diff --git a/src/bundle.ts b/src/bundle.ts
index 202ba45..63939b1 100644
--- a/src/bundle.ts
+++ b/src/bundle.ts
@@ -3,14 +3,35 @@ import fs from 'fs'
 import { CreateEvaluateOptions, createEvaluateModule } from './module'
 import { createSourceMap } from './source-map'
 
+/**
+ * Represents a collection of file contents where the key is the file name and the value is the file contents.
+ */
 export type Files = { [name: string]: any }
 
+/**
+ * Defines the options required to create a bundle. Inherits from {@link CreateEvaluateOptions}.
+ */
 export type CreateBundleOptions = CreateEvaluateOptions
 
 export type Bundle = {
+  /**
+   * The base directory for the bundle. All file paths are relative to this directory.
+   */
   basedir: string
+
+  /**
+   * The entry point filename of the bundle.
+   */
   entry: string
+
+  /**
+   * A collection of file contents indexed by filename. See {@link files}.
+   */
   files: { [filename: string]: string }
+
+  /**
+   * A collection of source maps indexed by filename.
+   */
   maps: { [filename: string]: string }
 }
 
@@ -68,6 +89,13 @@ function loadBundle (bundle: Partial<Bundle> | string, basedir?: string): Bundle
   return bundle as Bundle
 }
 
+/**
+ * Creates a bundle and prepares it for evaluation by setting up the necessary modules and error trace rewriters.
+ *
+ * @param {_bundle} Partial<Bundle> | string The partial bundle data or a path to the bundle file. See {@link Bundle}.
+ * @param {CreateBundleOptions} [options={}] Configuration options for creating the bundle, defaults to an empty object. See {@link CreateBundleOptions}.
+ * @returns {object} An object containing the fully prepared bundle, the module evaluator, the entry evaluator and the error trace rewriter.
+ */
 export function createBundle (_bundle: Partial<Bundle> | string, options: CreateBundleOptions = {}) {
   const bundle = loadBundle(_bundle, options.basedir)
   const { rewriteErrorTrace } = createSourceMap(bundle.maps)
diff --git a/src/module.ts b/src/module.ts
index c81a976..cbdf721 100644
--- a/src/module.ts
+++ b/src/module.ts
@@ -18,11 +18,26 @@ const _global = {
 }
 
 export interface CreateEvaluateOptions {
+  /**
+   * The base directory from which modules should be resolved.
+   * @optional
+   */
   basedir?: string,
+  /**
+   * Specifies whether the module should be run in a new VM context and whether it should be reused ('once') or not.
+   * @optional
+   */
   runInNewContext?: 'once' | boolean,
+  /**
+   * Options for running scripts within a VM context. See {@link RunningScriptOptions}.
+   * @optional
+   */
   runningScriptOptions?: RunningScriptOptions
 }
 
+/**
+ * Represents a function that evaluates a module with a given filename and context, and returns the result of the evaluation.
+ */
 export type EvaluateModule = (filename: string, context: Object) => any
 
 type Sandbox = typeof _global
@@ -52,6 +67,13 @@ function createModule (options: Partial<NodeJS.Module>): NodeJS.Module {
   }
 }
 
+/**
+ * Constructs a module evaluator function with given file mappings and evaluation options.
+ *
+ * @param {Files} files A mapping of file names to file contents.
+ * @param {CreateEvaluateOptions} options The options used to create the evaluator.
+ * @returns {EvaluateModule} A function capable of evaluating a module from its filename within a given context.
+ */
 export function createEvaluateModule (files: Files, { basedir, runInNewContext, runningScriptOptions }: CreateEvaluateOptions): EvaluateModule {
   const _evalCache: { [key: string]: object } = {}