cesiumDemo/Source/ThirdParty/GltfPipeline/addBuffer.js

import addToArray from './addToArray.js'

    /**
     * Adds buffer to gltf.
     *
     * @param {Object} gltf A javascript object containing a glTF asset.
     * @param {Buffer} buffer A Buffer object which will be added to gltf.buffers.
     * @returns {Number} The bufferView id of the newly added bufferView.
     *
     * @private
     */
    function addBuffer(gltf, buffer) {
        var newBuffer = {
            byteLength: buffer.length,
            extras: {
                _pipeline: {
                    source: buffer
                }
            }
        };
        var bufferId = addToArray(gltf.buffers, newBuffer);
        var bufferView = {
            buffer: bufferId,
            byteOffset: 0,
            byteLength: buffer.length
        };
        return addToArray(gltf.bufferViews, bufferView);
    }

    export default addBuffer;