Function js

packages/svelte/src/compiler/phases/2-analyze/index.js:217–235

* @param {AST.Script | null} script * @param {ScopeRoot} root * @param {boolean} allow_reactive_declarations * @param {Scope | null} parent * @returns {Js}

(script, root, allow_reactive_declarations, parent)

 * @returns {Js}
 */
function js(script, root, allow_reactive_declarations, parent) {
	/** @type {ESTree.Program} */
	const ast = script?.content ?? {
		type: 'Program',
		sourceType: 'module',
		start: -1,
		end: -1,
		body: []
	};

	const { scope, scopes, has_await } = create_scopes(
		ast,
		root,
		allow_reactive_declarations,
		parent
	);

	return { ast, scope, scopes, has_await };
}

/**
 * @param {string} filename