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Dir : ~/usr/share/nodejs/js-yaml/lib/

Edit File: common.js

'use strict';

function isNothing(subject) {
  return (typeof subject === 'undefined') || (subject === null);
}

function isObject(subject) {
  return (typeof subject === 'object') && (subject !== null);
}

function toArray(sequence) {
  if (Array.isArray(sequence)) return sequence;
  else if (isNothing(sequence)) return [];

return [ sequence ];
}

function extend(target, source) {
  var index, length, key, sourceKeys;

if (source) {
    sourceKeys = Object.keys(source);

for (index = 0, length = sourceKeys.length; index < length; index += 1) {
      key = sourceKeys[index];
      target[key] = source[key];
    }
  }

return target;
}

function repeat(string, count) {
  var result = '', cycle;

for (cycle = 0; cycle < count; cycle += 1) {
    result += string;
  }

return result;
}

function isNegativeZero(number) {
  return (number === 0) && (Number.NEGATIVE_INFINITY === 1 / number);
}

module.exports.isNothing      = isNothing;
module.exports.isObject       = isObject;
module.exports.toArray        = toArray;
module.exports.repeat         = repeat;
module.exports.isNegativeZero = isNegativeZero;
module.exports.extend         = extend;