TypeError: Cannot read property 'ARRAY_BUFFER' of undefined (gl.ARRAY_BUFFER)

[deathcap]

Sometimes the engine fails to init, crashing with a null gl:

// voxel-mesher
  // load combined porous mesh into GL
  var gl = this.shell.gl;
  var verticesBuf = createBuffer(gl, new Float32Array(vertices));
…

// gl-buffer
function createBuffer(gl, data, type, usage) {
  type = type || gl.ARRAY_BUFFER // gl is undefined

WebGL not yet properly initialized? (race condition?)

[deathcap]

Called from:

// voxel-engine-stackgl

Game.prototype.showChunk = function(chunk, optionalPosition) {
  if (optionalPosition) chunk.position = optionalPosition

  var chunkIndex = chunk.position.join('|')
  var bounds = this.voxels.getBounds.apply(this.voxels, chunk.position)
  //console.log('showChunk',chunkIndex,'density=',JSON.stringify(chunkDensity(chunk)))

  var voxelArray = isndarray(chunk) ? chunk : ndarray(chunk.voxels, chunk.dims)
  var mesh = this.mesherPlugin.createVoxelMesh(this.shell.gl, voxelArray, this.stitcher.voxelSideTextureIDs, this.stitcher.voxelSideTextureSizes, chunk.position, this.chunkPad)

gl comes from this.shell.gl = https://www.npmjs.com/package/game-shell, or more specifically the extension https://www.npmjs.com/package/gl-now. gl is supposed to be ready when gl-init is fired:

shell.on("gl-init", function() {
  var gl = shell.gl

is this code executed before gl-init, or gl-init is fired before gl is ready?