domain.bind()

domain.bind(callback)

callback <Function> The callback function
return: <Function> The bound function

The returned function will be a wrapper around the supplied callback function. When the returned function is called, any errors that are thrown will be routed to the domain's 'error' event.

Example

const d = domain.create();

function readSomeFile(filename, cb) {
  fs.readFile(filename, 'utf8', d.bind((er, data) => {
    // if this throws, it will also be passed to the domain
    return cb(er, data ? JSON.parse(data) : null);
  }));
}

d.on('error', (er) => {
  // an error occurred somewhere.
  // if we throw it now, it will crash the program
  // with the normal line number and stack message.
});

Links:

https://nodejs.org/dist/latest-v5.x/docs/api/domain.html#domain_domain_bind_callback

doc_Nodejs

2016-04-30 04:38:59

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