| Leo Repp | 58b9f11 | 2021-11-22 11:57:47 +0100 | [diff] [blame^] | 1 | var Symbol = require('./_Symbol'), |
| 2 | arrayMap = require('./_arrayMap'), |
| 3 | isArray = require('./isArray'), |
| 4 | isSymbol = require('./isSymbol'); |
| 5 | |
| 6 | /** Used as references for various `Number` constants. */ |
| 7 | var INFINITY = 1 / 0; |
| 8 | |
| 9 | /** Used to convert symbols to primitives and strings. */ |
| 10 | var symbolProto = Symbol ? Symbol.prototype : undefined, |
| 11 | symbolToString = symbolProto ? symbolProto.toString : undefined; |
| 12 | |
| 13 | /** |
| 14 | * The base implementation of `_.toString` which doesn't convert nullish |
| 15 | * values to empty strings. |
| 16 | * |
| 17 | * @private |
| 18 | * @param {*} value The value to process. |
| 19 | * @returns {string} Returns the string. |
| 20 | */ |
| 21 | function baseToString(value) { |
| 22 | // Exit early for strings to avoid a performance hit in some environments. |
| 23 | if (typeof value == 'string') { |
| 24 | return value; |
| 25 | } |
| 26 | if (isArray(value)) { |
| 27 | // Recursively convert values (susceptible to call stack limits). |
| 28 | return arrayMap(value, baseToString) + ''; |
| 29 | } |
| 30 | if (isSymbol(value)) { |
| 31 | return symbolToString ? symbolToString.call(value) : ''; |
| 32 | } |
| 33 | var result = (value + ''); |
| 34 | return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; |
| 35 | } |
| 36 | |
| 37 | module.exports = baseToString; |