1.6.1

.gitea/workflows/default_tags.yaml

@@ -119,6 +119,6 @@ jobs:
         run: |
           npmci node install stable
           npmci npm install
-          pnpm install -g @gitzone/tsdoc
+          pnpm install -g @git.zone/tsdoc
           npmci command tsdoc
         continue-on-error: true

changelog.md

@@ -0,0 +1,87 @@
+# Changelog
+
+## 2025-03-04 - 1.6.1 - fix(build)
+Corrected package.json and workflow dependencies and resolved formatting issues in tests.
+
+- Fixed incorrect global npm package reference for tsdoc installation in workflow file.
+- Updated dependencies in package.json for consistency in package naming.
+- Resolved inconsistent formatting and spacing in test files.
+
+## 2025-03-04 - 1.6.0 - feat(assertion)
+Enhanced the assertion error messaging and added new test cases.
+
+- Improved error messages by incorporating path and value/placeholders in assertions.
+- Added detailed testing of new assertion functionalities.
+- Additional test cases for comprehensive coverage of new features.
+
+## 2025-03-04 - 1.5.0 - feat(Assertion)
+Add toBeTypeOf assertion method
+
+- Introduced a new assertion method `toBeTypeOf` allowing checks for expected data types.
+- Updated devDependencies and dependencies to their latest versions.
+
+## 2024-12-30 - 1.4.0 - feat(Assertion)
+Add log method to Assertion class
+
+- Introduced a log method in the Assertion class to output assertion context.
+
+## 2024-12-30 - 1.3.0 - feat(Assertion)
+Refactor Assertion class for better error handling and code clarity
+
+- Improved method runCheck to better handle async and sync execution
+- Enhanced getObjectToTestReference to handle undefined or null values gracefully
+- Refactored error message logic for clarity and added more descriptive fail messages
+- Added arrayItem method for better handling of array index access
+- Improved structure by integrating consistent error handling in assertion methods
+
+## 2024-08-24 - 1.2.1 - fix(Assertion)
+Refactor methods for setting failure and success messages
+
+- Renamed 'withFailMessage' to 'setFailMessage' for better readability and consistency.
+- Renamed 'withSuccessMessage' to 'setSuccessMessage' to align with the naming convention.
+
+## 2024-08-24 - 1.2.0 - feat(assertions)
+Add custom fail and success messages for assertions
+
+- Implemented withFailMessage method in Assertion class to customize fail messages
+- Implemented withSuccessMessage method in Assertion class to customize success messages
+- Enhanced error messages to use custom fail messages when provided
+
+## 2024-08-17 - 1.1.0 - feat(assertion)
+Add toBeDefined assertion method
+
+- Added the toBeDefined method to the Assertion class for checking if an object is defined
+
+## 2024-05-29 - 1.0.21 - General Updates
+General updates and maintenance.
+
+- Updated description
+- Updated tsconfig
+- Updated npmextra.json: githost
+
+## 2023-08-12 - 1.0.20 to 1.0.21 - General Fixes
+General fixes and update.
+
+- Fixed core updates (multiple instances)
+- 1.0.21 release
+
+## 2023-07-10 - 1.0.15 - Organization Update
+- Switched to new org scheme
+
+## 2023-06-22 - 1.0.14 to 1.0.19 - General Updates
+General fixes and updates.
+
+- Fixed core updates (multiple instances)
+- 1.0.18 to 1.0.16 releases
+
+## 2022-02-02 - 1.0.8 to 1.0.13 - General Fixes
+General fixes and update.
+
+- Fixed core updates (multiple instances)
+- 1.0.14 release
+
+## 2022-01-20 - 1.0.1 to 1.0.7 - Initial Releases
+Initial core updates and fixes.
+
+- Fixed core updates (multiple instances)
+- 1.0.7 release

npmextra.json

@@ -2,17 +2,32 @@
   "gitzone": {
     "projectType": "npm",
     "module": {
-      "githost": "gitlab.com",
+      "githost": "code.foss.global",
       "gitscope": "push.rocks",
       "gitrepo": "smartexpect",
-      "description": "manage expectations in code",
+      "description": "A testing library to manage expectations in code, offering both synchronous and asynchronous assertion methods.",
       "npmPackagename": "@push.rocks/smartexpect",
       "license": "MIT",
-      "projectDomain": "push.rocks"
+      "projectDomain": "push.rocks",
+      "keywords": [
+        "testing",
+        "assertions",
+        "code quality",
+        "unit testing",
+        "test driven development",
+        "synchronous testing",
+        "asynchronous testing",
+        "expectations",
+        "validation",
+        "development tools"
+      ]
     }
   },
   "npmci": {
     "npmGlobalTools": [],
     "npmAccessLevel": "public"
+  },
+  "tsdoc": {
+    "legal": "\n## License and Legal Information\n\nThis repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the [license](license) file within this repository. \n\n**Please note:** The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.\n\n### Trademarks\n\nThis project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH and are not included within the scope of the MIT license granted herein. Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines, and any usage must be approved in writing by Task Venture Capital GmbH.\n\n### Company Information\n\nTask Venture Capital GmbH  \nRegistered at District court Bremen HRB 35230 HB, Germany\n\nFor any legal inquiries or if you require further information, please contact us via email at hello@task.vc.\n\nBy using this repository, you acknowledge that you have read this section, agree to comply with its terms, and understand that the licensing of the code does not imply endorsement by Task Venture Capital GmbH of any derivative works.\n"
   }
 }

