How to use the stderr function from process

Find comprehensive JavaScript process.stderr code examples handpicked from public code repositorys.

process.stderr is a stream in Node.js that represents the standard error output of the current process.

install.js

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if (logStream === 'stdout') {
  return process.stdout;
}

if (logStream === 'stderr') {
  return process.stderr;
}

throw new Error(
  `Incorrect SENTRYCLI_LOG_STREAM env variable. Possible values: 'stdout' | 'stderr'`

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backslide.js

GitHub: sinedied/backslide

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    -- [Decktape opts]    Pass any Decktape options directly
`;

class BackslideCli {
  constructor() {
    this._stderrWrite = process.stderr.write;
    this._pwd = process.cwd();
  }

  /**

740

How does process.stderr work?

In Node.js, process.stderr is a stream that represents the standard error output of the current process. It is a writable stream, which means that data can be written to it and will be emitted as an error event if it is not handled. When an error occurs in a Node.js program, it is often written to process.stderr to help diagnose the issue. This stream can be accessed using the process.stderr property. To write data to process.stderr, developers can use the write method of the stream, which takes a string or buffer as an argument. They can also use the console.error method, which writes a string or object to process.stderr. process.stderr is a useful tool for debugging Node.js programs and diagnosing errors. It is often used in combination with other debugging and logging tools to help identify and resolve issues in Node.js applications.

backup-file-log.js

GitHub: uber/uncaught-exception

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// is no recovering
tryCatch(function append() {
    if (backupFile === 'stdout') {
        process.stdout.write(str);
    } else if (backupFile === 'stderr') {
        process.stderr.write(str);
    } else {
        fs.appendFileSync(backupFile, str);
    }
});

+ 3 other calls in file

dcp-worker

GitHub: Distributed-Compute-Labs/dcp-worker

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} catch(e) {};

function bail(exitCode) {
  try {
    const util = require('util');
    process.stderr.write('\nWorker stop timeout; bailing due to earlier unhandled rejection:\n');
    process.stderr.write(util.inspect(error) + '\n');
  } catch(e) {
    console.error(error);
  }

+ 7 other calls in file

Ai Example

1
process.stderr.write("An error has occurred!\n");

In this example, we use the write method of process.stderr to write the string "An error has occurred!\n" to the standard error output. This message will be emitted as an error event if it is not handled. When this code runs, it will write the error message "An error has occurred!" to the standard error output in the console. This demonstrates how process.stderr can be used to write error messages to the standard error output in a Node.js program.

dvb2ip.js

GitHub: Crawlerop/dtvserver

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    //ffmp.stderr.pipe(process.stderr)

    ffmp.stderr.on("data", (d) => {
        const lines = d.toString().split(os.EOL)
        for (let ln = 0; ln<lines.length; ln++) {
            if (lines[ln].length > 0) process.stderr.write(`${params.name}: ${lines[ln]}${os.EOL}`)
        }
    })
}).catch((e) => {
    console.trace(e)

backgroundApi.js

GitHub: joshuatazrein/riverrun-build

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    }

    // pass back the new tokens back to the app for storage
    return result;
  } catch (err) {
    _process.stderr.write(`\nERROR AT ${new Date().toDateString()}: ${err.message}, from request ${action} with data:\n    ${JSON.stringify(data)}`);
    return 'ERROR: ' + err.message;
  }
};
switch (action) {

command.js

GitHub: DerpWerp/dogeunblocker

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this._showSuggestionAfterError = true;

// see .configureOutput() for docs
this._outputConfiguration = {
  writeOut: (str) => process.stdout.write(str),
  writeErr: (str) => process.stderr.write(str),
  getOutHelpWidth: () => process.stdout.isTTY ? process.stdout.columns : undefined,
  getErrHelpWidth: () => process.stderr.isTTY ? process.stderr.columns : undefined,
  outputError: (str, write) => write(str)
};

+ 3 other calls in file

Other functions in process

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