expo-router
Version:
Expo Router is a file-based router for React Native and web applications.
830 lines (817 loc) • 29.6 kB
JavaScript
;
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
// If the importer is in node compatibility mode or this is not an ESM
// file that has been converted to a CommonJS file using a Babel-
// compatible transform (i.e. "__esModule" has not been set), then set
// "default" to the CommonJS "module.exports" for node compatibility.
isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
// src/index.tsx
var src_exports = {};
__export(src_exports, {
Helmet: () => Helmet,
HelmetData: () => HelmetData,
HelmetProvider: () => HelmetProvider
});
module.exports = __toCommonJS(src_exports);
var import_react4 = __toESM(require("react"));
var import_react_fast_compare = __toESM(require("react-fast-compare"));
var import_invariant = __toESM(require("invariant"));
// src/Provider.tsx
var import_react2 = __toESM(require("react"));
// src/server.ts
var import_react = __toESM(require("react"));
// src/constants.ts
var TAG_NAMES = /* @__PURE__ */ ((TAG_NAMES2) => {
TAG_NAMES2["BASE"] = "base";
TAG_NAMES2["BODY"] = "body";
TAG_NAMES2["HEAD"] = "head";
TAG_NAMES2["HTML"] = "html";
TAG_NAMES2["LINK"] = "link";
TAG_NAMES2["META"] = "meta";
TAG_NAMES2["NOSCRIPT"] = "noscript";
TAG_NAMES2["SCRIPT"] = "script";
TAG_NAMES2["STYLE"] = "style";
TAG_NAMES2["TITLE"] = "title";
TAG_NAMES2["FRAGMENT"] = "Symbol(react.fragment)";
return TAG_NAMES2;
})(TAG_NAMES || {});
var SEO_PRIORITY_TAGS = {
link: { rel: ["amphtml", "canonical", "alternate"] },
script: { type: ["application/ld+json"] },
meta: {
charset: "",
name: ["generator", "robots", "description"],
property: [
"og:type",
"og:title",
"og:url",
"og:image",
"og:image:alt",
"og:description",
"twitter:url",
"twitter:title",
"twitter:description",
"twitter:image",
"twitter:image:alt",
"twitter:card",
"twitter:site"
]
}
};
var VALID_TAG_NAMES = Object.values(TAG_NAMES);
var REACT_TAG_MAP = {
accesskey: "accessKey",
charset: "charSet",
class: "className",
contenteditable: "contentEditable",
contextmenu: "contextMenu",
"http-equiv": "httpEquiv",
itemprop: "itemProp",
tabindex: "tabIndex"
};
var HTML_TAG_MAP = Object.entries(REACT_TAG_MAP).reduce(
(carry, [key, value]) => {
carry[value] = key;
return carry;
},
{}
);
var HELMET_ATTRIBUTE = "data-rh";
// src/utils.ts
var HELMET_PROPS = {
DEFAULT_TITLE: "defaultTitle",
DEFER: "defer",
ENCODE_SPECIAL_CHARACTERS: "encodeSpecialCharacters",
ON_CHANGE_CLIENT_STATE: "onChangeClientState",
TITLE_TEMPLATE: "titleTemplate",
PRIORITIZE_SEO_TAGS: "prioritizeSeoTags"
};
var getInnermostProperty = (propsList, property) => {
for (let i = propsList.length - 1; i >= 0; i -= 1) {
const props = propsList[i];
if (Object.prototype.hasOwnProperty.call(props, property)) {
return props[property];
}
}
return null;
};
var getTitleFromPropsList = (propsList) => {
let innermostTitle = getInnermostProperty(propsList, "title" /* TITLE */);
const innermostTemplate = getInnermostProperty(propsList, HELMET_PROPS.TITLE_TEMPLATE);
if (Array.isArray(innermostTitle)) {
innermostTitle = innermostTitle.join("");
}
if (innermostTemplate && innermostTitle) {
return innermostTemplate.replace(/%s/g, () => innermostTitle);
}
const innermostDefaultTitle = getInnermostProperty(propsList, HELMET_PROPS.DEFAULT_TITLE);
return innermostTitle || innermostDefaultTitle || void 0;
};
var getOnChangeClientState = (propsList) => getInnermostProperty(propsList, HELMET_PROPS.ON_CHANGE_CLIENT_STATE) || (() => {
});