package.json

@@ -1,8 +1,8 @@
 {
   "name": "@push.rocks/smartexpect",
-  "version": "1.0.21",
+  "version": "1.6.1",
   "private": false,
-  "description": "manage expectations in code",
+  "description": "A testing library to manage expectations in code, offering both synchronous and asynchronous assertion methods.",
   "main": "dist_ts/index.js",
   "typings": "dist_ts/index.d.ts",
   "type": "module",
@@ -10,20 +10,20 @@
   "license": "MIT",
   "scripts": {
     "test": "(tstest test/ --web)",
-    "build": "(tsbuild --web)",
+    "build": "(tsbuild tsfolders)",
     "buildDocs": "tsdoc"
   },
   "devDependencies": {
-    "@gitzone/tsbuild": "^2.1.66",
+    "@git.zone/tsbuild": "^2.2.1",
-    "@gitzone/tsbundle": "^2.0.8",
+    "@git.zone/tsbundle": "^2.2.5",
-    "@gitzone/tsrun": "^1.2.44",
+    "@git.zone/tsrun": "^1.3.3",
-    "@gitzone/tstest": "^1.0.77",
+    "@git.zone/tstest": "^1.0.96",
-    "@push.rocks/tapbundle": "^5.0.12",
+    "@push.rocks/tapbundle": "^5.5.6",
-    "@types/node": "^20.4.10"
+    "@types/node": "^22.13.9"
   },
   "dependencies": {
     "@push.rocks/smartdelay": "^3.0.5",
-    "@push.rocks/smartpromise": "^4.0.2",
+    "@push.rocks/smartpromise": "^4.2.3",
     "fast-deep-equal": "^3.1.3"
   },
   "browserslist": [
@@ -40,5 +40,27 @@
     "cli.js",
     "npmextra.json",
     "readme.md"
-  ]
+  ],
+  "keywords": [
+    "testing",
+    "assertions",
+    "code quality",
+    "unit testing",
+    "test driven development",
+    "synchronous testing",
+    "asynchronous testing",
+    "expectations",
+    "validation",
+    "development tools"
+  ],
+  "homepage": "https://code.foss.global/push.rocks/smartexpect",
+  "repository": {
+    "type": "git",
+    "url": "https://code.foss.global/push.rocks/smartexpect.git"
+  },
+  "pnpm": {
+    "onlyBuiltDependencies": [
+      "mongodb-memory-server"
+    ]
+  }
 }

readme.hints.md

@@ -0,0 +1 @@
+ 

readme.md

@@ -1,37 +1,262 @@
 # @push.rocks/smartexpect
-manage expectations in code
+Manage expectations in code with precise, readable assertions
 
-## Availabililty and Links
+## Install
-* [npmjs.org (npm package)](https://www.npmjs.com/package/@push.rocks/smartexpect)
-* [gitlab.com (source)](https://gitlab.com/push.rocks/smartexpect)
-* [github.com (source mirror)](https://github.com/push.rocks/smartexpect)
-* [docs (typedoc)](https://push.rocks.gitlab.io/smartexpect/)
 
-## Status for master
+To install `@push.rocks/smartexpect`, use the following command in your terminal:
 
-Status Category | Status Badge
+```bash
--- | --
+npm install @push.rocks/smartexpect --save
-GitLab Pipelines | [![pipeline status](https://gitlab.com/push.rocks/smartexpect/badges/master/pipeline.svg)](https://lossless.cloud)
+```
-GitLab Pipline Test Coverage | [![coverage report](https://gitlab.com/push.rocks/smartexpect/badges/master/coverage.svg)](https://lossless.cloud)
+
-npm | [![npm downloads per month](https://badgen.net/npm/dy/@push.rocks/smartexpect)](https://lossless.cloud)
+This will add `@push.rocks/smartexpect` to your project's dependencies. Make sure you're inside your project directory before running this command.
-Snyk | [![Known Vulnerabilities](https://badgen.net/snyk/push.rocks/smartexpect)](https://lossless.cloud)
-TypeScript Support | [![TypeScript](https://badgen.net/badge/TypeScript/>=%203.x/blue?icon=typescript)](https://lossless.cloud)
-node Support | [![node](https://img.shields.io/badge/node->=%2010.x.x-blue.svg)](https://nodejs.org/dist/latest-v10.x/docs/api/)
-Code Style | [![Code Style](https://badgen.net/badge/style/prettier/purple)](https://lossless.cloud)
-PackagePhobia (total standalone install weight) | [![PackagePhobia](https://badgen.net/packagephobia/install/@push.rocks/smartexpect)](https://lossless.cloud)
-PackagePhobia (package size on registry) | [![PackagePhobia](https://badgen.net/packagephobia/publish/@push.rocks/smartexpect)](https://lossless.cloud)
-BundlePhobia (total size when bundled) | [![BundlePhobia](https://badgen.net/bundlephobia/minzip/@push.rocks/smartexpect)](https://lossless.cloud)
 
 ## Usage
 
-Use TypeScript for best in class intellisense
+`@push.rocks/smartexpect` is a TypeScript library designed to manage expectations in your code effectively, improving testing readability and maintainability. Below are various scenarios showcasing how to use this library effectively across both synchronous and asynchronous code paths.
 
