lint `main` and `bin` file paths about finepack HOT 2 OPEN

'use strict';

var exists = require('fs').existsSync;

var pkg = require('./package.json');

if (pkg.main) {
  checkFile(pkg.main);
}

if (pkg.bin) {
  switch (typeof pkg.bin) {
  case 'string':
    checkFile(pkg.bin);
    break;

  case 'object':
    Object.keys(pkg.bin).forEach(function (key) {
      checkFile(pkg.bin[key]);
    });
    break;
  }
}

function checkFile(file) {
  if (!exists(file)) {
    console.error('%s doesn\'t exist.', file);
  }
}