loaders.gl/dist/es5/glb-writer/glb-accessor-utils.js

Framework-independent loaders for 3D graphics formats

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getAccessorType = getAccessorType;
exports.getAccessorComponentType = getAccessorComponentType;
var TYPES = ['SCALAR', 'VEC2', 'VEC3', 'VEC4'];
var ARRAY_TO_COMPONENT_TYPE = new Map([[Int8Array, 5120], [Uint8Array, 5121], [Int16Array, 5122], [Uint16Array, 5123], [Uint32Array, 5125], [Float32Array, 5126]]);

function getAccessorType(size) {
  var type = TYPES[size - 1];
  return type || TYPES[0];
}

function getAccessorComponentType(typedArray) {
  var componentType = ARRAY_TO_COMPONENT_TYPE.get(typedArray.constructor);

  if (!componentType) {
    throw new Error('Illegal typed array');
  }

  return componentType;
}
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