All files / lib/internal/util inspector.js

100% Statements 69/69
80% Branches 8/10
100% Functions 3/3
100% Lines 69/69

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 7025x 25x 25x 25x 25x 25x 25x 25x 25x 25x 25x 891x 891x 891x 891x 891x 891x 891x 891x 891x 891x 891x 891x 25x 25x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 3x 25x 25x 806x 806x 806x 18538x 18538x 18538x 18538x 15314x 15314x 15314x 15314x 15314x 15314x 15314x 15314x 15314x 15314x 18538x 3224x 3224x 3224x 18538x 806x 25x 25x 25x 25x 25x 25x  
'use strict';
 
const {
  ArrayPrototypeConcat,
  FunctionPrototypeBind,
  ObjectDefineProperty,
  ObjectKeys,
  ObjectPrototypeHasOwnProperty,
} = 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) {
  const { consoleCall, console: consoleFromVM } = 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 (ObjectPrototypeHasOwnProperty(consoleFromNode, key)) {
      consoleFromNode[key] = FunctionPrototypeBind(
        consoleCall,
        consoleFromNode,
        consoleFromVM[key],
        consoleFromNode[key]
      );
      ObjectDefineProperty(consoleFromNode[key], 'name', {
        __proto__: null,
        value: key
      });
    } else {
      // Add additional console APIs from the inspector
      consoleFromNode[key] = consoleFromVM[key];
    }
  }
}
 
module.exports = {
  installConsoleExtensions,
  sendInspectorCommand,
  wrapConsole,
};