postinstall.js

const chalk = require("chalk");
const { readFile, writeFile, copyFile } = require("fs").promises;

console.log(chalk.green("here"));

function log(...args) {
	console.log(chalk.yellow("[react-native-maps]"), ...args);
}

reactNativeMaps = async function () {
	log(
		"📦 Creating web compatibility of react-native-maps using an empty module loaded on web builds"
	);
	const modulePath = "node_modules/react-native-maps";
	await writeFile(
		`${modulePath}/lib/index.web.js`,
		"module.exports = {}",
		"utf-8"
	);
	await copyFile(
		`${modulePath}/lib/index.d.ts`,
		`${modulePath}/lib/index.web.d.ts`
	);
	const pkg = JSON.parse(await readFile(`${modulePath}/package.json`));
	pkg["react-native"] = "lib/index.js";
	pkg["main"] = "lib/index.web.js";
	await writeFile(
		`${modulePath}/package.json`,
		JSON.stringify(pkg, null, 2),
		"utf-8"
	);
	log("✅ script ran successfully");
};

reactNativeMaps();