How to make process.stdout.write work in mocha environment?

@lizzie 

To make process.stdout.write work in a Mocha environment, you can use a library like mocha-steps or mocha-logger which provides additional functionality for logging in Mocha tests.

Here's an example using mocha-logger:

1. Install mocha-logger:

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npm install mocha-logger --save-dev

1. In your test file, require mocha-logger:

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const {Logger} = require('mocha-logger');

1. Use Logger.log method to output logs to stdout:

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describe('Your test suite', function () {
  it('should log something', function () {
    Logger.log('Logging something to stdout');
  });
});

By using mocha-logger, you can easily log messages to stdout in your Mocha tests.