mirror of
https://github.com/terribleplan/next.js.git
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141c045c68
* Prevent using 'next/router' APIs inside 'getInitialProps' * Remove incorrect documentation. * Make next/router a client only API.
57 lines
1.6 KiB
JavaScript
57 lines
1.6 KiB
JavaScript
import _Router from './router'
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// holds the actual router instance
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let router = null
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const SingletonRouter = {}
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// Create public properties and methods of the router in the SingletonRouter
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const propertyFields = ['components', 'pathname', 'route', 'query']
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const methodFields = ['push', 'replace', 'reload', 'back']
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propertyFields.forEach((field) => {
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// Here we need to use Object.defineProperty because, we need to return
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// the property assigned to the actual router
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// The value might get changed as we change routes and this is the
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// proper way to access it
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Object.defineProperty(SingletonRouter, field, {
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get () {
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throwIfNoRouter()
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return router[field]
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}
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})
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})
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methodFields.forEach((field) => {
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SingletonRouter[field] = (...args) => {
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throwIfNoRouter()
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return router[field](...args)
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}
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})
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function throwIfNoRouter () {
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if (!router) {
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const message = 'No router instance found.\n' +
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'You should only use "next/router" inside the client side of your app.\n'
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throw new Error(message)
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}
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}
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// Export the SingletonRouter and this is the public API.
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export default SingletonRouter
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// INTERNAL APIS
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// -------------
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// (do not use following exports inside the app)
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// Create a router and assign it as the singleton instance.
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// This is used in client side when we are initilizing the app.
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// This should **not** use inside the server.
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export const createRouter = function (...args) {
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router = new _Router(...args)
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return router
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}
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// Export the actual Router class, which is usually used inside the server
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export const Router = _Router
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