Why do some stack traces show <anonymous>?
Because the function is anonymous, often an arrow function callback. Naming your functions produces clearer, more debuggable stack traces.
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More FAQs in JavaScript Debugging With Call Stack Traces
A snapshot of the call stack at the moment an error is thrown. It lists the active frames from the error site down to the entry point, with file names and line numbers.
Start at the top, which is where the error occurred. Walk down to see the chain of callers. The bottom entry is usually the entry point like an event handler or module load.
Because the code is minified. Enable source maps in your build so the engine can map minified positions back to the original source files and lines.
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