74 lines
2 KiB
JavaScript
74 lines
2 KiB
JavaScript
import { format } from 'url'
|
|
|
|
export function execOnce (fn) {
|
|
let used = false
|
|
return (...args) => {
|
|
if (!used) {
|
|
used = true
|
|
fn.apply(this, args)
|
|
}
|
|
}
|
|
}
|
|
|
|
export function getLocationOrigin () {
|
|
const { protocol, hostname, port } = window.location
|
|
return `${protocol}//${hostname}${port ? ':' + port : ''}`
|
|
}
|
|
|
|
export function getURL () {
|
|
const { href } = window.location
|
|
const origin = getLocationOrigin()
|
|
return href.substring(origin.length)
|
|
}
|
|
|
|
export function getDisplayName (Component) {
|
|
if (typeof Component === 'string') {
|
|
return Component
|
|
}
|
|
|
|
return Component.displayName || Component.name || 'Unknown'
|
|
}
|
|
|
|
export function isResSent (res) {
|
|
return res.finished || res.headersSent
|
|
}
|
|
|
|
export async function loadGetInitialProps (Component, ctx) {
|
|
if (process.env.NODE_ENV !== 'production') {
|
|
if (Component.prototype && Component.prototype.getInitialProps) {
|
|
const message = `"${getDisplayName(Component)}.getInitialProps()" is defined as an instance method - visit https://err.sh/zeit/next.js/get-initial-props-as-an-instance-method for more information.`
|
|
throw new Error(message)
|
|
}
|
|
}
|
|
|
|
if (!Component.getInitialProps) return {}
|
|
|
|
const props = await Component.getInitialProps(ctx)
|
|
|
|
if (ctx.res && isResSent(ctx.res)) {
|
|
return props
|
|
}
|
|
|
|
if (!props) {
|
|
const message = `"${getDisplayName(Component)}.getInitialProps()" should resolve to an object. But found "${props}" instead.`
|
|
throw new Error(message)
|
|
}
|
|
|
|
return props
|
|
}
|
|
|
|
export const urlObjectKeys = ['auth', 'hash', 'host', 'hostname', 'href', 'path', 'pathname', 'port', 'protocol', 'query', 'search', 'slashes']
|
|
|
|
export function formatWithValidation (url, options) {
|
|
if (process.env.NODE_ENV === 'development') {
|
|
if (url !== null && typeof url === 'object') {
|
|
Object.keys(url).forEach((key) => {
|
|
if (urlObjectKeys.indexOf(key) === -1) {
|
|
console.warn(`Unknown key passed via urlObject into url.format: ${key}`)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
return format(url, options)
|
|
}
|