8e3586d2cc
- Ensure React / other deps are deduped against main-app bundle - Only require web-vitals when it's needed - Move warnOnce into separate file as it's not tree shaken - Add create-next-app with bundle analyzer <details> <summary>13.0.0 (react-dom deduping bug)</summary> <img width="1912" alt="13-0-0" src="https://user-images.githubusercontent.com/6324199/199067942-d2394ffa-fc1c-4606-94f4-b489ef959a9b.png"> </details> <details> <summary>Canary (react-dom deduping bug fixed)</summary> <img width="1912" alt="current-canary-branch" src="https://user-images.githubusercontent.com/6324199/199067999-786b523e-b4f0-4044-8d2e-acaa0386771a.png"> </details> <details> <summary>This PR</summary> <img width="1912" alt="pr-changes" src="https://user-images.githubusercontent.com/6324199/199068060-2fdb6e11-8b94-4683-9b8e-65bb6faab34a.png"> </details> ## Bug - [ ] Related issues linked using `fixes #number` - [ ] Integration tests added - [ ] Errors have a helpful link attached, see `contributing.md` ## Feature - [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR. - [ ] Related issues linked using `fixes #number` - [ ] Integration tests added - [ ] Documentation added - [ ] Telemetry added. In case of a feature if it's used or not. - [ ] Errors have a helpful link attached, see `contributing.md` ## Documentation / Examples - [ ] Make sure the linting passes by running `pnpm build && pnpm lint` - [ ] The "examples guidelines" are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing/examples/adding-examples.md)
196 lines
5.9 KiB
TypeScript
196 lines
5.9 KiB
TypeScript
'use client'
|
|
|
|
import React, { useContext } from 'react'
|
|
import Effect from './side-effect'
|
|
import { AmpStateContext } from './amp-context'
|
|
import { HeadManagerContext } from './head-manager-context'
|
|
import { isInAmpMode } from './amp-mode'
|
|
import { warnOnce } from './utils/warn-once'
|
|
|
|
type WithInAmpMode = {
|
|
inAmpMode?: boolean
|
|
}
|
|
|
|
export function defaultHead(inAmpMode = false): JSX.Element[] {
|
|
const head = [<meta charSet="utf-8" />]
|
|
if (!inAmpMode) {
|
|
head.push(<meta name="viewport" content="width=device-width" />)
|
|
}
|
|
return head
|
|
}
|
|
|
|
function onlyReactElement(
|
|
list: Array<React.ReactElement<any>>,
|
|
child: React.ReactChild
|
|
): Array<React.ReactElement<any>> {
|
|
// React children can be "string" or "number" in this case we ignore them for backwards compat
|
|
if (typeof child === 'string' || typeof child === 'number') {
|
|
return list
|
|
}
|
|
// Adds support for React.Fragment
|
|
if (child.type === React.Fragment) {
|
|
return list.concat(
|
|
React.Children.toArray(child.props.children).reduce(
|
|
(
|
|
fragmentList: Array<React.ReactElement<any>>,
|
|
fragmentChild: React.ReactChild
|
|
): Array<React.ReactElement<any>> => {
|
|
if (
|
|
typeof fragmentChild === 'string' ||
|
|
typeof fragmentChild === 'number'
|
|
) {
|
|
return fragmentList
|
|
}
|
|
return fragmentList.concat(fragmentChild)
|
|
},
|
|
[]
|
|
)
|
|
)
|
|
}
|
|
return list.concat(child)
|
|
}
|
|
|
|
const METATYPES = ['name', 'httpEquiv', 'charSet', 'itemProp']
|
|
|
|
/*
|
|
returns a function for filtering head child elements
|
|
which shouldn't be duplicated, like <title/>
|
|
Also adds support for deduplicated `key` properties
|
|
*/
|
|
function unique() {
|
|
const keys = new Set()
|
|
const tags = new Set()
|
|
const metaTypes = new Set()
|
|
const metaCategories: { [metatype: string]: Set<string> } = {}
|
|
|
|
return (h: React.ReactElement<any>) => {
|
|
let isUnique = true
|
|
let hasKey = false
|
|
|
|
if (h.key && typeof h.key !== 'number' && h.key.indexOf('$') > 0) {
|
|
hasKey = true
|
|
