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scriptTags: updateTags(TAG_NAMES.SCRIPT, scriptTags),
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styleTags: updateTags(TAG_NAMES.STYLE, styleTags)
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};
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var addedTags = {};
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var removedTags = {};
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Object.keys(tagUpdates).forEach(function (tagType) {
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var _tagUpdates$tagType = tagUpdates[tagType],
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newTags = _tagUpdates$tagType.newTags,
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oldTags = _tagUpdates$tagType.oldTags;
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if (newTags.length) {
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addedTags[tagType] = newTags;
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}
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if (oldTags.length) {
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removedTags[tagType] = tagUpdates[tagType].oldTags;
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}
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});
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cb && cb();
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onChangeClientState(newState, addedTags, removedTags);
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};
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var flattenArray = function flattenArray(possibleArray) {
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return Array.isArray(possibleArray) ? possibleArray.join("") : possibleArray;
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};
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var updateTitle = function updateTitle(title, attributes) {
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if (typeof title !== "undefined" && document.title !== title) {
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document.title = flattenArray(title);
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}
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updateAttributes(TAG_NAMES.TITLE, attributes);
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};
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var updateAttributes = function updateAttributes(tagName, attributes) {
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var elementTag = document.getElementsByTagName(tagName)[0];
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if (!elementTag) {
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return;
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}
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|
|
|
var helmetAttributeString = elementTag.getAttribute(HELMET_ATTRIBUTE);
|
|
|
var helmetAttributes = helmetAttributeString ? helmetAttributeString.split(",") : [];
|
|
|
var attributesToRemove = [].concat(helmetAttributes);
|
|
|
var attributeKeys = Object.keys(attributes);
|
|
|
|
|
|
for (var i = 0; i < attributeKeys.length; i++) {
|
|
|
var attribute = attributeKeys[i];
|
|
|
var value = attributes[attribute] || "";
|
|
|
|
|
|
if (elementTag.getAttribute(attribute) !== value) {
|
|
|
elementTag.setAttribute(attribute, value);
|
|
|
}
|
|
|
|
|
|
if (helmetAttributes.indexOf(attribute) === -1) {
|
|
|
helmetAttributes.push(attribute);
|
|
|
}
|
|
|
|
|
|
var indexToSave = attributesToRemove.indexOf(attribute);
|
|
|
if (indexToSave !== -1) {
|
|
|
attributesToRemove.splice(indexToSave, 1);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
for (var _i = attributesToRemove.length - 1; _i >= 0; _i--) {
|
|
|
elementTag.removeAttribute(attributesToRemove[_i]);
|
|
|
}
|
|
|
|
|
|
if (helmetAttributes.length === attributesToRemove.length) {
|
|
|
elementTag.removeAttribute(HELMET_ATTRIBUTE);
|
|
|
} else if (elementTag.getAttribute(HELMET_ATTRIBUTE) !== attributeKeys.join(",")) {
|
|
|
elementTag.setAttribute(HELMET_ATTRIBUTE, attributeKeys.join(","));
|
|
|
}
|
|
|
};
|
|
|
|
|
|
var updateTags = function updateTags(type, tags) {
|
|
|
var headElement = document.head || document.querySelector(TAG_NAMES.HEAD);
|
|
|
var tagNodes = headElement.querySelectorAll(type + "[" + HELMET_ATTRIBUTE + "]");
|
|
|
var oldTags = Array.prototype.slice.call(tagNodes);
|
|
|
var newTags = [];
|
|
|
var indexToDelete = void 0;
|
|
|
|
|
|
if (tags && tags.length) {
|
|
|
tags.forEach(function (tag) {
|
|
|
var newElement = document.createElement(type);
|
|
|
|
|
|
for (var attribute in tag) {
|
|
|
if (tag.hasOwnProperty(attribute)) {
|
|
|
if (attribute === TAG_PROPERTIES.INNER_HTML) {
|
|
|
newElement.innerHTML = tag.innerHTML;
|
|
|
} else if (attribute === TAG_PROPERTIES.CSS_TEXT) {
|
|
|
if (newElement.styleSheet) {
|
|
|
newElement.styleSheet.cssText = tag.cssText;
|
|
|
} else {
|
|
|
newElement.appendChild(document.createTextNode(tag.cssText));
|
|
|
}
|
|
|
} else {
|
|
|
var value = typeof tag[attribute] === "undefined" ? "" : tag[attribute];
|
|
|
newElement.setAttribute(attribute, value);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
newElement.setAttribute(HELMET_ATTRIBUTE, "true");
|
|
|
|
|
|
// Remove a duplicate tag from domTagstoRemove, so it isn't cleared.
