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before-power-off

Calls designated callback on ACPI Power Button event

Installation

npm i before-power-off -S

Initialization

const beforePowerOff = require('before-power-off');

Usage

beforePowerOff(callSomeNamedFunction);

beforePowerOff(function(){ // stuff to do before power off });

beforePowerOff( ()=>{ // stuff to do before power off } );

Features

  • Stealthy
    • doesn't do anything until a handler is set
    • cleans up after itself after triggering.
  • Can be called multiple times, creating multiple handlers.
  • Under the hood.
    • Listens for power button event on /var/run/acpid.socket
    • Emits an event on hidden EventEmitter
    • callbacks are registered internally using .once() not .on()
    • Cleans up by destroying the socket

Copyright

Copyright 2017 Paul Brewer drpaulbrewer@eaftc.com - Economic and Financial Technology Consulting LLC

License

Available under the terms of The MIT License