var getAttributesFromPropsList = (tagType, propsList) => propsList.filter((props) => typeof props[tagType] !== "undefined").map((props) => props[tagType]).reduce((tagAttrs, current) => ({ ...tagAttrs, ...current }), {});
var getBaseTagFromPropsList = (primaryAttributes, propsList) => propsList.filter((props) => typeof props["base" /* BASE */] !== "undefined").map((props) => props["base" /* BASE */]).reverse().reduce((innermostBaseTag, tag) => {
if (!innermostBaseTag.length) {
const keys = Object.keys(tag);
for (let i = 0; i < keys.length; i += 1) {
const attributeKey = keys[i];
const lowerCaseAttributeKey = attributeKey.toLowerCase();
if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && tag[lowerCaseAttributeKey]) {
return innermostBaseTag.concat(tag);
}
}
}
return innermostBaseTag;
}, []);
var warn = (msg) => console && typeof console.warn === "function" && console.warn(msg);
var getTagsFromPropsList = (tagName, primaryAttributes, propsList) => {
const approvedSeenTags = {};
return propsList.filter((props) => {
if (Array.isArray(props[tagName])) {
return true;
}
if (typeof props[tagName] !== "undefined") {
warn(
`Helmet: ${tagName} should be of type "Array". Instead found type "${typeof props[tagName]}"`
);
}
return false;
}).map((props) => props[tagName]).reverse().reduce((approvedTags, instanceTags) => {
const instanceSeenTags = {};
instanceTags.filter((tag) => {
let primaryAttributeKey;
const keys2 = Object.keys(tag);
for (let i = 0; i < keys2.length; i += 1) {
const attributeKey = keys2[i];
const lowerCaseAttributeKey = attributeKey.toLowerCase();
if (primaryAttributes.indexOf(lowerCaseAttributeKey) !== -1 && !(primaryAttributeKey === "rel" /* REL */ && tag[primaryAttributeKey].toLowerCase() === "canonical") && !(lowerCaseAttributeKey === "rel" /* REL */ && tag[lowerCaseAttributeKey].toLowerCase() === "stylesheet")) {
primaryAttributeKey = lowerCaseAttributeKey;
}
if (primaryAttributes.indexOf(attributeKey) !== -1 && (attributeKey === "innerHTML" /* INNER_HTML */ || attributeKey === "cssText" /* CSS_TEXT */ || attributeKey === "itemprop" /* ITEM_PROP */)) {
primaryAttributeKey = attributeKey;
}
}
if (!primaryAttributeKey || !tag[primaryAttributeKey]) {
return false;
}
const value = tag[primaryAttributeKey].toLowerCase();
if (!approvedSeenTags[primaryAttributeKey]) {
approvedSeenTags[primaryAttributeKey] = {};
}
if (!instanceSeenTags[primaryAttributeKey]) {
instanceSeenTags[primaryAttributeKey] = {};
}
if (!approvedSeenTags[primaryAttributeKey][value]) {
instanceSeenTags[primaryAttributeKey][value] = true;
return true;
}
return false;
}).reverse().forEach((tag) => approvedTags.push(tag));
const keys = Object.keys(instanceSeenTags);
for (let i = 0; i < keys.length; i += 1) {
const attributeKey = keys[i];
const tagUnion = {
...approvedSeenTags[attributeKey],
...instanceSeenTags[attributeKey]
};
approvedSeenTags[attributeKey] = tagUnion;
}
return approvedTags;
}, []).reverse();
};
var getAnyTrueFromPropsList = (propsList, checkedTag) => {
if (Array.isArray(propsList) && propsList.length) {
for (let index = 0; index < propsList.length; index += 1) {
const prop = propsList[index];
if (prop[checkedTag]) {
return true;
}
}
}
return false;
};
var reducePropsToState = (propsList) => ({
baseTag: getBaseTagFromPropsList(["href" /* HREF */], propsList),
bodyAttributes: getAttributesFromPropsList("bodyAttributes" /* BODY */, propsList),
defer: getInnermostProperty(propsList, HELMET_PROPS.DEFER),
encode: getInnermostProperty(propsList, HELMET_PROPS.ENCODE_SPECIAL_CHARACTERS),
htmlAttributes: getAttributesFromPropsList("htmlAttributes" /* HTML */, propsList),
linkTags: getTagsFromPropsList(