|
|
|
if (oldTags.some(function (existingTag, index) {
|
|
|
indexToDelete = index;
|
|
|
return newElement.isEqualNode(existingTag);
|
|
|
})) {
|
|
|
oldTags.splice(indexToDelete, 1);
|
|
|
} else {
|
|
|
newTags.push(newElement);
|
|
|
}
|
|
|
});
|
|
|
}
|
|
|
|
|
|
oldTags.forEach(function (tag) {
|
|
|
return tag.parentNode.removeChild(tag);
|
|
|
});
|
|
|
newTags.forEach(function (tag) {
|
|
|
return headElement.appendChild(tag);
|
|
|
});
|
|
|
|
|
|
return {
|
|
|
oldTags: oldTags,
|
|
|
newTags: newTags
|
|
|
};
|
|
|
};
|
|
|
|
|
|
var generateElementAttributesAsString = function generateElementAttributesAsString(attributes) {
|
|
|
return Object.keys(attributes).reduce(function (str, key) {
|
|
|
var attr = typeof attributes[key] !== "undefined" ? key + "=\"" + attributes[key] + "\"" : "" + key;
|
|
|
return str ? str + " " + attr : attr;
|
|
|
}, "");
|
|
|
};
|
|
|
|
|
|
var generateTitleAsString = function generateTitleAsString(type, title, attributes, encode) {
|
|
|
var attributeString = generateElementAttributesAsString(attributes);
|
|
|
var flattenedTitle = flattenArray(title);
|
|
|
return attributeString ? "<" + type + " " + HELMET_ATTRIBUTE + "=\"true\" " + attributeString + ">" + encodeSpecialCharacters(flattenedTitle, encode) + "</" + type + ">" : "<" + type + " " + HELMET_ATTRIBUTE + "=\"true\">" + encodeSpecialCharacters(flattenedTitle, encode) + "</" + type + ">";
|
|
|
};
|
|
|
|
|
|
var generateTagsAsString = function generateTagsAsString(type, tags, encode) {
|
|
|
return tags.reduce(function (str, tag) {
|
|
|
var attributeHtml = Object.keys(tag).filter(function (attribute) {
|
|
|
return !(attribute === TAG_PROPERTIES.INNER_HTML || attribute === TAG_PROPERTIES.CSS_TEXT);
|
|
|
}).reduce(function (string, attribute) {
|
|
|
var attr = typeof tag[attribute] === "undefined" ? attribute : attribute + "=\"" + encodeSpecialCharacters(tag[attribute], encode) + "\"";
|
|
|
return string ? string + " " + attr : attr;
|
|
|
}, "");
|
|
|
|
|
|
var tagContent = tag.innerHTML || tag.cssText || "";
|
|
|
|
|
|
var isSelfClosing = SELF_CLOSING_TAGS.indexOf(type) === -1;
|
|
|
|
|
|
return str + "<" + type + " " + HELMET_ATTRIBUTE + "=\"true\" " + attributeHtml + (isSelfClosing ? "/>" : ">" + tagContent + "</" + type + ">");
|
|
|
}, "");
|
|
|
};
|
|
|
|
|
|
var convertElementAttributestoReactProps = function convertElementAttributestoReactProps(attributes) {
|
|
|
var initProps = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
|
|
|
|
|
|
return Object.keys(attributes).reduce(function (obj, key) {
|
|
|
obj[REACT_TAG_MAP[key] || key] = attributes[key];
|
|
|
return obj;
|
|
|
}, initProps);
|
|
|
};
|
|
|
|
|
|
var convertReactPropstoHtmlAttributes = function convertReactPropstoHtmlAttributes(props) {
|
|
|
var initAttributes = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
|
|
|
|
|
|
return Object.keys(props).reduce(function (obj, key) {
|
|
|
obj[HTML_TAG_MAP[key] || key] = props[key];
|
|
|
return obj;
|
|
|
}, initAttributes);
|
|
|
};
|
|
|
|
|
|
var generateTitleAsReactComponent = function generateTitleAsReactComponent(type, title, attributes) {
|
|
|
var _initProps;
|
|
|
|
|
|
// assigning into an array to define toString function on it
|
|
|
var initProps = (_initProps = {
