Implement top-level await functionality

[leizongmin]

Implement top-level await support for ES modules in jssh.

This feature allows the await keyword to be used directly at the top level of ES modules (.mjs files), enabling asynchronous initialization and data fetching without wrapping code in an async function. The implementation involves detecting top-level await usage, transforming ES module export syntax, and wrapping the module's code in an asynchronous IIFE for execution.

[cursor]

Bug: ES Module Loader Malforms Exported Functions

The enhanced ES module loader's transformation for export function statements generates invalid JavaScript syntax. The regex replacement incorrectly modifies the function signature, resulting in malformed code like const temp_func = function name(; exportNamed("name", temp_func); function name( which causes runtime syntax errors. Additionally, the conditional check for applying this transformation is unreliable, potentially preventing correct function export due to false positives if the function name appears elsewhere in the content.

example/es-modules/enhanced-es-module.js#L78-L88

jssh/example/es-modules/enhanced-es-module.js

Lines 78 to 88 in 9203173

	);
	transformedContent = transformedContent.replace(
	/function\\s+([a-zA-Z_$][a-zA-Z0-9_$]*)\\s*\\(/g,
	(match, name) => {
	if (!transformedContent.includes(\`exportNamed("\${name}"\`)) {
	return match.replace('function', 'const temp_func = function') +
	\`; exportNamed("\${name}", temp_func); function \${name}\`;
	}
	return match;
	}
	);

Fix in Cursor • Fix in Web

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