"link" /* LINK */,
["rel" /* REL */, "href" /* HREF */],
propsList
),
metaTags: getTagsFromPropsList(
"meta" /* META */,
[
"name" /* NAME */,
"charset" /* CHARSET */,
"http-equiv" /* HTTPEQUIV */,
"property" /* PROPERTY */,
"itemprop" /* ITEM_PROP */
],
propsList
),
noscriptTags: getTagsFromPropsList("noscript" /* NOSCRIPT */, ["innerHTML" /* INNER_HTML */], propsList),
onChangeClientState: getOnChangeClientState(propsList),
scriptTags: getTagsFromPropsList(
"script" /* SCRIPT */,
["src" /* SRC */, "innerHTML" /* INNER_HTML */],
propsList
),
styleTags: getTagsFromPropsList("style" /* STYLE */, ["cssText" /* CSS_TEXT */], propsList),
title: getTitleFromPropsList(propsList),
titleAttributes: getAttributesFromPropsList("titleAttributes" /* TITLE */, propsList),
prioritizeSeoTags: getAnyTrueFromPropsList(propsList, HELMET_PROPS.PRIORITIZE_SEO_TAGS)
});
var flattenArray = (possibleArray) => Array.isArray(possibleArray) ? possibleArray.join("") : possibleArray;
var checkIfPropsMatch = (props, toMatch) => {
const keys = Object.keys(props);
for (let i = 0; i < keys.length; i += 1) {
if (toMatch[keys[i]] && toMatch[keys[i]].includes(props[keys[i]])) {
return true;
}
}
return false;
};
var prioritizer = (elementsList, propsToMatch) => {
if (Array.isArray(elementsList)) {
return elementsList.reduce(
(acc, elementAttrs) => {
if (checkIfPropsMatch(elementAttrs, propsToMatch)) {
acc.priority.push(elementAttrs);
} else {
acc.default.push(elementAttrs);
}
return acc;
},
{ priority: [], default: [] }
);
}
return { default: elementsList, priority: [] };
};
var without = (obj, key) => {
return {
...obj,
[key]: void 0
};
};
// src/server.ts
var SELF_CLOSING_TAGS = ["noscript" /* NOSCRIPT */, "script" /* SCRIPT */, "style" /* STYLE */];
var encodeSpecialCharacters = (str, encode = true) => {
if (encode === false) {
return String(str);
}
return String(str).replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">").replace(/"/g, """).replace(/'/g, "'");
};
var generateElementAttributesAsString = (attributes) => Object.keys(attributes).reduce((str, key) => {
const attr = typeof attributes[key] !== "undefined" ? `${key}="${attributes[key]}"` : `${key}`;
return str ? `${str} ${attr}` : attr;
}, "");
var generateTitleAsString = (type, title, attributes, encode) => {
const attributeString = generateElementAttributesAsString(attributes);
const flattenedTitle = flattenArray(title);
return attributeString ? `<${type} ${HELMET_ATTRIBUTE}="true" ${attributeString}>${encodeSpecialCharacters(
flattenedTitle,
encode
)}</${type}>` : `<${type} ${HELMET_ATTRIBUTE}="true">${encodeSpecialCharacters(
flattenedTitle,
encode
)}</${type}>`;
};
var generateTagsAsString = (type, tags, encode = true) => tags.reduce((str, t) => {
const tag = t;
const attributeHtml = Object.keys(tag).filter(
(attribute) => !(attribute === "innerHTML" /* INNER_HTML */ || attribute === "cssText" /* CSS_TEXT */)
).reduce((string, attribute) => {
const attr = typeof tag[attribute] === "undefined" ? attribute : `${attribute}="${encodeSpecialCharacters(tag[attribute], encode)}"`;
return string ? `${string} ${attr}` : attr;
}, "");
const tagContent = tag.innerHTML || tag.cssText || "";
const isSelfClosing = SELF_CLOSING_TAGS.indexOf(type) === -1;
return `${str}<${type} ${HELMET_ATTRIBUTE}="true" ${attributeHtml}${isSelfClosing ? `/>` : `>${tagContent}</${type}>`}`;
}, "");
var convertElementAttributesToReactProps = (attributes, initProps = {}) => Object.keys(attributes).reduce((obj, key) => {
const mapped = REACT_TAG_MAP[key];
obj[mapped || key] = attributes[key];
return obj;