-## Contribution
+### Getting Started
 
-We are always happy for code contributions. If you are not the code contributing type that is ok. Still, maintaining Open Source repositories takes considerable time and thought. If you like the quality of what we do and our modules are useful to you we would appreciate a little monthly contribution: You can [contribute one time](https://lossless.link/contribute-onetime) or [contribute monthly](https://lossless.link/contribute). :)
+First, import `@push.rocks/smartexpect` into your TypeScript file:
 
-For further information read the linked docs at the top of this readme.
+```typescript
+import { expect, expectAsync } from '@push.rocks/smartexpect';
+```
 
-## Legal
+### Synchronous Expectations
-> MIT licensed | **©** [Task Venture Capital GmbH](https://task.vc)
+
-| By using this npm module you agree to our [privacy policy](https://lossless.gmbH/privacy)
+You can employ `expect` to create synchronous assertions:
+
+```typescript
+import { expect } from '@push.rocks/smartexpect';
+
+// Type assertions
+expect('hello').toBeTypeofString();
+expect(42).toBeTypeofNumber();
+expect(true).toBeTypeofBoolean();
+expect(() => {}).toBeTypeOf('function');
+expect({}).toBeTypeOf('object');
+
+// Negated assertions
+expect(1).not.toBeTypeofString();
+expect('string').not.toBeTypeofNumber();
+
+// Equality assertion
+expect('hithere').toEqual('hithere');
+
+// Deep equality assertion
+expect({ key: 'value' }).toEqual({ key: 'value' });
+
+// Regular expression matching
+expect('hithere').toMatch(/hi/);
+```
+
+### Asynchronous Expectations
+
+For asynchronous operations, use `expectAsync` to return a promise:
+
+```typescript
+import { expectAsync } from '@push.rocks/smartexpect';
+
+const asyncStringFetcher = async (): Promise<string> => {
+  return 'async string';
+};
+
+const asyncTest = async () => {
+  // Add a timeout to prevent hanging tests
+  await expectAsync(asyncStringFetcher()).timeout(5000).toBeTypeofString();
+  await expectAsync(asyncStringFetcher()).toEqual('async string');
+};
+
+asyncTest();
+```
+
+### Navigating Complex Objects
+
+You can navigate complex objects using the `property()` and `arrayItem()` methods:
+
+```typescript
+const complexObject = {
+  users: [
+    { id: 1, name: 'Alice', permissions: { admin: true } },
+    { id: 2, name: 'Bob', permissions: { admin: false } }
+  ]
+};
+
+// Navigate to a nested property
+expect(complexObject)
+  .property('users')
+  .arrayItem(0)
+  .property('name')
+  .toEqual('Alice');
+
+// Check nested permission
+expect(complexObject)
+  .property('users')
+  .arrayItem(0)
+  .property('permissions')
+  .property('admin')
+  .toBeTrue();
+```
+
+### Advanced Assertions
+
+#### Properties and Deep Properties
+
+Assert the existence of properties and their values:
+
+```typescript
+const testObject = { level1: { level2: 'value' } };
+
+// Property existence
+expect(testObject).toHaveProperty('level1');
+
+// Property with specific value
+expect(testObject).toHaveProperty('level1.level2', 'value');
+
+// Deep Property existence
+expect(testObject).toHaveDeepProperty(['level1', 'level2']);
+```
+
+#### Conditions and Comparisons
+
+Perform more intricate assertions:
+
+```typescript
+// Numeric comparisons
+expect(5).toBeGreaterThan(3);
+expect(3).toBeLessThan(5);
+expect(5).toBeGreaterThanOrEqual(5);
+expect(5).toBeLessThanOrEqual(5);
+expect(0.1 + 0.2).toBeCloseTo(0.3, 10); // Floating point comparison with precision
+
+// Truthiness checks
+expect(true).toBeTrue();
+expect(false).toBeFalse();
+expect('non-empty').toBeTruthy();
+expect(0).toBeFalsy();
+
+// Null/Undefined checks
+expect(null).toBeNull();
+expect(undefined).toBeUndefined();
+expect(null).toBeNullOrUndefined();
+
+// Custom conditions
+expect(7).customAssertion(value => value % 2 === 1, 'Value is not odd');
+```
+
+#### Arrays and Collections
+
+Work seamlessly with arrays and collections:
+
+```typescript
+const testArray = [1, 2, 3];
+
+// Array checks
+expect(testArray).toBeArray();
+expect(testArray).toHaveLength(3);
+expect(testArray).toContain(2);
+expect(testArray).toContainAll([1, 3]);
+expect(testArray).toExclude(4);
+expect([]).toBeEmptyArray();
+expect(testArray).toHaveLengthGreaterThan(2);
+expect(testArray).toHaveLengthLessThan(4);
+
+// Deep equality in arrays
+expect([{ id: 1 }, { id: 2 }]).toContainEqual({ id: 1 });
+```
+
+#### Strings
+
+String-specific checks:
+
+```typescript
+expect('hello world').toStartWith('hello');
+expect('hello world').toEndWith('world');
+expect('hello world').toInclude('lo wo');
+expect('options').toBeOneOf(['choices', 'options', 'alternatives']);
+```
+
+#### Functions and Exceptions
+
+Test function behavior and exceptions:
+
+```typescript
+const throwingFn = () => { throw new Error('test error'); };
+expect(throwingFn).toThrow();
+expect(throwingFn).toThrow(Error);
+
+const safeFn = () => 'result';
+expect(safeFn).not.toThrow();
+```
+
+#### Date Assertions
+
+Work with dates:
+
+```typescript
+const now = new Date();
+const past = new Date(Date.now() - 10000);
+const future = new Date(Date.now() + 10000);
+
+expect(now).toBeDate();
+expect(now).toBeAfterDate(past);
+expect(now).toBeBeforeDate(future);
+```
+
+### Debugging Assertions
+
+The `log()` method is useful for debugging complex assertions:
+
+```typescript
+expect(complexObject)
+  .property('users')
+  .log() // Logs the current value in the assertion chain
+  .arrayItem(0)
+  .log() // Logs the first user
+  .property('permissions')
+  .log() // Logs the permissions object
+  .property('admin')
+  .toBeTrue();
+```
+
+### Customizing Error Messages
+
+You can provide custom error messages for more meaningful test failures:
+
+```typescript
+expect(user.age)
+  .setFailMessage('User age must be at least 18 for adult content')
+  .toBeGreaterThanOrEqual(18);
+```
+
+## Best Practices
+
+- **Human-readable assertions**: The fluent API is designed to create tests that read like natural language sentences.
+
+- **Precise error messages**: When tests fail, the error messages provide detailed information about what went wrong, including expected vs. actual values.
+
+- **Property path navigation**: Use the property path methods to navigate complex objects without creating temporary variables.
+
+- **Comprehensive testing**: Take advantage of the wide range of assertion methods to test various aspects of your code.
+
+- **Debugging with log()**: Use the `log()` method to see intermediate values in the assertion chain during test development.
+
+## License and Legal Information
+
+This repository contains open-source code that is licensed under the MIT License. A copy of the MIT License can be found in the [license](license) file within this repository. 
+
+**Please note:** The MIT License does not grant permission to use the trade names, trademarks, service marks, or product names of the project, except as required for reasonable and customary use in describing the origin of the work and reproducing the content of the NOTICE file.
+
+### Trademarks
+
+This project is owned and maintained by Task Venture Capital GmbH. The names and logos associated with Task Venture Capital GmbH and any related products or services are trademarks of Task Venture Capital GmbH and are not included within the scope of the MIT license granted herein. Use of these trademarks must comply with Task Venture Capital GmbH's Trademark Guidelines, and any usage must be approved in writing by Task Venture Capital GmbH.
+
+### Company Information
+
+Task Venture Capital GmbH  
+Registered at District court Bremen HRB 35230 HB, Germany
+
+For any legal inquiries or if you require further information, please contact us via email at hello@task.vc.
+
+By using this repository, you acknowledge that you have read this section, agree to comply with its terms, and understand that the licensing of the code does not imply endorsement by Task Venture Capital GmbH of any derivative works.

