How to validate InDesign libraries using InDesign javascript?

Hi Sunil,

Please try the below code to search the Library asset name through the reading file option. I hope this will works.

Using Javascript:

#targetengine 'session'
var libFile = new File("/Users/user/Downloads/testlib.indl");
libFile.open('r');
var contRead = libFile.read();
libFile.close();

//[Lib]Asset Name Property - Search Words from Read String
var res = contRead.match(/\[Lib\]Asset Name Property/ig);

if(res) {
    alert("Valid library file");
} else {
    alert("Invalid library file");
}

Using Applescript:

tell application "Finder"
	set libFile to POSIX file "/Users/user/Downloads/testlib.indl"
	set op to open for access libFile
	set contRead to read op
	close access op
	
	--[Lib]Asset Name Property - Find Words from Read String
	if contRead contains "[Lib]Asset Name Property" then
		display alert "Valid library file"
	else
		display alert "Invalid library file"
	end if
end tell

Thanks,

Annadurai.