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'use strict';
/**
* Module dependencies
*/
exports.extend = require('extend-shallow');
exports.SourceMap = require('source-map');
exports.sourceMapResolve = require('source-map-resolve');
/**
* Convert backslash in the given string to forward slashes
*/
exports.unixify = function(fp) {
return fp.split(/\\+/).join('/');
};
/**
* Return true if `val` is a non-empty string
*
* @param {String} `str`
* @return {Boolean}
*/
exports.isString = function(str) {
return str && typeof str === 'string';
};
/**
* Cast `val` to an array
* @return {Array}
*/
exports.arrayify = function(val) {
if (typeof val === 'string') return [val];
return val ? (Array.isArray(val) ? val : [val]) : [];
};
/**
* Get the last `n` element from the given `array`
* @param {Array} `array`
* @return {*}
*/
exports.last = function(arr, n) {
return arr[arr.length - (n || 1)];
};