isBuffer.js 951 B

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  1. var root = require('./_root'),
  2. stubFalse = require('./stubFalse');
  3. /** Detect free variable `exports`. */
  4. var freeExports = typeof exports == 'object' && exports;
  5. /** Detect free variable `module`. */
  6. var freeModule = freeExports && typeof module == 'object' && module;
  7. /** Detect the popular CommonJS extension `module.exports`. */
  8. var moduleExports = freeModule && freeModule.exports === freeExports;
  9. /** Built-in value references. */
  10. var Buffer = moduleExports ? root.Buffer : undefined;
  11. /**
  12. * Checks if `value` is a buffer.
  13. *
  14. * @static
  15. * @memberOf _
  16. * @since 4.3.0
  17. * @category Lang
  18. * @param {*} value The value to check.
  19. * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
  20. * @example
  21. *
  22. * _.isBuffer(new Buffer(2));
  23. * // => true
  24. *
  25. * _.isBuffer(new Uint8Array(2));
  26. * // => false
  27. */
  28. var isBuffer = !Buffer ? stubFalse : function(value) {
  29. return value instanceof Buffer;
  30. };
  31. module.exports = isBuffer;