"use strict";

var _madge = require("madge");

var _madge2 = _interopRequireDefault(_madge);

var _child_process = require("child_process");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * Copyright (c) 2017-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */

(0, _child_process.exec)("flow check --profile", function (error, stdout, stderr) {
  error;
  stdout;
  /*
  pattern format:
  ...
  cycle detected among the following files:
      file1
      file2
      ...
      filen
  ... more flow output after unindented line
  */
  var start = stderr.indexOf("cycle detected among the following nodes");
  var lines = stderr.substr(start).split("\n").splice(1);
  var found_ecma = false;
  var found_realm = false;
  var cycle_len = 0;
  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = lines[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var line = _step.value;

      if (!line.startsWith("\t")) break;
      cycle_len += 1;
      found_ecma = found_ecma || line.includes("/ecma262/");
      found_realm = found_realm || line.includes("/realm.js");
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  if (found_ecma && found_realm) {
    console.error("Invalid Dependencies: ecma262/ is in a circular dependency with realm.js");
    process.exit(1);
  }
  console.log("Biggest cycle: " + cycle_len);
  var MAX_CYCLE_LEN = 56; // NEVER EVER increase this value
  if (cycle_len > MAX_CYCLE_LEN) {
    console.error("Error: You increased cycle length from the previous high of " + MAX_CYCLE_LEN);
    console.error("This is never OK.");
    process.exit(1);
  }
});

// NB: This doesn't prevent cycles using "import type" because those are
// erased in the lib folder but madge doesn't work with flow type imports.

(0, _madge2.default)("./lib/").then(function (res) {
  var deps = res.obj();
  var idx_deps = res.depends("intrinsics/index");
  if (idx_deps.length !== 1 || idx_deps[0] !== "construct_realm") {
    console.error("Invalid Dependency: Intrinsics index depends on " + idx_deps[0]);
    process.exit(1);
  }

  for (var dep in deps) {
    // Nothing in intrinsics/ecma262 depends on anything but intrinsics/index except Error and global.
    if (dep.startsWith("intrinsics/ecma262") && dep !== "intrinsics/ecma262/Error" && dep !== "intrinsics/ecma262/global") {
      var ext_deps = res.depends(dep).filter(function (depend) {
        return depend !== "intrinsics/index" && !depend.startsWith("intrinsics/ecma262");
      });
      if (ext_deps.length > 0) {
        console.error("Invalid Dependency: " + dep + " depends on " + ext_deps);
        process.exit(1);
      }
    }
  }
});
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