Add Expo v53 schema and test

[GreenDjango]

Hello,

This adds the Expo SDK 53 app manifest schema, along with a generic test schema inspired by the Bluesky app.json as a real-world use case.

For reference, the following script was used to transform the Expo partial JSON schema into a complete JSON schema:

script.js

import fs from "node:fs/promises"

function cleanProperties(obj) {
 if ("meta" in obj) delete obj["meta"]
 if ("example" in obj) delete obj["example"]
 if ("exampleString" in obj) delete obj["exampleString"]
 if ("tsType" in obj) delete obj["tsType"]
 if ("fallback" in obj) {
   obj["default"] = obj["fallback"]
   delete obj["fallback"]
 }
 if (
   typeof obj["description"] === "string" &&
   obj["description"].startsWith("@deprecated ")
 ) {
   obj["deprecated"] = true
 }
 if (Array.isArray(obj["type"]) && obj["type"].length > 1) {
   obj["anyOf"] = obj["type"].map((v) => ({ type: v }))
   delete obj["type"]
 }

 for (const key in obj) {
   if (obj[key] && typeof obj[key] === "object") cleanProperties(obj[key])
 }
}

async function main() {
 const version = parseInt(process.argv[2], 10)
 const source = await fetch(
   `https://raw.githubusercontent.com/expo/expo/refs/heads/main/docs/public/static/schemas/v${version}.0.0/app-config-schema.json`
 )
 const data = await source.json()
 // Global converstion
 cleanProperties(data)

 // Version specific converstion
 if (version === 53) {
   data.plugins.items.anyOf[1] = {
     type: "array",
     items: [{ type: "string" }],
     minItems: 1,
     maxItems: 1,
   }
   data.plugins.items.anyOf[2] = {
     type: "array",
     items: [{ type: "string" }, { type: "object" }],
     minItems: 2,
     maxItems: 2,
   }
   delete data.experiments.properties.buildCacheProvider.additionalProperties
   data.android.properties.package.pattern =
     data.android.properties.package.pattern.replaceAll("\\_", "_")
 }

 await fs.writeFile(
   `expo-${version}.0.0.json`,
   `{
 "$id": "https://json.schemastore.org/expo-${version}.0.0.json",
 "$schema": "http://json-schema.org/draft-07/schema#",
 "title": "JSON schema for Expo SDK ${version} app manifest",
 "type": "object",
 "additionalProperties": true,
 "properties": {
   "expo": {
     "description": "Expo SDK ${version} app manifest",
     "type": "object",
     "required": ["name", "slug"],
     "additionalProperties": false,
     "properties": ${JSON.stringify(data, undefined, 2).replaceAll("\n", "\n      ")}
   }
 }
}`,
   { encoding: "utf-8" }
 )
}

await main()

Have a great day!

[github-actions]

Thanks for the PR!

This section of the codebase is owned by @madskristensen and @hyperupcall - if they write a comment saying "LGTM" then it will be merged.

[hyperupcall]

Thanks!