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var Symbol = require('./_Symbol'),
isSymbol = require('./isSymbol');
/** Used as references for various `Number` constants. */
var INFINITY = 1 / 0;
/** Used to convert symbols to primitives and strings. */
var symbolProto = Symbol ? Symbol.prototype : undefined,
symbolToString = Symbol ? symbolProto.toString : undefined;
/**
* Converts `value` to a string if it's not one. An empty string is returned
* for `null` and `undefined` values. The sign of `-0` is preserved.
*
* @static
* @memberOf _
* @category Lang
* @param {*} value The value to process.
* @returns {string} Returns the string.
* @example
*
* _.toString(null);
* // => ''
*
* _.toString(-0);
* // => '-0'
*
* _.toString([1, 2, 3]);
* // => '1,2,3'
*/
function toString(value) {
// Exit early for strings to avoid a performance hit in some environments.
if (typeof value == 'string') {
return value;
}
if (value == null) {
return '';
}
if (isSymbol(value)) {
return Symbol ? symbolToString.call(value) : '';
}
var result = (value + '');
return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
}
module.exports = toString;
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