All files / lib/internal/util inspector.js

100% Statements 75/75
83.33% Branches 10/12
100% Functions 5/5
100% Lines 75/75

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 7627x 27x 27x 27x 27x 27x 27x 27x 27x 27x 898x 898x 898x 898x 898x 898x 898x 898x 898x 898x 898x 898x 27x 27x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 27x 27x 572x 572x 572x 13156x 13156x 13156x 13156x 10868x 10868x 10868x 10868x 10868x 10868x 10868x 10868x 10868x 13156x 2288x 2288x 2288x 13156x 572x 27x 27x 27x 27x 27x 27x 27x 27x 118x 27x 27x 572x 572x 27x  
'use strict';
 
const {
  ArrayPrototypeConcat,
  FunctionPrototypeBind,
  ObjectDefineProperty,
  ObjectKeys,
} = primordials;
 
let session;
function sendInspectorCommand(cb, onError) {
  const { hasInspector } = internalBinding('config');
  if (!hasInspector) return onError();
  const inspector = require('inspector');
  if (session === undefined) session = new inspector.Session();
  session.connect();
  try {
    return cb(session);
  } finally {
    session.disconnect();
  }
}
 
// Create a special require function for the inspector command line API
function installConsoleExtensions(commandLineApi) {
  if (commandLineApi.require) { return; }
  const { tryGetCwd } = require('internal/process/execution');
  const CJSModule = require('internal/modules/cjs/loader').Module;
  const { makeRequireFunction } = require('internal/modules/cjs/helpers');
  const consoleAPIModule = new CJSModule('<inspector console>');
  const cwd = tryGetCwd();
  consoleAPIModule.paths = ArrayPrototypeConcat(
    CJSModule._nodeModulePaths(cwd),
    CJSModule.globalPaths
  );
  commandLineApi.require = makeRequireFunction(consoleAPIModule);
}
 
// Wrap a console implemented by Node.js with features from the VM inspector
function wrapConsole(consoleFromNode, consoleFromVM) {
  const { consoleCall } = internalBinding('inspector');
  for (const key of ObjectKeys(consoleFromVM)) {
    // If global console has the same method as inspector console,
    // then wrap these two methods into one. Native wrapper will preserve
    // the original stack.
    if (consoleFromNode.hasOwnProperty(key)) {
      consoleFromNode[key] = FunctionPrototypeBind(
        consoleCall,
        consoleFromNode,
        consoleFromVM[key],
        consoleFromNode[key]
      );
      ObjectDefineProperty(consoleFromNode[key], 'name', {
        value: key
      });
    } else {
      // Add additional console APIs from the inspector
      consoleFromNode[key] = consoleFromVM[key];
    }
  }
}
 
// Stores the console from VM, should be set during bootstrap.
let consoleFromVM;
module.exports = {
  installConsoleExtensions,
  sendInspectorCommand,
  wrapConsole,
  get consoleFromVM() {
    return consoleFromVM;
  },
  set consoleFromVM(val) {
    consoleFromVM = val;
  }
};