|
|
|
key: title
|
|
|
}, _initProps[HELMET_ATTRIBUTE] = true, _initProps);
|
|
|
var props = convertElementAttributestoReactProps(attributes, initProps);
|
|
|
|
|
|
return [React.createElement(TAG_NAMES.TITLE, props, title)];
|
|
|
};
|
|
|
|
|
|
var generateTagsAsReactComponent = function generateTagsAsReactComponent(type, tags) {
|
|
|
return tags.map(function (tag, i) {
|
|
|
var _mappedTag;
|
|
|
|
|
|
var mappedTag = (_mappedTag = {
|
|
|
key: i
|
|
|
}, _mappedTag[HELMET_ATTRIBUTE] = true, _mappedTag);
|
|
|
|
|
|
Object.keys(tag).forEach(function (attribute) {
|
|
|
var mappedAttribute = REACT_TAG_MAP[attribute] || attribute;
|
|
|
|
|
|
if (mappedAttribute === TAG_PROPERTIES.INNER_HTML || mappedAttribute === TAG_PROPERTIES.CSS_TEXT) {
|
|
|
var content = tag.innerHTML || tag.cssText;
|
|
|
mappedTag.dangerouslySetInnerHTML = { __html: content };
|
|
|
} else {
|
|
|
mappedTag[mappedAttribute] = tag[attribute];
|
|
|
}
|
|
|
});
|
|
|
|
|
|
return React.createElement(type, mappedTag);
|
|
|
});
|
|
|
};
|
|
|
|
|
|
var getMethodsForTag = function getMethodsForTag(type, tags, encode) {
|
|
|
switch (type) {
|
|
|
case TAG_NAMES.TITLE:
|
|
|
return {
|
|
|
toComponent: function toComponent() {
|
|
|
return generateTitleAsReactComponent(type, tags.title, tags.titleAttributes, encode);
|
|
|
},
|
|
|
toString: function toString() {
|
|
|
return generateTitleAsString(type, tags.title, tags.titleAttributes, encode);
|
|
|
}
|
|
|
};
|
|
|
case ATTRIBUTE_NAMES.BODY:
|
|
|
case ATTRIBUTE_NAMES.HTML:
|
|
|
return {
|
|
|
toComponent: function toComponent() {
|
|
|
return convertElementAttributestoReactProps(tags);
|
|
|
},
|
|
|
toString: function toString() {
|
|
|
return generateElementAttributesAsString(tags);
|
|
|
}
|
|
|
};
|
|
|
default:
|
|
|
return {
|
|
|
toComponent: function toComponent() {
|
|
|
return generateTagsAsReactComponent(type, tags);
|
|
|
},
|
|
|
toString: function toString() {
|
|
|
return generateTagsAsString(type, tags, encode);
|
|
|
}
|
|
|
};
|
|
|
}
|
|
|
};
|
|
|
|
|
|
var mapStateOnServer = function mapStateOnServer(_ref) {
|
|
|
var baseTag = _ref.baseTag,
|
|
|
bodyAttributes = _ref.bodyAttributes,
|
|
|
encode = _ref.encode,
|
|
|
htmlAttributes = _ref.htmlAttributes,
|
|
|
linkTags = _ref.linkTags,
|
|
|
metaTags = _ref.metaTags,
|
|
|
noscriptTags = _ref.noscriptTags,
|
|
|
scriptTags = _ref.scriptTags,
|
|
|
styleTags = _ref.styleTags,
|
|
|
_ref$title = _ref.title,
|
|
|
title = _ref$title === undefined ? "" : _ref$title,
|
|
|
titleAttributes = _ref.titleAttributes;
|
|
|
return {
|
|
|
base: getMethodsForTag(TAG_NAMES.BASE, baseTag, encode),
|
|
|
bodyAttributes: getMethodsForTag(ATTRIBUTE_NAMES.BODY, bodyAttributes, encode),
|
|
|
htmlAttributes: getMethodsForTag(ATTRIBUTE_NAMES.HTML, htmlAttributes, encode),
|
|
|
link: getMethodsForTag(TAG_NAMES.LINK, linkTags, encode),
|
|
|
meta: getMethodsForTag(TAG_NAMES.META, metaTags, encode),
|
|
|
noscript: getMethodsForTag(TAG_NAMES.NOSCRIPT, noscriptTags, encode),
|
|
|
script: getMethodsForTag(TAG_NAMES.SCRIPT, scriptTags, encode),
|
|
|
style: getMethodsForTag(TAG_NAMES.STYLE, styleTags, encode),
|
|
|
title: getMethodsForTag(TAG_NAMES.TITLE, { title: title, titleAttributes: titleAttributes }, encode)
