function parseBlending(blending) {
  switch (blending) {
    case 'none':
      {
        return three__WEBPACK_IMPORTED_MODULE_3__.NoBlending;
      }
    case 'additive':
      {
        return three__WEBPACK_IMPORTED_MODULE_3__.AdditiveBlending;
      }
    case 'subtractive':
      {
        return three__WEBPACK_IMPORTED_MODULE_3__.SubtractiveBlending;
      }
    case 'multiply':
      {
        return three__WEBPACK_IMPORTED_MODULE_3__.MultiplyBlending;
      }
    default:
      {
        return three__WEBPACK_IMPORTED_MODULE_3__.NormalBlending;
      }
  }
}
Return a three.js constant determining blending

@param {string} [blending=normal] - `none`, additive`, `subtractive`,`multiply` or `normal`.
@returns {number}