/usr/lib/nodejs/lazy-debug-legacy/src/index.js is in node-lazy-debug-legacy 0.0.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30  | var debug = require('debug');
var getModuleDebugId = require('./functions').getModuleDebugId;
var filter;
var cache = {};
var api = module.exports = {
  configure: function(opts) {
    if ( !opts ) opts = {};
    if ( opts.filter && typeof opts.filter === 'function' ) {
      filter = opts.filter;
      cache = {};
    }
  },
  get: function( filename, submoduleName ) {
    return debug(api.getModuleDebugName(filename, submoduleName));
  },
  getModuleDebugName: function ( filename, submoduleName ) {
    var name = cache[filename];
    if ( !name ) {
      name = getModuleDebugId(filename, {platform: process.platform, filter:filter});
      cache[filename] = name;
    }
    if ( submoduleName ) {
      return name + ':' + submoduleName;
    } else {
      return name;
    }
  }
};
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