index.js

'use strict';

const filters = require('./lib/filters');
const revision = require('./lib/revision');
const config = hexo.config;


/**
 * Start things is hexo.config.asset_pipeline is defined in _config.yaml.
 */

if(config.asset_pipeline){
  /**
   * CSS config.
   */
  const cleanCssDefaults = {};
  const cssConfig = {
    exclude: ['*.min.css']
  };

  config.asset_pipeline.clean_css = Object.assign(cleanCssDefaults, cssConfig, config.asset_pipeline.clean_css || {});

  hexo.extend.filter.register('after_render:css', filters.css);


  /**
   * Js config.
   */
  const uglifyjsDefaults = {
    mangle: true
  };
  const jsConfig = {
    exclude: ['*.min.js']
  };

  config.asset_pipeline.uglify_js = Object.assign(uglifyjsDefaults, jsConfig, config.asset_pipeline.uglify_js || {});

  hexo.extend.filter.register('after_render:js', filters.js);


  /**
   * HTML config.
   */
  const htmlMinifierDefaults = {
    ignoreCustomComments: [/^\s*more/],
    removeComments: true,
    removeCommentsFromCDATA: true,
    collapseWhitespace: true,
    collapseBooleanAttributes: true,
    removeEmptyAttributes: true,
    minifyJS: true,
    minifyCSS: true
  };
  const htmlConfig = {
    exclude: []
  }

  config.asset_pipeline.html_minifier = Object.assign(htmlMinifierDefaults, htmlConfig, config.asset_pipeline.html_minifier || {});

  hexo.extend.filter.register('after_render:html', filters.html);


  /**
   * Image config.
   */
  const imageminDefaults = {
    interlaced: false,
    multipass: false,
    optimizationLevel: 3,
    pngquant: false,
    progressive: false
  }
  const imageConfig = {};

  config.asset_pipeline.imagemin = Object.assign(imageminDefaults, imageConfig, config.asset_pipeline.imagemin || {});

  hexo.extend.filter.register('after_generate', filters.image);


  /**
   * Hook to enable revisioning.
   */
  const revisioningDefaults = {
    exclude: []
  };
  const soupConfig = {
    selectors: {
      'img[data-src]': 'data-src',
      'img[src]': 'src',
      'link[rel="apple-touch-icon"]': 'href',
      'link[rel="icon"]': 'href',
      'link[rel="shortcut icon"]': 'href',
      'link[rel="stylesheet"]': 'href',
      'script[src]': 'src',
      'source[src]': 'src',
      'video[poster]': 'poster'
    }
  };

  config.asset_pipeline.revisioning= Object.assign(revisioningDefaults, soupConfig, config.asset_pipeline.revisioning || {});

  if(config.asset_pipeline.revisioning.enable){
    hexo.extend.filter.register('after_generate', revision);
  }

  hexo.extend.filter.register('after_init', function(){
    // Setup assetPipeline for caching data
    hexo.assetPipeline = {
      revIndex: {}
    }
  });
}