Function loadOrderSort

tools/isobuild/package-source.js:53–140

(sourceProcessorSet, arch)

// Returns a sort comparator to order files into load order.
var loadOrderSort = function (sourceProcessorSet, arch) {
  const isTemplate = _.memoize((filename) => {
    const classification = sourceProcessorSet.classifyFilename(filename, arch);
    switch (classification.type) {
    case 'extension':
    case 'filename':
      if (! classification.sourceProcessors) {
        // This is *.js, not a template. #HardcodeJs
        return false;
      }
      if (classification.sourceProcessors.length > 1) {
        throw Error("conflicts in compiler?");
      }
      return classification.sourceProcessors[0].isTemplate;

    case 'legacy-handler':
      return classification.legacyIsTemplate;

    case 'wrong-arch':
    case 'unmatched':
    case 'meteor-ignore':
      return false;

    default:
      throw Error(`surprising type ${classification.type} for ${filename}`);
    }
  });

  return function (a, b) {
    // XXX MODERATELY SIZED HACK --
    // push template files ahead of everything else. this is
    // important because the user wants to be able to say
    //   Template.foo.events = { ... }
    // in a JS file and not have to worry about ordering it
    // before the corresponding .html file.
    //
    // maybe all of the templates should go in one file?
    var isTemplate_a = isTemplate(files.pathBasename(a));
    var isTemplate_b = isTemplate(files.pathBasename(b));
    if (isTemplate_a !== isTemplate_b) {
      return (isTemplate_a ? -1 : 1);
    }

    // main.* loaded last
    var ismain_a = (files.pathBasename(a).indexOf('main.') === 0);
    var ismain_b = (files.pathBasename(b).indexOf('main.') === 0);
    if (ismain_a !== ismain_b) {
      return (ismain_a ? 1 : -1);
    }

    // /lib/ loaded first
    var islib_a = (a.indexOf(files.pathSep + 'lib' + files.pathSep) !== -1 ||
                   a.indexOf('lib' + files.pathSep) === 0);
    var islib_b = (b.indexOf(files.pathSep + 'lib' + files.pathSep) !== -1 ||
                   b.indexOf('lib' + files.pathSep) === 0);
    if (islib_a !== islib_b) {
      return (islib_a ? -1 : 1);
    }