}, initProps);
var generateTitleAsReactComponent = (_type, title, attributes) => {
const initProps = {
key: title,
[HELMET_ATTRIBUTE]: true
};
const props = convertElementAttributesToReactProps(attributes, initProps);
return [import_react.default.createElement("title" /* TITLE */, props, title)];
};
var generateTagsAsReactComponent = (type, tags) => tags.map((tag, i) => {
const mappedTag = {
key: i,
[HELMET_ATTRIBUTE]: true
};
Object.keys(tag).forEach((attribute) => {
const mapped = REACT_TAG_MAP[attribute];
const mappedAttribute = mapped || attribute;
if (mappedAttribute === "innerHTML" /* INNER_HTML */ || mappedAttribute === "cssText" /* CSS_TEXT */) {
const content = tag.innerHTML || tag.cssText;
mappedTag.dangerouslySetInnerHTML = { __html: content };
} else {
mappedTag[mappedAttribute] = tag[attribute];
}
});
return import_react.default.createElement(type, mappedTag);
});
var getMethodsForTag = (type, tags, encode = true) => {
switch (type) {
case "title" /* TITLE */:
return {
toComponent: () => generateTitleAsReactComponent(type, tags.title, tags.titleAttributes),
toString: () => generateTitleAsString(type, tags.title, tags.titleAttributes, encode)
};
case "bodyAttributes" /* BODY */:
case "htmlAttributes" /* HTML */:
return {
toComponent: () => convertElementAttributesToReactProps(tags),
toString: () => generateElementAttributesAsString(tags)
};
default:
return {
toComponent: () => generateTagsAsReactComponent(type, tags),
toString: () => generateTagsAsString(type, tags, encode)
};
}
};
var getPriorityMethods = ({ metaTags, linkTags, scriptTags, encode }) => {
const meta = prioritizer(metaTags, SEO_PRIORITY_TAGS.meta);
const link = prioritizer(linkTags, SEO_PRIORITY_TAGS.link);
const script = prioritizer(scriptTags, SEO_PRIORITY_TAGS.script);
const priorityMethods = {
toComponent: () => [
...generateTagsAsReactComponent("meta" /* META */, meta.priority),
...generateTagsAsReactComponent("link" /* LINK */, link.priority),
...generateTagsAsReactComponent("script" /* SCRIPT */, script.priority)
],
toString: () => (
// generate all the tags as strings and concatenate them
`${getMethodsForTag("meta" /* META */, meta.priority, encode)} ${getMethodsForTag(
"link" /* LINK */,
link.priority,
encode
)} ${getMethodsForTag("script" /* SCRIPT */, script.priority, encode)}`
)
};
return {
priorityMethods,
metaTags: meta.default,
linkTags: link.default,
scriptTags: script.default
};
};
var mapStateOnServer = (props) => {
const {
baseTag,
bodyAttributes,
encode = true,
htmlAttributes,
noscriptTags,
styleTags,
title = "",
titleAttributes,
prioritizeSeoTags
} = props;
let { linkTags, metaTags, scriptTags } = props;
let priorityMethods = {
toComponent: () => {
},
toString: () => ""
};
if (prioritizeSeoTags) {
({ priorityMethods, linkTags, metaTags, scriptTags } = getPriorityMethods(props));
}
return {
priority: priorityMethods,
base: getMethodsForTag("base" /* BASE */, baseTag, encode),
bodyAttributes: getMethodsForTag("bodyAttributes" /* BODY */, bodyAttributes, encode),
htmlAttributes: getMethodsForTag("htmlAttributes" /* HTML */, htmlAttributes, encode),
link: getMethodsForTag("link" /* LINK */, linkTags, encode),
meta: getMethodsForTag("meta" /* META */, metaTags, encode),
noscript: getMethodsForTag("noscript" /* NOSCRIPT */, noscriptTags, encode),
script: getMethodsForTag("script" /* SCRIPT */, scriptTags, encode),
style: getMethodsForTag("style" /* STYLE */, styleTags, encode),
title: getMethodsForTag("title" /* TITLE */, { title, titleAttributes }, encode)
};
};
var server_default = mapStateOnServer;
// src/HelmetData.ts
var instances = [];
