Function createRepl

lib/internal/debugger/inspect_repl.js:365–1250

(inspector)

}

function createRepl(inspector) {
  const { Debugger, HeapProfiler, Profiler, Runtime } = inspector;

  let repl;

  // Things we want to keep around
  const history = { control: [], debug: [] };
  const watchedExpressions = [];
  const knownBreakpoints = [];
  let heapSnapshotPromise = null;
  let pauseOnExceptionState = 'none';
  let lastCommand;

  // Things we need to reset when the app restarts
  let knownScripts;
  let currentBacktrace;
  let selectedFrame;
  let exitDebugRepl;
  let contextLineNumber = 2;
  let initialBreakRender;
  let waitForInitialBreakRender = false;

  function resetOnStart() {
    knownScripts = {};
    currentBacktrace = null;
    selectedFrame = null;

    if (exitDebugRepl) exitDebugRepl();
    exitDebugRepl = null;
  }
  resetOnStart();

  const INSPECT_OPTIONS = { colors: inspector.stdout.isTTY };
  function inspect(value) {
    return utilInspect(value, INSPECT_OPTIONS);
  }

  function print(value, addNewline = true) {
    const text = typeof value === 'string' ? value : inspect(value);
    return inspector.print(text, addNewline);
  }

  function getCurrentLocation() {
    if (!selectedFrame) {
      throw new ERR_DEBUGGER_ERROR('Requires execution to be paused');
    }
    return selectedFrame.location;
  }

  function isCurrentScript(script) {
    return selectedFrame && getCurrentLocation().scriptId === script.scriptId;
  }

  function formatScripts(displayNatives = false) {
    function isVisible(script) {
      if (displayNatives) return true;
      return !script.isNative || isCurrentScript(script);
    }