|
|
|
};
|
|
|
};
|
|
|
|
|
|
var Helmet = function Helmet(Component) {
|
|
|
var _class, _temp;
|
|
|
|
|
|
return _temp = _class = function (_React$Component) {
|
|
|
inherits(HelmetWrapper, _React$Component);
|
|
|
|
|
|
function HelmetWrapper() {
|
|
|
classCallCheck(this, HelmetWrapper);
|
|
|
return possibleConstructorReturn(this, _React$Component.apply(this, arguments));
|
|
|
}
|
|
|
|
|
|
HelmetWrapper.prototype.shouldComponentUpdate = function shouldComponentUpdate(nextProps) {
|
|
|
return !isEqual(this.props, nextProps);
|
|
|
};
|
|
|
|
|
|
HelmetWrapper.prototype.mapNestedChildrenToProps = function mapNestedChildrenToProps(child, nestedChildren) {
|
|
|
if (!nestedChildren) {
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
switch (child.type) {
|
|
|
case TAG_NAMES.SCRIPT:
|
|
|
case TAG_NAMES.NOSCRIPT:
|
|
|
return {
|
|
|
innerHTML: nestedChildren
|
|
|
};
|
|
|
|
|
|
case TAG_NAMES.STYLE:
|
|
|
return {
|
|
|
cssText: nestedChildren
|
|
|
};
|
|
|
}
|
|
|
|
|
|
throw new Error("<" + child.type + " /> elements are self-closing and can not contain children. Refer to our API for more information.");
|
|
|
};
|
|
|
|
|
|
HelmetWrapper.prototype.flattenArrayTypeChildren = function flattenArrayTypeChildren(_ref) {
|
|
|
var _babelHelpers$extends;
|
|
|
|
|
|
var child = _ref.child,
|
|
|
arrayTypeChildren = _ref.arrayTypeChildren,
|
|
|
newChildProps = _ref.newChildProps,
|
|
|
nestedChildren = _ref.nestedChildren;
|
|
|
|
|
|
return _extends({}, arrayTypeChildren, (_babelHelpers$extends = {}, _babelHelpers$extends[child.type] = [].concat(arrayTypeChildren[child.type] || [], [_extends({}, newChildProps, this.mapNestedChildrenToProps(child, nestedChildren))]), _babelHelpers$extends));
|
|
|
};
|
|
|
|
|
|
HelmetWrapper.prototype.mapObjectTypeChildren = function mapObjectTypeChildren(_ref2) {
|
|
|
var _babelHelpers$extends2, _babelHelpers$extends3;
|
|
|
|
|
|
var child = _ref2.child,
|
|
|
newProps = _ref2.newProps,
|
|
|
newChildProps = _ref2.newChildProps,
|
|
|
nestedChildren = _ref2.nestedChildren;
|
|
|
|
|
|
switch (child.type) {
|
|
|
case TAG_NAMES.TITLE:
|
|
|
return _extends({}, newProps, (_babelHelpers$extends2 = {}, _babelHelpers$extends2[child.type] = nestedChildren, _babelHelpers$extends2.titleAttributes = _extends({}, newChildProps), _babelHelpers$extends2));
|
|
|
|
|
|
case TAG_NAMES.BODY:
|
|
|
return _extends({}, newProps, {
|
|
|
bodyAttributes: _extends({}, newChildProps)
|
|
|
});
|
|
|
|
|
|
case TAG_NAMES.HTML:
|
|
|
return _extends({}, newProps, {
|
|
|
htmlAttributes: _extends({}, newChildProps)
|
|
|
});
|
|
|
}
|
|
|
|
|
|
return _extends({}, newProps, (_babelHelpers$extends3 = {}, _babelHelpers$extends3[child.type] = _extends({}, newChildProps), _babelHelpers$extends3));
|
|
|
};
|
|
|
|
|
|
HelmetWrapper.prototype.mapArrayTypeChildrenToProps = function mapArrayTypeChildrenToProps(arrayTypeChildren, newProps) {
|
|
|
var newFlattenedProps = _extends({}, newProps);
|
|
|
|
|
|
Object.keys(arrayTypeChildren).forEach(function (arrayChildName) {
|
|
|
var _babelHelpers$extends4;
|
|
|
|
|
|
newFlattenedProps = _extends({}, newFlattenedProps, (_babelHelpers$extends4 = {}, _babelHelpers$extends4[arrayChildName] = arrayTypeChildren[arrayChildName], _babelHelpers$extends4));