var isDocument = !!(typeof window !== "undefined" && window.document && window.document.createElement);
var HelmetData = class {
instances = [];
canUseDOM = isDocument;
context;
value = {
setHelmet: (serverState) => {
this.context.helmet = serverState;
},
helmetInstances: {
get: () => this.canUseDOM ? instances : this.instances,
add: (instance) => {
(this.canUseDOM ? instances : this.instances).push(instance);
},
remove: (instance) => {
const index = (this.canUseDOM ? instances : this.instances).indexOf(instance);
(this.canUseDOM ? instances : this.instances).splice(index, 1);
}
}
};
constructor(context, canUseDOM) {
this.context = context;
this.canUseDOM = canUseDOM || false;
if (!canUseDOM) {
context.helmet = server_default({
baseTag: [],
bodyAttributes: {},
encodeSpecialCharacters: true,
htmlAttributes: {},
linkTags: [],
metaTags: [],
noscriptTags: [],
scriptTags: [],
styleTags: [],
title: "",
titleAttributes: {}
});
}
}
};
// src/Provider.tsx
var defaultValue = {};
var Context = import_react2.default.createContext(defaultValue);
var HelmetProvider = class _HelmetProvider extends import_react2.Component {
static canUseDOM = isDocument;
helmetData;
constructor(props) {
super(props);
this.helmetData = new HelmetData(this.props.context || {}, _HelmetProvider.canUseDOM);
}
render() {
return /* @__PURE__ */ import_react2.default.createElement(Context.Provider, { value: this.helmetData.value }, this.props.children);
}
};
// src/Dispatcher.tsx
var import_react3 = require("react");
var import_shallowequal = __toESM(require("shallowequal"));
// src/client.ts
var updateTags = (type, tags) => {
const headElement = document.head || document.querySelector("head" /* HEAD */);
const tagNodes = headElement.querySelectorAll(`${type}[${HELMET_ATTRIBUTE}]`);
const oldTags = [].slice.call(tagNodes);
const newTags = [];
let indexToDelete;
if (tags && tags.length) {
tags.forEach((tag) => {
const newElement = document.createElement(type);
for (const attribute in tag) {
if (Object.prototype.hasOwnProperty.call(tag, attribute)) {
if (attribute === "innerHTML" /* INNER_HTML */) {
newElement.innerHTML = tag.innerHTML;
} else if (attribute === "cssText" /* CSS_TEXT */) {
if (newElement.styleSheet) {
newElement.styleSheet.cssText = tag.cssText;
} else {
newElement.appendChild(document.createTextNode(tag.cssText));
}
} else {
const attr = attribute;
const value = typeof tag[attr] === "undefined" ? "" : tag[attr];
newElement.setAttribute(attribute, value);
}
}
}
newElement.setAttribute(HELMET_ATTRIBUTE, "true");
if (oldTags.some((existingTag, index) => {
indexToDelete = index;
return newElement.isEqualNode(existingTag);
})) {
oldTags.splice(indexToDelete, 1);
} else {
newTags.push(newElement);
}
});
}
oldTags.forEach((tag) => tag.parentNode?.removeChild(tag));
newTags.forEach((tag) => headElement.appendChild(tag));
return {
oldTags,
newTags
};
};
var updateAttributes = (tagName, attributes) => {
const elementTag = document.getElementsByTagName(tagName)[0];
if (!elementTag) {
return;
}
const helmetAttributeString = elementTag.getAttribute(HELMET_ATTRIBUTE);
const helmetAttributes = helmetAttributeString ? helmetAttributeString.split(",") : [];
const attributesToRemove = [...helmetAttributes];
const attributeKeys = Object.keys(attributes);
for (const attribute of attributeKeys) {
const value = attributes[attribute] || "";
if (elementTag.getAttribute(attribute) !== value) {
elementTag.setAttribute(attribute, value);
}
if (helmetAttributes.indexOf(attribute) === -1) {
helmetAttributes.push(attribute);
}
const indexToSave = attributesToRemove.indexOf(attribute);
