node-hashed-port's Introduction

hashed-port

Get a port number with a hash function.

Installation

npm i hashed-port

Usage

const { getPort } = require('hashed-port');

getPort((err, port) => {
  ...
});

getPort([options, ]callback)

options
- If this arg is a string, it is assumed options.key.
options.key
- Any string to compute a port number.
- If omitted, the environment variable npm_package_name is used. This is usefull for your CLI to has a default port number without conflicting with other applications.
callback(err, port)
- A function that is called to return a gotten port number.

License

MIT

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node-hashed-port's Issues

TypeError [ERR_INVALID_ARG_TYPE]: The "data" argument must be one of type string, TypedArray, or DataView. Received type undefined

version

0.1.0

Example code

const { getPort } = require('hashed-port');

getPort((err, data) => {
  if (err) {
    console.log(err);
  }
  console.log(data);  
});

Result

internal/crypto/hash.js:60
    throw new ERR_INVALID_ARG_TYPE('data',
    ^

TypeError [ERR_INVALID_ARG_TYPE]: The "data" argument must be one of type string, TypedArray, or DataView. Received type undefined
    at Hash.update (internal/crypto/hash.js:60:11)
    at findPort (/path/to/node_modules/hashed-port/lib/index.js:55:11)
    at readJsonFile (/path/to/node_modules/hashed-port/lib/index.js:39:18)
    at ReadFileContext.readFile [as callback] (/path/to/node_modules/hashed-port/lib/index.js:78:16)

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