|
|
|
});
|
|
|
|
|
|
return newFlattenedProps;
|
|
|
};
|
|
|
|
|
|
HelmetWrapper.prototype.warnOnInvalidChildren = function warnOnInvalidChildren(child, nestedChildren) {
|
|
|
if (process.env.NODE_ENV !== "production") {
|
|
|
if (!VALID_TAG_NAMES.some(function (name) {
|
|
|
return child.type === name;
|
|
|
})) {
|
|
|
if (typeof child.type === "function") {
|
|
|
return warn("You may be attempting to nest <Helmet> components within each other, which is not allowed. Refer to our API for more information.");
|
|
|
}
|
|
|
|
|
|
return warn("Only elements types " + VALID_TAG_NAMES.join(", ") + " are allowed. Helmet does not support rendering <" + child.type + "> elements. Refer to our API for more information.");
|
|
|
}
|
|
|
|
|
|
if (nestedChildren && typeof nestedChildren !== "string" && (!Array.isArray(nestedChildren) || nestedChildren.some(function (nestedChild) {
|
|
|
return typeof nestedChild !== "string";
|
|
|
}))) {
|
|
|
throw new Error("Helmet expects a string as a child of <" + child.type + ">. Did you forget to wrap your children in braces? ( <" + child.type + ">{``}</" + child.type + "> ) Refer to our API for more information.");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return true;
|
|
|
};
|
|
|
|
|
|
HelmetWrapper.prototype.mapChildrenToProps = function mapChildrenToProps(children, newProps) {
|
|
|
var _this2 = this;
|
|
|
|
|
|
var arrayTypeChildren = {};
|
|
|
|
|
|
React.Children.forEach(children, function (child) {
|
|
|
if (!child || !child.props) {
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
var _child$props = child.props,
|
|
|
nestedChildren = _child$props.children,
|
|
|
childProps = objectWithoutProperties(_child$props, ["children"]);
|
|
|
|
|
|
var newChildProps = convertReactPropstoHtmlAttributes(childProps);
|
|
|
|
|
|
_this2.warnOnInvalidChildren(child, nestedChildren);
|
|
|
|
|
|
switch (child.type) {
|
|
|
case TAG_NAMES.LINK:
|
|
|
case TAG_NAMES.META:
|
|
|
case TAG_NAMES.NOSCRIPT:
|
|
|
case TAG_NAMES.SCRIPT:
|
|
|
case TAG_NAMES.STYLE:
|
|
|
arrayTypeChildren = _this2.flattenArrayTypeChildren({
|
|
|
child: child,
|
|
|
arrayTypeChildren: arrayTypeChildren,
|
|
|
newChildProps: newChildProps,
|
|
|
nestedChildren: nestedChildren
|
|
|
});
|
|
|
break;
|
|
|
|
|
|
default:
|
|
|
newProps = _this2.mapObjectTypeChildren({
|
|
|
child: child,
|
|
|
newProps: newProps,
|
|
|
newChildProps: newChildProps,
|
|
|
nestedChildren: nestedChildren
|
|
|
});
|
|
|
break;
|
|
|
}
|
|
|
});
|
|
|
|
|
|
newProps = this.mapArrayTypeChildrenToProps(arrayTypeChildren, newProps);
|
|
|
return newProps;
|
|
|
};
|
|
|
|
|
|
HelmetWrapper.prototype.render = function render() {
|
|
|
var _props = this.props,
|
|
|
children = _props.children,
|
|
|
props = objectWithoutProperties(_props, ["children"]);
|
|
|
|
|
|
var newProps = _extends({}, props);
|
|
|
|
|
|
if (children) {
|
|
|
newProps = this.mapChildrenToProps(children, newProps);
|
|
|
}
|
|
|
|
|
|
return React.createElement(Component, newProps);
|
|
|
};
|
|
|
|
|
|
createClass(HelmetWrapper, null, [{
|
|
|
key: "canUseDOM",
|
|
|
|
|
|
|
|
|
// Component.peek comes from react-side-effect:
|
|
|
// For testing, you may use a static peek() method available on the returned component.
