kotlin-node/node.vm/SourceTextModule/SourceTextModule

SourceTextModule

constructor(code: String, options: SourceTextModuleOptions = definedExternally)(source)

Creates a new SourceTextModule instance.

Properties assigned to the import.meta object that are objects may allow the module to access information outside the specified context. Use vm.runInContext() to create objects in a specific context.

import vm from 'node:vm';

const contextifiedObject = vm.createContext({ secret: 42 });

const module = new vm.SourceTextModule(
  'Object.getPrototypeOf(import.meta.prop).secret = secret;',
  {
    initializeImportMeta(meta) {
      // Note: this object is created in the top context. As such,
      // Object.getPrototypeOf(import.meta.prop) points to the
      // Object.prototype in the top context rather than that in
      // the contextified object.
      meta.prop = {};
    },
  });
// The module has an empty `moduleRequests` array.
module.linkRequests([]);
module.instantiate();
await module.evaluate();

// Now, Object.prototype.secret will be equal to 42.
//
// To fix this problem, replace
//     meta.prop = {};
// above with
//     meta.prop = vm.runInContext('{}', contextifiedObject);

Parameters

code

JavaScript Module code to parse