index.js

/* global hexo */
'use strict';

const { readFileSync } = require('fs');

const injector = require('hexo-extend-injector2')(hexo);

// hljs
const hljsCfg = Object.assign({theme: 'default'}, hexo.config.highlight, {hljs: true});
hexo.config.highlight = hljsCfg;
const resolveHljsThemePath = name => {
  if (!name) {
    return undefined;
  }
  return require.resolve(`highlight.js/styles/${name}.css`);
};
if (hljsCfg.enable) {
  require('./lib/load-css')(hexo)({
    light: resolveHljsThemePath(hljsCfg.theme),
    dark: resolveHljsThemePath(hljsCfg.theme_dark)
  });
}

// prism
const prismCfg = Object.assign({theme: 'default'}, hexo.config.prismjs);
hexo.config.prismjs = prismCfg;
const resolvePrismThemePath = name => {
  if (!name) {
    return undefined;
  }
  if (name === 'default') {
    // eslint-disable-next-line node/no-extraneous-require
    return require.resolve('prismjs/themes/prism.css');
  }
  try {
    return require.resolve(`prismjs/themes/prism-${name}.css`);
  } catch (ignore) {
    return require.resolve(`prism-themes/themes/prism-${name}.css`);
  }
};
if (prismCfg.enable) {
  require('./lib/load-css')(hexo)({
    light: resolvePrismThemePath(prismCfg.theme),
    dark: resolvePrismThemePath(prismCfg.theme_dark)
  });
  if (!prismCfg.preprocess) {
    // eslint-disable-next-line node/no-extraneous-require
    injector.register('js', readFileSync(require.resolve('prismjs'), 'utf-8'));
  }
  if (prismCfg.line_number) {
    // eslint-disable-next-line node/no-extraneous-require
    injector.register('style', readFileSync(require.resolve('prismjs/plugins/line-numbers/prism-line-numbers.css'), 'utf-8'));
    if (!prismCfg.preprocess) {
      // eslint-disable-next-line node/no-extraneous-require
      injector.register('js', readFileSync(require.resolve('prismjs/plugins/line-numbers/prism-line-numbers.js'), 'utf-8'));
    }
  }
}