test/test.both.ts

@@ -0,0 +1,218 @@
+import { tap } from '@push.rocks/tapbundle';
+import * as smartexpect from '../ts/index.js';
+
+tap.test('basic type assertions', async () => {
+  // String type checks
+  smartexpect.expect('hello').toBeTypeofString();
+  smartexpect.expect(1).not.toBeTypeofString();
+
+  // Boolean type checks
+  smartexpect.expect(true).toBeTypeofBoolean();
+  smartexpect.expect(false).toBeTypeofBoolean();
+  smartexpect.expect(1).not.toBeTypeofBoolean();
+
+  // Number type checks
+  smartexpect.expect(42).toBeTypeofNumber();
+  smartexpect.expect(true).not.toBeTypeofNumber();
+
+  // Generic type checks with new method
+  smartexpect.expect(() => {}).toBeTypeOf('function');
+  smartexpect.expect(class Test {}).toBeTypeOf('function');
+  smartexpect.expect({}).toBeTypeOf('object');
+  smartexpect.expect(Symbol('test')).toBeTypeOf('symbol');
+});
+
+tap.test('async tests', async (toolsArg) => {
+  const deferred = toolsArg.defer();
+  toolsArg.delayFor(1000).then(() => {
+    deferred.resolve('hello');
+  });
+  await smartexpect.expectAsync(deferred.promise).timeout(2000).toBeTypeofString();
+  await smartexpect.expectAsync(deferred.promise).not.toBeTypeofBoolean();
+
+  // Test async timeout handling
+  const longOperation = toolsArg.defer();
+  toolsArg.delayFor(3000).then(() => {
+    longOperation.resolve('completed');
+  });
+  try {
+    await smartexpect.expectAsync(longOperation.promise).timeout(1000).toBeDefined();
+    throw new Error('Should have timed out');
+  } catch (err) {
+    // Expected timeout error
+    console.log('Successfully caught timeout:', err.message);
+  }
+});
+
+tap.test('equality and matching assertions', async () => {
+  // Basic equality
+  smartexpect.expect('hithere').toEqual('hithere');
+  smartexpect.expect('hithere').not.toEqual('hithere2');
+
+  // Object equality
+  const obj1 = { a: 1, b: { c: true } };
+  const obj2 = { a: 1, b: { c: true } };
+  const obj3 = { a: 1, b: { c: false } };
+  smartexpect.expect(obj1).toEqual(obj2);
+  smartexpect.expect(obj1).not.toEqual(obj3);
+
+  // RegExp matching
+  smartexpect.expect('hithere').toMatch(/hi/);
+  smartexpect.expect('hithere').toMatch(/^hithere$/);
+  smartexpect.expect('hithere').not.toMatch(/ho/);
+
+  // String inclusion
+  smartexpect.expect('hithere').toInclude('hit');
+  smartexpect.expect('hithere').not.toInclude('missing');
+
+  // String start/end
+  smartexpect.expect('hithere').toStartWith('hi');
+  smartexpect.expect('hithere').toEndWith('ere');
+});
+
+tap.test('object property assertions', async () => {
+  const testObject = {
+    topLevel: 'hello',
+    nested: {
+      prop: 42,
+      deeplyNested: {
+        array: [1, 2, 3],
+      },
+    },
+  };
+
+  // Basic property checks
+  smartexpect.expect(testObject).toHaveProperty('topLevel');
+  smartexpect.expect(testObject).toHaveProperty('topLevel', 'hello');
+  smartexpect.expect(testObject).not.toHaveProperty('missing');
+
+  // Drill-down property navigation
+  smartexpect.expect(testObject).property('nested').toHaveProperty('prop', 42);
+  smartexpect
+    .expect(testObject)
+    .property('nested')
+    .property('deeplyNested')
+    .property('array')
+    .toBeArray();
+
+  // Deep property checks
+  smartexpect.expect(testObject).toHaveDeepProperty(['nested', 'deeplyNested', 'array']);
+
+  // Array item navigation
+  smartexpect
+    .expect(testObject)
+    .property('nested')
+    .property('deeplyNested')
+    .property('array')
+    .arrayItem(0)
+    .toEqual(1);
+});
+
+tap.test('numeric comparison assertions', async () => {
+  // Greater/less than
+  smartexpect.expect(4).toBeGreaterThan(3);
+  smartexpect.expect(4).toBeLessThan(5);
+  smartexpect.expect(4).toBeGreaterThanOrEqual(4);
+  smartexpect.expect(4).toBeLessThanOrEqual(4);
+
+  // Approximate equality
+  smartexpect.expect(0.1 + 0.2).toBeCloseTo(0.3, 10);
+});
+
+tap.test('array assertions', async () => {
+  const obj1 = { id: 1 };
+  const obj2 = { id: 2 };
+  const testArray = [1, 'two', obj1, true];
+
+  // Basic array checks
+  smartexpect.expect(testArray).toBeArray();
+  smartexpect.expect(testArray).toHaveLength(4);
+
+  // Content checks
