1
0
Fork 0
mirror of https://github.com/terribleplan/next.js.git synced 2024-01-19 02:48:18 +00:00
next.js/lib/head.js

96 lines
2.4 KiB
JavaScript
Raw Normal View History

2016-10-07 01:57:31 +00:00
import React from 'react'
import PropTypes from 'prop-types'
2016-10-07 01:57:31 +00:00
import sideEffect from './side-effect'
class Head extends React.Component {
static contextTypes = {
headManager: PropTypes.object
2016-10-07 01:57:31 +00:00
}
render () {
return null
}
}
2016-11-17 23:06:54 +00:00
export function defaultHead () {
return [<meta charSet='utf-8' className='next-head' />]
}
2016-10-07 01:57:31 +00:00
function reduceComponents (components) {
return components
.map((c) => c.props.children)
.map((children) => React.Children.toArray(children))
.reduce((a, b) => a.concat(b), [])
.reduce((a, b) => {
if (React.Fragment && b.type === React.Fragment) {
return a.concat(React.Children.toArray(b.props.children))
}
return a.concat(b)
}, [])
2016-10-07 01:57:31 +00:00
.reverse()
2016-11-17 23:06:54 +00:00
.concat(...defaultHead())
.filter((c) => !!c)
2016-10-07 01:57:31 +00:00
.filter(unique())
.reverse()
.map((c) => {
Universal Webpack (#3578) * Speed up next build * Document webpack config * Speed up next build * Remove comment * Add comment * Clean up rules * Add comments * Run in parallel * Push plugins seperately * Create a new chunk for react * Don’t uglify react since it’s already uglified. Move react to commons in development * Use the minified version directly * Re-add globpattern * Move loaders into a separate variable * Add comment linking to Dan’s explanation * Remove dot * Add universal webpack * Initial dev support * Fix linting * Add changes from Arunoda's work * Made next dev works. But super slow and no HMR support. * Fix client side hot reload * Server side hmr * Only in dev * Add on-demand-entries client + hot-middleware * Add .babelrc support * Speed up on demand entries by running in parallel * Serve static generated files * Add missing config in dev * Add sass support * Add support for .map * Add cssloader config and fix .jsx support * Rename * use same defaults as css-loader. Fix linting * Add NoEmitErrorsPlugin * Add clientBootstrap * Use webpackhotmiddleware on the multi compiler * alpha.3 * Use babel 16.2.x * Fix reloading after error * Remove comment * Release 5.0.0-univeral-alpha.1 * Remove check for React 16 * Release 5.0.0-universal-alpha.2 * React hot loader v4 * Use our static file rendering machanism to serve pages. This should work well since the file path for a page is predictable. * Release 5.0.0-universal-alpha.3 * Remove optional loaders * Release 5.0.0-universal-alpha.4 * Remove clientBootstrap * Remove renderScript * Make sure pages bundles are served correctly * Remove unused import * Revert to using the same code as canary * Fix hot loader * Release 5.0.0-universal-alpha.5 * Check if externals dir exist before applying config * Add typescript support * Add support for transpiling certain packages in node_modules Thanks to @giuseppeg’s work in https://github.com/zeit/next.js/pull/3319 * Add BABEL_DISABLE_CACHE support * Make sourcemaps in production opt-in * Revert "Add support for transpiling certain packages in node_modules" This reverts commit d4b1d9babfb4b9ed4f4b12d56d52dee233e862da. In favor of a better api around this. * Support typescript through next.config.js * Remove comments * Bring back commons.js calculation * Remove unused dependencies * Move base.config.js to webpack.js * Make sure to only invalidate webpackDevMiddleware one after other. * Allow babel-loder caching by default. * Add comment about preact support * Bring back buildir replace * Remove obsolete plugin * Remove build replace, speed up build * Resolve page entries like pages/day/index.js to pages/day.js * Add componentDidCatch back * Compile to bundles * Use config.distDir everywhere * Make sure the file is an array * Remove console.log * Apply optimization to uglifyjs * Add comment pointing to source * Create entries the same way in dev and production * Remove unused and broken pagesGlobPattern * day/index.js is automatically turned into day.js at build time * Remove poweredByHeader option * Load pages with the correct path. * Release 5.0.0-universal-alpha.6 * Make sure react-dom/server can be overwritten by module-alias * Only add react-hot-loader babel plugin in dev * Release 5.0.0-universal-alpha.7 * Revert tests * Release 5.0.0-universal-alpha.10 * Make sure next/head is working properly. * Add wepack alias for 'next' back. * Make sure overriding className in next/head works * Alias react too * Add missing r * Fragment fallback has to wrap the children * Use min.js * Remove css.js * Remove wallaby.js * Release 5.0.0-universal-alpha.11 * Resolve relative to workdir instead of next * Make sure we touch the right file * Resolve next modules * Remove dotjsx removal plugins since we use webpack on the server * Revert "Resolve relative to workdir instead of next" This reverts commit a13f3e4ab565df9e2c9a3dfc8eb4009c0c2e02ed. * Externalize any locally loaded module lives outside of app dir. * Remove server aliases * Check node_modules reliably * Add symlink to next for tests * Make sure dynamic imports work locally. This is why we need it: https://github.com/webpack/webpack/blob/b545b519b2024e3f8be3041385bd326bf5d24449/lib/MainTemplate.js#L68 We need to have the finally clause in the above in __webpack_require__. webpack output option strictModuleExceptionHandling does that. * dynmaic -> dynamic * Remove webpack-node-externals * Make sure dynamic imports support SSR. * Remove css support in favor of next-css * Make sure we load path from `/` since it’s included in the path matching * Catch when ensurepage couldn’t be fulfilled for `.js.map` * Register require cache flusher for both client and server * Add comment explaining this is to facilitate hot reloading * Only load module when needed * Remove unused modules * Release 5.0.0-universal-alpha.12 * Only log the `found babel` message once * Make sure ondemand entries working correctly. Now we are just using a single instance of OnDemandEntryHandler. * Better sourcemaps * Release 5.0.0-universal-alpha.13 * Lock uglify version to 1.1.6 * Release 5.0.0-universal-alpha.14 * Fix a typo. * Introduce multi-zones support for mircofrontends * Add section on css
2018-01-30 15:40:52 +00:00
const className = (c.props && c.props.className ? c.props.className + ' ' : '') + 'next-head'
2016-10-07 01:57:31 +00:00
return React.cloneElement(c, { className })
})
}
function mapOnServer (head) {
return head
}
function onStateChange (head) {
if (this.context && this.context.headManager) {
this.context.headManager.updateHead(head)
}
}
const METATYPES = ['name', 'httpEquiv', 'charSet', 'itemProp', 'property']
2016-10-07 01:57:31 +00:00
// returns a function for filtering head child elements
// which shouldn't be duplicated, like <title/>.
function unique () {
const keys = new Set()
2016-10-07 01:57:31 +00:00
const tags = new Set()
const metaTypes = new Set()
const metaCategories = {}
return (h) => {
if (h.key && h.key.startsWith('.$')) {
if (keys.has(h.key)) return false
keys.add(h.key)
}
2016-10-07 01:57:31 +00:00
switch (h.type) {
case 'title':
case 'base':
if (tags.has(h.type)) return false
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') {
2016-10-07 01:57:31 +00:00
if (metaTypes.has(metatype)) return false
metaTypes.add(metatype)
} else {
const category = h.props[metatype]
const categories = metaCategories[metatype] || new Set()
if (categories.has(category)) return false
categories.add(category)
metaCategories[metatype] = categories
}
}
break
}
return true
}
}
export default sideEffect(reduceComponents, onStateChange, mapOnServer)(Head)