old_contents: /**
   * @license
   * Copyright 2020 Google LLC
   * SPDX-License-Identifier: Apache-2.0
   */
  
  /**
   * @fileoverview Zelos specific objects representing inputs with connections on
   * a rendered block.
   * @author samelh@google.com (Sam El-Husseini)
   */
  
  goog.provide('Blockly.zelos.StatementInput');
  
  goog.require('Blockly.blockRendering.StatementInput');
  goog.require('Blockly.utils.object');
  
  goog.requireType('Blockly.blockRendering.ConstantProvider');
  goog.requireType('Blockly.Input');
  
  
  /**
   * An object containing information about the space a statement input takes up
   * during rendering
   * @param {!Blockly.blockRendering.ConstantProvider} constants The rendering
   *   constants provider.
   * @param {!Blockly.Input} input The statement input to measure and store
   *     information for.
   * @package
   * @constructor
   * @extends {Blockly.blockRendering.StatementInput}
   */
  Blockly.zelos.StatementInput = function(constants, input) {
    Blockly.zelos.StatementInput.superClass_.constructor.call(this,
        constants, input);
  
    if (this.connectedBlock) {
      // Find the bottom-most connected block in the stack.
      var block = this.connectedBlock;
      while (block.getNextBlock()) {
        block = block.getNextBlock();
      }
      if (!block.nextConnection) {
        this.height = this.connectedBlockHeight;
        this.connectedBottomNextConnection = true;
      }
    }
  };
  Blockly.utils.object.inherits(Blockly.zelos.StatementInput,
      Blockly.blockRendering.StatementInput);
  
new_contents: /**
   * @license
   * Copyright 2020 Google LLC
   * SPDX-License-Identifier: Apache-2.0
   */
  
  /**
   * @fileoverview Zelos specific objects representing inputs with connections on
   * a rendered block.
   * @author samelh@google.com (Sam El-Husseini)
   */
  
  goog.provide('Blockly.zelos.StatementInput');
  
  goog.require('Blockly.blockRendering.StatementInput');
  goog.require('Blockly.utils.object');
  
  goog.requireType('Blockly.blockRendering.ConstantProvider');
  goog.requireType('Blockly.Input');
  
  
  /**
   * An object containing information about the space a statement input takes up
   * during rendering
   * @param {!Blockly.blockRendering.ConstantProvider} constants The rendering
   *   constants provider.
   * @param {!Blockly.Input} input The statement input to measure and store
   *     information for.
   * @package
   * @constructor
   * @extends {Blockly.blockRendering.StatementInput}
   */
  Blockly.zelos.StatementInput = function(constants, input) {
    Blockly.zelos.StatementInput.superClass_.constructor.call(this,
        constants, input);
  
    if (this.connectedBlock) {
      // Find the bottom-most connected block in the stack.
      let block = this.connectedBlock;
      while (block.getNextBlock()) {
        block = block.getNextBlock();
      }
      if (!block.nextConnection) {
        this.height = this.connectedBlockHeight;
        this.connectedBottomNextConnection = true;
      }
    }
  };
  Blockly.utils.object.inherits(Blockly.zelos.StatementInput,
      Blockly.blockRendering.StatementInput);
  
subject: Migrate core/renderers/zelos/measurables/inputs.js to ES6 const/let