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node_modules/mime/src/build.js 1.32 KB
aaac7fed   liuqimichale   add
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  #!/usr/bin/env node
  
  'use strict';
  
  const fs = require('fs');
  const path = require('path');
  const mimeScore = require('mime-score');
  
  let db = require('mime-db');
  let chalk = require('chalk');
  
  const STANDARD_FACET_SCORE = 900;
  
  const byExtension = {};
  
  // Clear out any conflict extensions in mime-db
  for (let type in db) {
    let entry = db[type];
    entry.type = type;
  
    if (!entry.extensions) continue;
  
    entry.extensions.forEach(ext => {
      if (ext in byExtension) {
        const e0 = entry;
        const e1 = byExtension[ext];
        e0.pri = mimeScore(e0.type, e0.source);
        e1.pri = mimeScore(e1.type, e1.source);
  
        let drop = e0.pri < e1.pri ? e0 : e1;
        let keep = e0.pri >= e1.pri ? e0 : e1;
        drop.extensions = drop.extensions.filter(e => e !== ext);
  
        console.log(`${ext}: Keeping ${chalk.green(keep.type)} (${keep.pri}), dropping ${chalk.red(drop.type)} (${drop.pri})`);
      }
      byExtension[ext] = entry;
    });
  }
  
  function writeTypesFile(types, path) {
    fs.writeFileSync(path, JSON.stringify(types));
  }
  
  // Segregate into standard and non-standard types based on facet per
  // https://tools.ietf.org/html/rfc6838#section-3.1
  const types = {};
  
  Object.keys(db).sort().forEach(k => {
    const entry = db[k];
    types[entry.type] = entry.extensions;
  });
  
  writeTypesFile(types, path.join(__dirname, '..', 'types.json'));