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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */

import {
  isStepping,
  getPauseReason,
  getSelectedFrame,
} from "../../selectors/index";
import { evaluateExpressions } from "../expressions";
import { inDebuggerEval } from "../../utils/pause/index";

/**
 * Debugger has just resumed.
 */
export function resumed(thread) {
  return async ({ dispatch, getState }) => {
    const why = getPauseReason(getState(), thread);
    const wasPausedInEval = inDebuggerEval(why);
    const wasStepping = isStepping(getState(), thread);

    dispatch({ type: "RESUME", thread, wasStepping });

    // Avoid updating expression if we are stepping and would re-pause right after,
    // the expression will be updated on next pause.
    if (!wasStepping && !wasPausedInEval) {
      const selectedFrame = getSelectedFrame(getState(), thread);
      await dispatch(evaluateExpressions(selectedFrame));
    }
  };
}