replace_three_chunk.js

//snippet to easily include three.js shader chunks in your custom shaders

replaceThreeChunkFn(a, b) {
  return THREE.ShaderChunk[b] + '\n'
}

shaderParse(glsl) {
  return glsl.replace(/\/\/\s?chunk\(\s?(\w+)\s?\);/g, this.replaceThreeChunkFn)
}

//https://github.com/mrdoob/three.js/tree/dev/src/renderers/shaders/ShaderChunk

// chunk(shadowmap_vertex);
// chunk(bumpmap_pars_fragment);
// ...