if (indexToSave !== -1) {
attributesToRemove.splice(indexToSave, 1);
}
}
for (let i = attributesToRemove.length - 1; i >= 0; i -= 1) {
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 updateTitle = (title, attributes) => {
if (typeof title !== "undefined" && document.title !== title) {
document.title = flattenArray(title);
}
updateAttributes("title" /* TITLE */, attributes);
};
var commitTagChanges = (newState, cb) => {
const {
baseTag,
bodyAttributes,
htmlAttributes,
linkTags,
metaTags,
noscriptTags,
onChangeClientState,
scriptTags,
styleTags,
title,
titleAttributes
} = newState;
updateAttributes("body" /* BODY */, bodyAttributes);
updateAttributes("html" /* HTML */, htmlAttributes);
updateTitle(title, titleAttributes);
const tagUpdates = {
baseTag: updateTags("base" /* BASE */, baseTag),
linkTags: updateTags("link" /* LINK */, linkTags),
metaTags: updateTags("meta" /* META */, metaTags),
noscriptTags: updateTags("noscript" /* NOSCRIPT */, noscriptTags),
scriptTags: updateTags("script" /* SCRIPT */, scriptTags),
styleTags: updateTags("style" /* STYLE */, styleTags)
};
const addedTags = {};
const removedTags = {};
Object.keys(tagUpdates).forEach((tagType) => {
const { newTags, oldTags } = tagUpdates[tagType];
if (newTags.length) {
addedTags[tagType] = newTags;
}
if (oldTags.length) {
removedTags[tagType] = tagUpdates[tagType].oldTags;
}
});
if (cb) {
cb();
}
onChangeClientState(newState, addedTags, removedTags);
};
var _helmetCallback = null;
var handleStateChangeOnClient = (newState) => {
if (_helmetCallback) {
cancelAnimationFrame(_helmetCallback);
}
if (newState.defer) {
_helmetCallback = requestAnimationFrame(() => {
commitTagChanges(newState, () => {
_helmetCallback = null;
});
});
} else {
commitTagChanges(newState);
_helmetCallback = null;
}
};
var client_default = handleStateChangeOnClient;
// src/Dispatcher.tsx
var HelmetDispatcher = class extends import_react3.Component {
rendered = false;
shouldComponentUpdate(nextProps) {
return !(0, import_shallowequal.default)(nextProps, this.props);
}
componentDidUpdate() {
this.emitChange();
}
componentWillUnmount() {
const { helmetInstances } = this.props.context;
helmetInstances.remove(this);
this.emitChange();
}
emitChange() {
const { helmetInstances, setHelmet } = this.props.context;
let serverState = null;
const state = reducePropsToState(
helmetInstances.get().map((instance) => {
const props = { ...instance.props };
delete props.context;
return props;
})
);
if (HelmetProvider.canUseDOM) {
client_default(state);
} else if (server_default) {
serverState = server_default(state);
}
setHelmet(serverState);
}
// componentWillMount will be deprecated
// for SSR, initialize on first render
// constructor is also unsafe in StrictMode
init() {
if (this.rendered) {
return;
}
this.rendered = true;
const { helmetInstances } = this.props.context;
helmetInstances.add(this);
this.emitChange();
}
render() {
this.init();
return null;
}
};
// src/index.tsx
var Helmet = class extends import_react4.Component {
static defaultProps = {
defer: true,
encodeSpecialCharacters: true,
prioritizeSeoTags: false
};
shouldComponentUpdate(nextProps) {
return !(0, import_react_fast_compare.default)(without(this.props, "helmetData"), without(nextProps, "helmetData"));
}
mapNestedChildrenToProps(child, nestedChildren) {
if (!nestedChildren) {
return null;
}
switch (child.type) {
case "script" /* SCRIPT */:
case "noscript" /* NOSCRIPT */:
return {
innerHTML: nestedChildren
};
case "style" /* STYLE */:
return {
cssText: nestedChildren
};
default:
throw new Error(