+  smartexpect.expect(testArray).toContain('two');
+  smartexpect.expect(testArray).toContain(obj1);
+  smartexpect.expect(testArray).not.toContain(obj2);
+
+  // Array with equal items (not same reference)
+  smartexpect.expect([{ a: 1 }, { b: 2 }]).toContainEqual({ a: 1 });
+
+  // Multiple values
+  smartexpect.expect(testArray).toContainAll([1, 'two']);
+  smartexpect.expect(testArray).toExclude('missing');
+
+  // Empty array
+  smartexpect.expect([]).toBeEmptyArray();
+
+  // Length comparisons
+  smartexpect.expect(testArray).toHaveLengthGreaterThan(3);
+  smartexpect.expect(testArray).toHaveLengthLessThan(5);
+});
+
+tap.test('boolean assertions', async () => {
+  // True/False
+  smartexpect.expect(true).toBeTrue();
+  smartexpect.expect(false).toBeFalse();
+
+  // Truthy/Falsy
+  smartexpect.expect('something').toBeTruthy();
+  smartexpect.expect(0).toBeFalsy();
+
+  // Null/Undefined
+  smartexpect.expect(null).toBeNull();
+  smartexpect.expect(undefined).toBeUndefined();
+  smartexpect.expect(null).toBeNullOrUndefined();
+  smartexpect.expect(undefined).toBeNullOrUndefined();
+});
+
+tap.test('function assertions', async () => {
+  // Function that throws
+  const throwingFn = () => {
+    throw new Error('test error');
+  };
+  smartexpect.expect(throwingFn).toThrow();
+  smartexpect.expect(throwingFn).toThrow(Error);
+
+  // Function that doesn't throw
+  const nonThrowingFn = () => 'safe';
+  smartexpect.expect(nonThrowingFn).not.toThrow();
+});
+
+tap.test('date assertions', async () => {
+  const now = new Date();
+  const past = new Date(Date.now() - 10000);
+  const future = new Date(Date.now() + 10000);
+
+  smartexpect.expect(now).toBeDate();
+  smartexpect.expect(now).toBeAfterDate(past);
+  smartexpect.expect(now).toBeBeforeDate(future);
+});
+
+tap.test('custom assertions', async () => {
+  // Custom validation logic
+  smartexpect.expect(42).customAssertion((value) => value % 2 === 0, 'Expected number to be even');
+
+  // With fail message
+  smartexpect.expect('test').setFailMessage('Custom fail message for assertion').toHaveLength(4);
+});
+
+tap.test('logging and debugging', async () => {
+  // Using log() for debugging
+  const complexObject = {
+    level1: {
+      level2: {
+        value: 'nested value',
+      },
+    },
+  };
+
+  // This logs the current value in the chain for debugging
+  smartexpect
+    .expect(complexObject)
+    .property('level1')
+    .property('level2')
+    .log()
+    .property('value')
+    .toEqual('nested value');
+});
+
+export default tap.start();

test/test.ts

@@ -1,52 +0,0 @@
-import { tap } from '@push.rocks/tapbundle';
-import * as smartexpect from '../ts/index.js';
-
-tap.test('sync tests', async () => {
-  smartexpect.expect('hello').toBeTypeofString();
-  smartexpect.expect(1).not.toBeTypeofString();
-  smartexpect.expect(true).toBeTypeofBoolean();
-  smartexpect.expect(true).not.toBeTypeofNumber();
-});
-
-tap.test('async tests', async (toolsArg) => {
-  const deferred = toolsArg.defer();
-  toolsArg.delayFor(4000).then(() => {
-    deferred.resolve('hello');
-  });
-  await smartexpect.expectAsync(deferred.promise).timeout(5000).toBeTypeofString();
-  await smartexpect.expectAsync(deferred.promise).not.toBeTypeofBoolean();
-});
-
-tap.test('should check equality', async () => {
-  smartexpect.expect('hithere').toEqual('hithere');
-  smartexpect.expect('hithere').not.toEqual('hithere2');
-});
-
-tap.test('should check for regexp matching', async () => {
-  smartexpect.expect('hithere').toMatch(/hi/);
-  smartexpect.expect('hithere').not.toMatch(/ho/);
-});
-
-tap.test('should correctly state property presence', async () => {
-  const testObject = {
-    aprop: 'hello',
-  };
-
-  smartexpect.expect(testObject).toHaveProperty('aprop');
-  smartexpect.expect(testObject).not.toHaveProperty('aprop2');
-});
-
-tap.test('should be greater than', async () => {
-  smartexpect.expect(4).toBeGreaterThan(3);
-  smartexpect.expect(4).toBeLessThan(5);
-});
-
-tap.test('should correctly determine toContain', async () => {
-  const hello = {
-    socool: 'yes',
-  };
-  const testArray = [hello];
-  smartexpect.expect(testArray).toContain(hello);
-});
-
-tap.start();

