old_contents: 
  const config = {
  
    development: {
      client: 'sqlite3',
      connection: {
        filename: './db/dev.sqlite3'
      }
    },
  
    staging: {
      client: 'postgresql',
      connection: {
        database: 'my_db',
        user:     'username',
        password: 'password'
      },
      pool: {
        min: 2,
        max: 10
      },
      migrations: {
        tableName: 'knex_migrations'
      }
    },
  
    production: {
      client: 'postgresql',
      connection: {
        database: 'my_db',
        user:     'username',
        password: 'password'
      },
      pool: {
        min: 2,
        max: 10
      },
      migrations: {
        tableName: 'knex_migrations'
      }
    }
  
  };
  
  module.exports = config;
  
new_contents: 
  const config = {
  
    dev: {
      client: 'sqlite3',
      connection: {
        filename: './db/dev.sqlite3'
      }
    },
  
    staging: {
      client: 'postgresql',
      connection: {
        database: 'my_db',
        user:     'username',
        password: 'password'
      },
      pool: {
        min: 2,
        max: 10
      },
      migrations: {
        tableName: 'knex_migrations'
      }
    },
  
    production: {
      client: 'postgresql',
      connection: {
        database: 'my_db',
        user:     'username',
        password: 'password'
      },
      pool: {
        min: 2,
        max: 10
      },
      migrations: {
        tableName: 'knex_migrations'
      }
    }
  
  };
  
  module.exports = config;
  
subject: Change development label to dev to match NODE_ENV