`<${child.type} /> elements are self-closing and can not contain children. Refer to our API for more information.`
);
}
}
flattenArrayTypeChildren(child, arrayTypeChildren, newChildProps, nestedChildren) {
return {
...arrayTypeChildren,
[child.type]: [
...arrayTypeChildren[child.type] || [],
{
...newChildProps,
...this.mapNestedChildrenToProps(child, nestedChildren)
}
]
};
}
mapObjectTypeChildren(child, newProps, newChildProps, nestedChildren) {
switch (child.type) {
case "title" /* TITLE */:
return {
...newProps,
[child.type]: nestedChildren,
titleAttributes: { ...newChildProps }
};
case "body" /* BODY */:
return {
...newProps,
bodyAttributes: { ...newChildProps }
};
case "html" /* HTML */:
return {
...newProps,
htmlAttributes: { ...newChildProps }
};
default:
return {
...newProps,
[child.type]: { ...newChildProps }
};
}
}
mapArrayTypeChildrenToProps(arrayTypeChildren, newProps) {
let newFlattenedProps = { ...newProps };
Object.keys(arrayTypeChildren).forEach((arrayChildName) => {
newFlattenedProps = {
...newFlattenedProps,
[arrayChildName]: arrayTypeChildren[arrayChildName]
};
});
return newFlattenedProps;
}
warnOnInvalidChildren(child, nestedChildren) {
(0, import_invariant.default)(
VALID_TAG_NAMES.some((name) => child.type === name),
typeof child.type === "function" ? `You may be attempting to nest <Helmet> components within each other, which is not allowed. Refer to our API for more information.` : `Only elements types ${VALID_TAG_NAMES.join(
", "
)} are allowed. Helmet does not support rendering <${child.type}> elements. Refer to our API for more information.`
);
(0, import_invariant.default)(
!nestedChildren || typeof nestedChildren === "string" || Array.isArray(nestedChildren) && !nestedChildren.some((nestedChild) => typeof nestedChild !== "string"),
`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;
}
mapChildrenToProps(children, newProps) {
let arrayTypeChildren = {};
import_react4.default.Children.forEach(children, (child) => {
if (!child || !child.props) {
return;
}
const { children: nestedChildren, ...childProps } = child.props;
const newChildProps = Object.keys(childProps).reduce((obj, key) => {
obj[HTML_TAG_MAP[key] || key] = childProps[key];
return obj;
}, {});
let { type } = child;
if (typeof type === "symbol") {
type = type.toString();
} else {
this.warnOnInvalidChildren(child, nestedChildren);
}
switch (type) {
case "Symbol(react.fragment)" /* FRAGMENT */:
newProps = this.mapChildrenToProps(nestedChildren, newProps);
break;
case "link" /* LINK */:
case "meta" /* META */:
case "noscript" /* NOSCRIPT */:
case "script" /* SCRIPT */:
case "style" /* STYLE */:
arrayTypeChildren = this.flattenArrayTypeChildren(
child,
arrayTypeChildren,
newChildProps,
nestedChildren
);
break;
default:
newProps = this.mapObjectTypeChildren(child, newProps, newChildProps, nestedChildren);
break;
}
});
return this.mapArrayTypeChildrenToProps(arrayTypeChildren, newProps);
}
render() {
const { children, ...props } = this.props;
let newProps = { ...props };
let { helmetData } = props;
if (children) {
newProps = this.mapChildrenToProps(children, newProps);
}
if (helmetData && !(helmetData instanceof HelmetData)) {
const data = helmetData;
helmetData = new HelmetData(data.context, true);
delete newProps.helmetData;
}
return helmetData ? /* @__PURE__ */ import_react4.default.createElement(HelmetDispatcher, { ...newProps, context: helmetData.value }) : /* @__PURE__ */ import_react4.default.createElement(Context.Consumer, null, (context) => /* @__PURE__ */ import_react4.default.createElement(HelmetDispatcher, { ...newProps, context }));
}
};