getCalleeFromStackTrace.js

getCalleeFromStackTrace.js

export const getCalleeFromStackTrace = () => {
    const e = new Error();
    const frame = e.stack.split(`\n`)[2]; // change to 3 for grandparent func
    // const lineNumber = frame.split(`:`).reverse()[1];
    // const functionName = frame.split(` `)[5];

    const regex = /(\S+)\s+\(([^:]+):(\d+):(\d+)\)/;
    const match = frame.trim().match(regex);
    
    if (!match) {
        return null;
    }

    const [, functionName, fileName, lineNumber] = match;
    return {
        functionName,
        fileName,
        lineNumber: parseInt(lineNumber)
    };
};