Tent.js

Start with

Light or dark

Option

seo of screen

What search engines and shared links are told of the screen.

Value

A record of description, image, index, data and addresses. description is text, or an arrow over what the view is handed, which stands after data in the record: the type checker reads the record from its top, so an arrow above data is handed none of its names (option.screen.title). image is an asset or an address, or an arrow that gives one; or { view, size? }, a component that the engine draws into the picture of a shared link, handed the screen's answers, at [1200, 630] where size is left out. Such a picture is answered at /_t/seo/image/<screen>?<an address of the screen>: drawn as nobody in the hidden browser of tent shot at its first request, and kept until a write changes what it was drawn from, at most limits.seoImagesPerMinute (30) a minute for the app, one at a time; the head names it with its size. Only a screen open to anyone, whose own entries are too, may draw one. index: false asks search engines to leave the page out. data is structured data as any JSON. addresses is a read(query), for a screen whose address has values: the sitemap lists the screen once for each row.

The app answers /sitemap.xml with every screen that anyone may see and that does not say index: false, each written with the address the app was reached by: a screen with values in its address once for each row of addresses, and one with values and no addresses not at all. Past 50,000 addresses it is a list of /sitemap-1.xml, /sitemap-2.xml and so on. /robots.txt lets everything be read on live data and names the sitemap; in the modes development and test it lets nothing be read. The head of each page names its one address, <link rel="canonical">, written with the address the app was reached by. In an app of several languages it names the same screen in every language, itself among them, one <link rel="alternate" hreflang="<code>"> for each, then the screen in the default language as hreflang="x-default": in an app of en and tr, both /pricing and /tr/pricing name /pricing as en, /tr/pricing as tr, and /pricing as x-default (option.project.languages).

Example

TSX
import { screen, asset } from 'tentjs/ui'

export const ordersScreen = screen('ordersScreen', {
  path: '/prices',
  access: 'anyone',
  seo: { description: 'What each plan costs.', image: asset('prices.png') },
  view: () => <h1>Prices</h1>,
})

Errors

code.T1003: a name that seo does not have. code.T6032: a picture drawn of a component for a screen that is not open to anyone.

See also

word.screen

Tent.js