ts/00_commitinfo_data.ts

@@ -1,8 +1,8 @@
 /**
- * autocreated commitinfo by @pushrocks/commitinfo
+ * autocreated commitinfo by @push.rocks/commitinfo
  */
 export const commitinfo = {
   name: '@push.rocks/smartexpect',
-  version: '1.0.21',
+  version: '1.6.1',
-  description: 'manage expectations in code'
+  description: 'A testing library to manage expectations in code, offering both synchronous and asynchronous assertion methods.'
 }

ts/index.ts

@@ -1,5 +1,3 @@
-import * as plugins from './smartexpect.plugins.js';
-
 import { Assertion } from './smartexpect.classes.assertion.js';
 
 export const expect = (baseArg: any) => {
@@ -11,3 +9,4 @@ export const expectAsync = (baseArg: any) => {
   const assertion = new Assertion(baseArg, 'async');
   return assertion;
 };
+

ts/smartexpect.classes.assertion.ts

@@ -5,9 +5,13 @@ export type TExecutionType = 'sync' | 'async';
 export class Assertion {
   executionMode: TExecutionType;
   baseReference: any;
-  propertyDrillDown: string[] = [];
+  propertyDrillDown: Array<string | number> = [];
+
   private notSetting = false;
   private timeoutSetting = 0;
+  private failMessage: string;
+  private successMessage: string;
+
   constructor(baseReferenceArg: any, executionModeArg: TExecutionType) {
     this.baseReference = baseReferenceArg;
     this.executionMode = executionModeArg;
@@ -16,11 +20,70 @@ export class Assertion {
   private getObjectToTestReference() {
     let returnObjectToTestReference = this.baseReference;
     for (const property of this.propertyDrillDown) {
+      if (returnObjectToTestReference == null) {
+        // if it's null or undefined, stop
+        break;
+      }
+
+      // We just directly access with bracket notation.
+      // If property is a string, it's like obj["someProp"];
+      // If property is a number, it's like obj[0].
       returnObjectToTestReference = returnObjectToTestReference[property];
     }
     return returnObjectToTestReference;
   }
 
+  private formatDrillDown(): string {
+    if (!this.propertyDrillDown || this.propertyDrillDown.length === 0) {
+      return '';
+    }
+    
+    const path = this.propertyDrillDown.map(prop => {
+      if (typeof prop === 'number') {
+        return `[${prop}]`;
+      } else {
+        return `.${prop}`;
+      }
+    }).join('');
+    
+    return path;
+  }
+  
+  private formatValue(value: any): string {
+    if (value === null) {
+      return 'null';
+    } else if (value === undefined) {
+      return 'undefined';
+    } else if (typeof value === 'object') {
+      try {
+        return JSON.stringify(value);
+      } catch (e) {
+        return `[Object ${value.constructor.name}]`;
+      }
+    } else if (typeof value === 'function') {
+      return `[Function${value.name ? ': ' + value.name : ''}]`;
+    } else if (typeof value === 'string') {
+      return `"${value}"`;
+    } else {
+      return String(value);
+    }
+  }
+
+  private createErrorMessage(message: string): string {
+    if (this.failMessage) {
+      return this.failMessage;
+    }
+    
+    const testValue = this.getObjectToTestReference();
+    const formattedValue = this.formatValue(testValue);
+    const drillDown = this.formatDrillDown();
+    
+    // Replace placeholders in the message
+    return message
+      .replace('{value}', formattedValue)
+      .replace('{path}', drillDown || '');
+  }
+
   public get not() {
     this.notSetting = true;
     return this;
@@ -31,6 +94,16 @@ export class Assertion {
     return this;
   }
 
+  public setFailMessage(failMessageArg: string) {
+    this.failMessage = failMessageArg;
+    return this;
+  }
+
+  public setSuccessMessage(successMessageArg: string) {
+    this.successMessage = successMessageArg;
+    return this;
+  }
+
   private runCheck(checkFunction: () => any) {
     const runDirectOrNegated = (checkFunction: () => any) => {
       if (!this.notSetting) {
@@ -43,7 +116,7 @@ export class Assertion {
           isOk = true;
         }
         if (!isOk) {
-          throw new Error('Negated assertion is not ok!');
+          throw new Error(this.failMessage || 'Negated assertion failed');
         }
       }
     };
@@ -51,16 +124,16 @@ export class Assertion {
     if (this.executionMode === 'async') {
       const done = plugins.smartpromise.defer();
       if (!(this.baseReference instanceof Promise)) {
-        done.reject(new Error(`${this.baseReference} is not of type promise.`));
+        done.reject(new Error(`Expected a Promise but received: ${this.formatValue(this.baseReference)}`));
       } else {
         if (this.timeoutSetting) {
           plugins.smartdelay.delayFor(this.timeoutSetting).then(() => {
             if (done.status === 'pending') {
-              done.reject(new Error(`${this.baseReference} timed out at ${this.timeoutSetting}!`));
+              done.reject(new Error(`Promise timed out after ${this.timeoutSetting}ms`));
             }
           });
         }
-        this.baseReference.then((promiseResultArg) => {
+        this.baseReference.then((promiseResultArg: any) => {
           this.baseReference = promiseResultArg;
           done.resolve(runDirectOrNegated(checkFunction));
         });
@@ -71,13 +144,22 @@ export class Assertion {
     }
   }
 
