time-to-botec

Benchmark sampling in different programming languages
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_isKeyable.js (430B)

      1 /**
      2  * Checks if `value` is suitable for use as unique object key.
      3  *
      4  * @private
      5  * @param {*} value The value to check.
      6  * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
      7  */
      8 function isKeyable(value) {
      9   var type = typeof value;
     10   return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
     11     ? (value !== '__proto__')
     12     : (value === null);
     13 }
     14 
     15 module.exports = isKeyable;