const key = h.key.slice(h.key.indexOf('$') + 1)
|
|
if (keys.has(key)) {
|
|
isUnique = false
|
|
} else {
|
|
keys.add(key)
|
|
}
|
|
}
|
|
|
|
// eslint-disable-next-line default-case
|
|
switch (h.type) {
|
|
case 'title':
|
|
case 'base':
|
|
if (tags.has(h.type)) {
|
|
isUnique = false
|
|
} else {
|
|
tags.add(h.type)
|
|
}
|
|
break
|
|
case 'meta':
|
|
for (let i = 0, len = METATYPES.length; i < len; i++) {
|
|
const metatype = METATYPES[i]
|
|
if (!h.props.hasOwnProperty(metatype)) continue
|
|
|
|
if (metatype === 'charSet') {
|
|
if (metaTypes.has(metatype)) {
|
|
isUnique = false
|
|
} else {
|
|
metaTypes.add(metatype)
|
|
}
|
|
} else {
|
|
const category = h.props[metatype]
|
|
const categories = metaCategories[metatype] || new Set()
|
|
if ((metatype !== 'name' || !hasKey) && categories.has(category)) {
|
|
isUnique = false
|
|
} else {
|
|
categories.add(category)
|
|
metaCategories[metatype] = categories
|
|
}
|
|
}
|
|
}
|
|
break
|
|
}
|
|
|
|
return isUnique
|
|
}
|
|
}
|
|
|
|
/**
|
|
*
|
|
* @param headChildrenElements List of children of <Head>
|
|
*/
|
|
function reduceComponents<T extends {} & WithInAmpMode>(
|
|
headChildrenElements: Array<React.ReactElement<any>>,
|
|
props: T
|
|
) {
|
|
const { inAmpMode } = props
|
|
return headChildrenElements
|
|
.reduce(onlyReactElement, [])
|
|
.reverse()
|
|
.concat(defaultHead(inAmpMode).reverse())
|
|
.filter(unique())
|
|
.reverse()
|
|
.map((c: React.ReactElement<any>, i: number) => {
|
|
const key = c.key || i
|
|
if (
|
|
process.env.NODE_ENV !== 'development' &&
|
|
process.env.__NEXT_OPTIMIZE_FONTS &&
|
|
!inAmpMode
|
|
) {
|
|
if (
|
|
c.type === 'link' &&
|
|
c.props['href'] &&
|
|
// TODO(prateekbh@): Replace this with const from `constants` when the tree shaking works.
|
|
['https://fonts.googleapis.com/css', 'https://use.typekit.net/'].some(
|
|
(url) => c.props['href'].startsWith(url)
|
|
)
|
|
) {
|
|
const newProps = { ...(c.props || {}) }
|
|
newProps['data-href'] = newProps['href']
|
|
newProps['href'] = undefined
|
|
|
|
// Add this attribute to make it easy to identify optimized tags
|
|
newProps['data-optimized-fonts'] = true
|
|
|
|
return React.cloneElement(c, newProps)
|
|
}
|
|
}
|
|
if (process.env.NODE_ENV === 'development') {
|
|
// omit JSON-LD structured data snippets from the warning
|
|
if (c.type === 'script' && c.props['type'] !== 'application/ld+json') {
|
|
const srcMessage = c.props['src']
|
|
? `<script> tag with src="${c.props['src']}"`
|
|
: `inline <script>`
|
|
warnOnce(
|
|
`Do not add <script> tags using next/head (see ${srcMessage}). Use next/script instead. \nSee more info here: https://nextjs.org/docs/messages/no-script-tags-in-head-component`
|
|
)
|
|
} else if (c.type === 'link' && c.props['rel'] === 'stylesheet') {
|
|
warnOnce(
|
|
`Do not add stylesheets using next/head (see <link rel="stylesheet"> tag with href="${c.props['href']}"). Use Document instead. \nSee more info here: https://nextjs.org/docs/messages/no-stylesheets-in-head-component`
|
|
)
|
|
}
|
|
}
|
|
return React.cloneElement(c, { key })
|
|
})
|
|
}
|
|
|
|
/**
|
|
* This component injects elements to `<head>` of your page.
|
|
* To avoid duplicated `tags` in `<head>` you can use the `key` property, which will make sure every tag is only rendered once.
|
|
*/
|
|
function Head({ children }: { children: React.ReactNode }) {
|
|
const ampState = useContext(AmpStateContext)
|
|
const headManager = useContext(HeadManagerContext)
|
|
return (
|
|
<Effect
|
|
reduceComponentsToState={reduceComponents}
|
|
headManager={headManager}
|
|
inAmpMode={isInAmpMode(ampState)}
|
|
>
|
|
{children}
|
|
</Effect>
|
|
)
|
|
}
|
|
|
|
export default Head
|