node_modules/vue-loader/lib/select.js


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module.exports = function selectBlock (
  descriptor,
  loaderContext,
  query,
  appendExtension
) {
  // template
  if (query.type === `template`) {
    if (appendExtension) {
      loaderContext.resourcePath += '.' + (descriptor.template.lang || 'html')
    }
    loaderContext.callback(
      null,
      descriptor.template.content,
      descriptor.template.map
    )
    return
  }

  // script
  if (query.type === `script`) {
    if (appendExtension) {
      loaderContext.resourcePath += '.' + (descriptor.script.lang || 'js')
    }
    loaderContext.callback(
      null,
      descriptor.script.content,
      descriptor.script.map
    )
    return
  }

  // styles
  if (query.type === `style` && query.index != null) {
    const style = descriptor.styles[query.index]
    if (appendExtension) {
      loaderContext.resourcePath += '.' + (style.lang || 'css')
    }
    loaderContext.callback(
      null,
      style.content,
      style.map
    )
    return
  }

  // custom
  if (query.type === 'custom' && query.index != null) {
    const block = descriptor.customBlocks[query.index]
    loaderContext.callback(
      null,
      block.content,
      block.map
    )
    return
  }
}