old_contents: import VODescriptor from './v_o_descriptor'
  import VOPool from './v_o_pool'
  import AABB2 from './aabb2'
  import BlendMode from './blend_mode'
  import ElementIndexArray from './element_index_array'
  import PowerOf2Image from './power_of_2_image'
  import Projection from './projection'
  import ResourceLibrary from './resource_library'
  import ShaderAttribValue from './shader_attrib_value'
  import ShaderAttribVariable from './shader_attrib_variable'
  import ShaderContext from './shader_context'
  import ShaderProgram from './shader_program'
  import ShaderSource from './shader_source'
  import ShaderTexture2dVariable from './shader_texture_2d_variable'
  import ShaderTextureGroup from './shader_texture_group'
  import ShaderUniformVariable from './shader_uniform_variable'
  import ShaderVariable from './shader_variable'
  import ShaderVariableAlias from './shader_variable_alias'
  import ShaderVariableBufferGroup from './shader_variable_buffer_group'
  import ShaderVariableGroup from './shader_variable_group'
  import SpriteGroup from './sprite_group'
  import Texture from './texture'
  import TextureAtlas from './texture_atlas'
  import TextureAtlasSpec from './texture_atlas_spec'
  import TextureLibrary from './texture_library'
  import TextureState from './texture_state'
  import VOArray from './v_o_array'
  import VOAttrDescriptor from './v_o_attr_descriptor'
  import Viewport from './Viewport'
  
  import {
    VO_HINT_STATIC,
    VO_HINT_DYNAMIC
  } from './constants'
  
  export {
    AABB2,
    BlendMode,
    ElementIndexArray,
    PowerOf2Image,
    Projection,
    ResourceLibrary,
    ShaderAttribValue,
    ShaderAttribVariable,
    ShaderContext,
    ShaderProgram,
    ShaderSource,
    ShaderTexture2dVariable,
    ShaderTextureGroup,
    ShaderUniformVariable,
    ShaderVariable,
    ShaderVariableAlias,
    ShaderVariableBufferGroup,
    ShaderVariableGroup,
    SpriteGroup,
    Texture,
    TextureAtlas,
    TextureAtlasSpec,
    TextureLibrary,
    TextureState,
    VOArray,
    VOAttrDescriptor,
    VODescriptor,
    VOPool,
    VO_HINT_DYNAMIC,
    VO_HINT_STATIC,
    Viewport
  }
  
new_contents: import VODescriptor from './v_o_descriptor'
  import VOPool from './v_o_pool'
  import AABB2 from './aabb2'
  import BlendMode from './blend_mode'
  import ElementIndexArray from './element_index_array'
  import PowerOf2Image from './power_of_2_image'
  import Projection from './projection'
  import ResourceLibrary from './resource_library'
  import ShaderAttribValue from './shader_attrib_value'
  import ShaderAttribVariable from './shader_attrib_variable'
  import ShaderContext from './shader_context'
  import ShaderProgram from './shader_program'
  import ShaderSource from './shader_source'
  import ShaderTexture2dVariable from './shader_texture_2d_variable'
  import ShaderTextureGroup from './shader_texture_group'
  import ShaderUniformVariable from './shader_uniform_variable'
  import ShaderVariable from './shader_variable'
  import ShaderVariableAlias from './shader_variable_alias'
  import ShaderVariableBufferGroup from './shader_variable_buffer_group'
  import ShaderVariableGroup from './shader_variable_group'
  import SpriteGroup from './sprite_group'
  import Texture from './texture'
  import TextureAtlas from './texture_atlas'
  import TextureAtlasSpec from './texture_atlas_spec'
  import TextureLibrary from './texture_library'
  import TextureState from './texture_state'
  import VOArray from './v_o_array'
  import VOAttrDescriptor from './v_o_attr_descriptor'
  import Viewport from './viewport'
  
  import {
    VO_HINT_STATIC,
    VO_HINT_DYNAMIC
  } from './constants'
  
  export {
    AABB2,
    BlendMode,
    ElementIndexArray,
    PowerOf2Image,
    Projection,
    ResourceLibrary,
    ShaderAttribValue,
    ShaderAttribVariable,
    ShaderContext,
    ShaderProgram,
    ShaderSource,
    ShaderTexture2dVariable,
    ShaderTextureGroup,
    ShaderUniformVariable,
    ShaderVariable,
    ShaderVariableAlias,
    ShaderVariableBufferGroup,
    ShaderVariableGroup,
    SpriteGroup,
    Texture,
    TextureAtlas,
    TextureAtlasSpec,
    TextureLibrary,
    TextureState,
    VOArray,
    VOAttrDescriptor,
    VODescriptor,
    VOPool,
    VO_HINT_DYNAMIC,
    VO_HINT_STATIC,
    Viewport
  }
  
subject: fix import case-sensitiv issue