Script to trace every console.log / warn / error and process.stdout.write after it executes (process.stdout part only for nodejs context)

nodejs-find-where-logged.js

['log', 'warn', 'error'].forEach((methodName) => {
    // @ts-ignore
    const originalMethod = console[methodName];
    // @ts-ignore
    console[methodName] = (...args) => {
        let initiator = 'unknown place';
        try {
            throw new Error();
        } catch (e) {
            // @ts-ignore
            initiator = e.stack.substring(e.stack.indexOf('\n')+1);//e.stack.split('\n').slice(1).join('\n');
        }
        originalMethod.apply(console, [methodName, ...args, '\n', `  at ${initiator}`]);
    };
});
if (typeof process === 'object' && typeof process.stdout === 'object') {
    // @ts-ignore
    const originalMethod = process.stdout["write"];
    // @ts-ignore
    process.stdout["write"] = (...args) => {
        originalMethod.call(process.stdout, args[0]);
        let initiator = 'unknown place';
        try {
            throw new Error();
        } catch (e) {
            // @ts-ignore
            initiator = e.stack.substring(e.stack.indexOf('\n')+1);//e.stack.split('\n').slice(1).join('\n');
        }
        originalMethod.call(process.stdout, `${(args[0][args[0].length-1] === '\n') ? '\n' : ''}${initiator}\n`);
    };
}