Platform Select

This little library allows you to define precedence which function evaluate based on the platform.

Usage

select({
  [platform: string]: Function
},
  [platform: string]: Function
}, ...): Promise

Currently, possible "Platform" values are (defined by Node):

• 'aix'
• 'darwin'
• 'freebsd'
• 'linux'
• 'openbsd'
• 'sunos'
• 'win32'

You can use _ as fallback for undefined platform.

The function returns Promise of value which is provided by function which win the selection, otherwise, throw an error in format No suitable job for "darwin"

The function could also throw an error Function for current platform ("darwin") is not defined! when you omit specifics platform definition.

Example

const select = require("platform-select");
const open = app => () => opn("https://google.com", { app });

select(
  {
    darwin: open("google chrome"),
    win32: open("chrome"),
    // on other platforms than Windows or Mac try to open...
    _: open("google-chrome")
  },
  {
    // if attempt to run Google Chrome was unsuccessful, let's run Safari...
    darwin: open("safari")
  }
).catch(e => {
  // when user is on Darwin and doesn't have Google Chrome or Safari (probably impossible :))
  console.error("Unable to run!", e);
}).then(e => {
  console.log("Returned value from 'open' function: ", e)  
};