+  public toBeDefined() {
+    return this.runCheck(() => {
+      if (this.getObjectToTestReference() === undefined) {
+        throw new Error(
+          this.createErrorMessage('Expected value{path} to be defined, but got undefined')
+        );
+      }
+    });
+  }
+
   public toBeTypeofString() {
     return this.runCheck(() => {
-      if (typeof this.getObjectToTestReference() !== 'string') {
+      const value = this.getObjectToTestReference();
+      if (typeof value !== 'string') {
         throw new Error(
-          `Assertion failed: ${this.baseReference} with drill down ${
+          this.createErrorMessage(`Expected value{path} to be of type string, but got ${typeof value}`)
-            this.propertyDrillDown
-          } is not of type string, but typeof ${typeof this.baseReference}`
         );
       }
     });
@@ -85,11 +167,10 @@ export class Assertion {
 
   public toBeTypeofNumber() {
     return this.runCheck(() => {
-      if (typeof this.getObjectToTestReference() !== 'number') {
+      const value = this.getObjectToTestReference();
+      if (typeof value !== 'number') {
         throw new Error(
-          `Assertion failed: ${this.baseReference} with drill down ${
+          this.createErrorMessage(`Expected value{path} to be of type number, but got ${typeof value}`)
-            this.propertyDrillDown
-          } is not of type string, but typeof ${typeof this.baseReference}`
         );
       }
     });
@@ -97,11 +178,22 @@ export class Assertion {
 
   public toBeTypeofBoolean() {
     return this.runCheck(() => {
-      if (typeof this.getObjectToTestReference() !== 'boolean') {
+      const value = this.getObjectToTestReference();
+      if (typeof value !== 'boolean') {
         throw new Error(
-          `Assertion failed: ${this.baseReference} with drill down ${
+          this.createErrorMessage(`Expected value{path} to be of type boolean, but got ${typeof value}`)
-            this.propertyDrillDown
+        );
-          } is not of type string, but typeof ${typeof this.baseReference}`
+      }
+    });
+  }
+
+  public toBeTypeOf(expectedType: string) {
+    return this.runCheck(() => {
+      const value = this.getObjectToTestReference();
+      const actualType = typeof value;
+      if (actualType !== expectedType) {
+        throw new Error(
+          this.createErrorMessage(`Expected value{path} to be of type ${expectedType}, but got ${actualType}`)
         );
       }
     });
@@ -109,10 +201,11 @@ export class Assertion {
 
   public toEqual(comparisonObject: any) {
     return this.runCheck(() => {
-      const result = plugins.fastDeepEqual(this.getObjectToTestReference(), comparisonObject);
+      const value = this.getObjectToTestReference();
+      const result = plugins.fastDeepEqual(value, comparisonObject);
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} does not equal ${comparisonObject}`
+          this.createErrorMessage(`Expected value{path} to equal ${this.formatValue(comparisonObject)}`)
         );
       }
     });
@@ -120,10 +213,11 @@ export class Assertion {
 
   public toMatch(comparisonObject: RegExp) {
     return this.runCheck(() => {
-      const result = comparisonObject.test(this.getObjectToTestReference());
+      const value = this.getObjectToTestReference();
+      const result = comparisonObject.test(value);
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} does not equal ${comparisonObject}`
+          this.createErrorMessage(`Expected value{path} to match regex ${comparisonObject}`)
         );
       }
     });
@@ -131,12 +225,11 @@ export class Assertion {
 
   public toBeTrue() {
     return this.runCheck(() => {
-      const result =
+      const value = this.getObjectToTestReference();
-        typeof this.getObjectToTestReference() === 'boolean' &&
+      const result = typeof value === 'boolean' && value === true;
-        this.getObjectToTestReference() === true;
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not true or not of type boolean`
+          this.createErrorMessage(`Expected value{path} to be true, but got ${this.formatValue(value)}`)
         );
       }
     });
@@ -144,12 +237,11 @@ export class Assertion {
 
   public toBeFalse() {
     return this.runCheck(() => {
-      const result =
+      const value = this.getObjectToTestReference();
-        typeof this.getObjectToTestReference() === 'boolean' &&
+      const result = typeof value === 'boolean' && value === false;
-        this.getObjectToTestReference() === false;
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not false or not of type boolean`
+          this.createErrorMessage(`Expected value{path} to be false, but got ${this.formatValue(value)}`)
         );
       }
     });
@@ -157,10 +249,11 @@ export class Assertion {
 
   public toBeInstanceOf(classArg: any) {
     return this.runCheck(() => {
-      const result = this.getObjectToTestReference() instanceof classArg;
+      const value = this.getObjectToTestReference();
+      const result = value instanceof classArg;
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not an instance of ${classArg}`
+          this.createErrorMessage(`Expected value{path} to be an instance of ${classArg.name || 'provided class'}`)
         );
       }
     });
@@ -168,16 +261,18 @@ export class Assertion {
 
   public toHaveProperty(propertyArg: string, equalsArg?: any) {
     return this.runCheck(() => {
-      const result = !!this.getObjectToTestReference()[propertyArg];
+      const obj = this.getObjectToTestReference();
-      if (!result) {
+      if (!obj || !(propertyArg in obj)) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} does not have property ${propertyArg}`
+          this.createErrorMessage(`Expected value{path} to have property '${propertyArg}'`)
         );
       }
-      if (equalsArg) {
+      if (equalsArg !== undefined) {
-        if (result !== equalsArg) {
+        if (obj[propertyArg] !== equalsArg) {
           throw new Error(
-            `${this.baseReference} with drill down ${this.propertyDrillDown} does have property ${propertyArg}, but it does not equal ${equalsArg}`
+            this.createErrorMessage(
+              `Expected property '${propertyArg}' of value{path} to equal ${this.formatValue(equalsArg)}, but got ${this.formatValue(obj[propertyArg])}`
+            )
           );
         }
       }
@@ -197,7 +292,9 @@ export class Assertion {
         }
 
