| Leo Repp | 58b9f11 | 2021-11-22 11:57:47 +0100 | [diff] [blame^] | 1 | var Symbol = require('./_Symbol'), |
| 2 | isArguments = require('./isArguments'), |
| 3 | isArray = require('./isArray'); |
| 4 | |
| 5 | /** Built-in value references. */ |
| 6 | var spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined; |
| 7 | |
| 8 | /** |
| 9 | * Checks if `value` is a flattenable `arguments` object or array. |
| 10 | * |
| 11 | * @private |
| 12 | * @param {*} value The value to check. |
| 13 | * @returns {boolean} Returns `true` if `value` is flattenable, else `false`. |
| 14 | */ |
| 15 | function isFlattenable(value) { |
| 16 | return isArray(value) || isArguments(value) || |
| 17 | !!(spreadableSymbol && value && value[spreadableSymbol]); |
| 18 | } |
| 19 | |
| 20 | module.exports = isFlattenable; |