Ways to efficiently add numerous string elements to an array in JavaScript without encountering any errors

I have implemented a function to process a large array of strings (user names), checking for single quotes and pushing them into a new array before returning it.

However, I recently encountered an issue as the number of users in the list has grown substantially (currently 7418), causing this function to generate an error:

Caused by: java.lang.ClassFormatError: Invalid method Code length 105684 in class file org/mozilla/javascript/gen/c135516

Given that the version of javascript used is embedded in the application, upgrading it is currently not an option.

Is there a more efficient approach to achieve the same outcome? Are there alternative methods that could help prevent this error?

function listExcludedUsers(rInactive) {
    var result = new Array('user1', 'user2', 'user3', 'user4');

    for (var i = 0; i < rInactive.length; i++) {
        //replace single quote with two single quotes for DQL
        if (rInactive[i].indexOf("'") > 0) {
            rInactive[i] = rInactive[i].replace(/'/g, "''");
        }
        result.push(rInactive[i]);
    }
    return result;
}

Answer №1

The Java Virtual Machine (JVM) imposes a limit on the size of methods to 65536 bytes. If you encounter this issue with Mozilla, it may be a bug. You can report it (preferably with an example) at https://bugzilla.mozilla.org/.

In the meantime, you can try breaking down your method into smaller parts. For example, you can divide the input into smaller arrays, process them separately, and then concatenate the results. This can be achieved by utilizing different functions for each part.

Answer №2

It appears that the code is being executed on a JVM that has limitations on long method names, possibly due to the input provided in JavaScript. To troubleshoot, attempting to replicate the issue by modifying the input in the JavaScript code may help identify the cause of the excessively long methods in the JVM.

Experiment with different sets of inputs in your JavaScript code to see if the length of the methods in the JVM changes.

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