|
|
|
// It lets you get the current state without resetting the mounted instance stack.
|
|
|
// Don’t use it for anything other than testing.
|
|
|
|
|
|
/**
|
|
|
* @param {Object} base: {"target": "_blank", "href": "http://mysite.com/"}
|
|
|
* @param {Object} bodyAttributes: {"className": "root"}
|
|
|
* @param {String} defaultTitle: "Default Title"
|
|
|
* @param {Boolean} defer: true
|
|
|
* @param {Boolean} encodeSpecialCharacters: true
|
|
|
* @param {Object} htmlAttributes: {"lang": "en", "amp": undefined}
|
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* @param {Array} link: [{"rel": "canonical", "href": "http://mysite.com/example"}]
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* @param {Array} meta: [{"name": "description", "content": "Test description"}]
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* @param {Array} noscript: [{"innerHTML": "<img src='http://mysite.com/js/test.js'"}]
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* @param {Function} onChangeClientState: "(newState) => console.log(newState)"
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* @param {Array} script: [{"type": "text/javascript", "src": "http://mysite.com/js/test.js"}]
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* @param {Array} style: [{"type": "text/css", "cssText": "div { display: block; color: blue; }"}]
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* @param {String} title: "Title"
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* @param {Object} titleAttributes: {"itemprop": "name"}
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* @param {String} titleTemplate: "MySite.com - %s"
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*/
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set: function set$$1(canUseDOM) {
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Component.canUseDOM = canUseDOM;
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}
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}]);
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return HelmetWrapper;
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}(React.Component), _class.propTypes = {
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base: PropTypes.object,
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bodyAttributes: PropTypes.object,
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children: PropTypes.oneOfType([PropTypes.arrayOf(PropTypes.node), PropTypes.node]),
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defaultTitle: PropTypes.string,
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defer: PropTypes.bool,
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encodeSpecialCharacters: PropTypes.bool,
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htmlAttributes: PropTypes.object,
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link: PropTypes.arrayOf(PropTypes.object),
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meta: PropTypes.arrayOf(PropTypes.object),
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noscript: PropTypes.arrayOf(PropTypes.object),
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onChangeClientState: PropTypes.func,
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script: PropTypes.arrayOf(PropTypes.object),
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style: PropTypes.arrayOf(PropTypes.object),
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title: PropTypes.string,
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titleAttributes: PropTypes.object,
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titleTemplate: PropTypes.string
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}, _class.defaultProps = {
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defer: true,
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encodeSpecialCharacters: true
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}, _class.peek = Component.peek, _class.rewind = function () {
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var mappedState = Component.rewind();
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if (!mappedState) {
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// provide fallback if mappedState is undefined
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mappedState = mapStateOnServer({
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baseTag: [],
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bodyAttributes: {},
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encodeSpecialCharacters: true,
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htmlAttributes: {},
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linkTags: [],
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metaTags: [],
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noscriptTags: [],
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scriptTags: [],
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styleTags: [],
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title: "",
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titleAttributes: {}
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});
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}
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return mappedState;
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}, _temp;
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};
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var NullComponent = function NullComponent() {
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return null;
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};
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var HelmetSideEffects = withSideEffect(reducePropsToState, handleClientStateChange, mapStateOnServer)(NullComponent);
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var HelmetExport = Helmet(HelmetSideEffects);
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HelmetExport.renderStatic = HelmetExport.rewind;
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export { HelmetExport as Helmet };
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