"use strict";

System.register([], function (_export, _context) {
  "use strict";

  var CURRENT_SCHEMA_VERSION;
  function migratePanelSchema(panel) {
    if (isEmptyPanel(panel)) {
      return panel;
    }

    var schemaVersion = getSchemaVersion(panel);
    panel.schemaVersion = CURRENT_SCHEMA_VERSION;

    if (schemaVersion < 2) {
      panel.datasources = [panel.datasource];
      panel.targets = {};
      panel.targets[panel.datasources[0]] = panel.triggers;

      // delete old props
      delete panel.triggers;
      delete panel.datasource;
    }

    if (schemaVersion < 3) {
      // delete old props
      delete panel.lastChangeField;
      delete panel.ageField;
      delete panel.infoField;
      delete panel.scroll;
    }

    return panel;
  }

  _export("migratePanelSchema", migratePanelSchema);

  function getSchemaVersion(panel) {
    return panel.schemaVersion || 1;
  }

  function isEmptyPanel(panel) {
    return !panel.datasource && !panel.datasources && !panel.triggers && !panel.targets;
  }
  return {
    setters: [],
    execute: function () {
      CURRENT_SCHEMA_VERSION = 3;
    }
  };
});
//# sourceMappingURL=migrations.js.map