         if (!obj || !(property in obj)) {
-          throw new Error(`Missing property at path "${currentPath}" in ${this.baseReference}`);
+          throw new Error(
+            this.createErrorMessage(`Expected value{path} to have property at path '${currentPath}'`)
+          );
         }
         obj = obj[property];
       }
@@ -206,10 +303,11 @@ export class Assertion {
 
   public toBeGreaterThan(numberArg: number) {
     return this.runCheck(() => {
-      const result = this.getObjectToTestReference() > numberArg;
+      const value = this.getObjectToTestReference();
+      const result = value > numberArg;
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not greater than ${numberArg}`
+          this.createErrorMessage(`Expected value{path} to be greater than ${numberArg}, but got ${this.formatValue(value)}`)
         );
       }
     });
@@ -217,10 +315,11 @@ export class Assertion {
 
   public toBeLessThan(numberArg: number) {
     return this.runCheck(() => {
-      const result = this.getObjectToTestReference() < numberArg;
+      const value = this.getObjectToTestReference();
+      const result = value < numberArg;
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not less than ${numberArg}`
+          this.createErrorMessage(`Expected value{path} to be less than ${numberArg}, but got ${this.formatValue(value)}`)
         );
       }
     });
@@ -228,10 +327,11 @@ export class Assertion {
 
   public toBeNull() {
     return this.runCheck(() => {
-      const result = this.getObjectToTestReference() === null;
+      const value = this.getObjectToTestReference();
+      const result = value === null;
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not null`
+          this.createErrorMessage(`Expected value{path} to be null, but got ${this.formatValue(value)}`)
         );
       }
     });
@@ -239,10 +339,11 @@ export class Assertion {
 
   public toBeUndefined() {
     return this.runCheck(() => {
-      const result = this.getObjectToTestReference() === undefined;
+      const value = this.getObjectToTestReference();
+      const result = value === undefined;
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not undefined`
+          this.createErrorMessage(`Expected value{path} to be undefined, but got ${this.formatValue(value)}`)
         );
       }
     });
@@ -250,26 +351,25 @@ export class Assertion {
 
   public toBeNullOrUndefined() {
     return this.runCheck(() => {
-      const result =
+      const value = this.getObjectToTestReference();
-        this.getObjectToTestReference() === null || this.getObjectToTestReference() === undefined;
+      const result = value === null || value === undefined;
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not null or undefined`
+          this.createErrorMessage(`Expected value{path} to be null or undefined, but got ${this.formatValue(value)}`)
         );
       }
     });
   }
 
-  // Array
+  // Array checks
 
   public toContain(itemArg: any) {
     return this.runCheck(() => {
-      const result =
+      const value = this.getObjectToTestReference();
-        this.getObjectToTestReference() instanceof Array &&
+      const result = Array.isArray(value) && value.includes(itemArg);
-        this.getObjectToTestReference().includes(itemArg);
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not contain ${itemArg}`
+          this.createErrorMessage(`Expected array{path} to contain ${this.formatValue(itemArg)}`)
         );
       }
     });
@@ -277,40 +377,49 @@ export class Assertion {
 
   public toBeEmptyArray() {
     return this.runCheck(() => {
-      const arrayRef = this.getObjectToTestReference();
+      const value = this.getObjectToTestReference();
-      if (!Array.isArray(arrayRef) || arrayRef.length !== 0) {
+      if (!Array.isArray(value)) {
-        throw new Error(`Expected ${this.baseReference} to be an empty array, but it was not.`);
+        throw new Error(
+          this.createErrorMessage(`Expected value{path} to be an array, but got ${typeof value}`)
+        );
+      }
+      if (value.length !== 0) {
+        throw new Error(
+          this.createErrorMessage(`Expected array{path} to be empty, but it has ${value.length} elements`)
+        );
       }
     });
   }
 
   public toContainAll(values: any[]) {
     return this.runCheck(() => {
-      const arrayRef = this.getObjectToTestReference();
+      const arr = this.getObjectToTestReference();
-      if (!Array.isArray(arrayRef)) {
+      if (!Array.isArray(arr)) {
-        throw new Error(`Expected ${this.baseReference} to be an array.`);
+        throw new Error(
+          this.createErrorMessage(`Expected value{path} to be an array, but got ${typeof arr}`)
+        );
       }
-
+      
-      for (const value of values) {
+      const missing = values.filter(v => !arr.includes(v));
-        if (!arrayRef.includes(value)) {
+      if (missing.length > 0) {
-          throw new Error(
+        throw new Error(
-            `Expected ${this.baseReference} to include value "${value}", but it did not.`
+          this.createErrorMessage(`Expected array{path} to contain all values ${this.formatValue(values)}, but missing: ${this.formatValue(missing)}`)
-          );
+        );
-        }
       }
     });
   }
 
   public toExclude(value: any) {
     return this.runCheck(() => {
-      const arrayRef = this.getObjectToTestReference();
+      const arr = this.getObjectToTestReference();
-      if (!Array.isArray(arrayRef)) {
+      if (!Array.isArray(arr)) {
-        throw new Error(`Expected ${this.baseReference} to be an array.`);
-      }
-
-      if (arrayRef.includes(value)) {
         throw new Error(
-          `Expected ${this.baseReference} to exclude value "${value}", but it included it.`
+          this.createErrorMessage(`Expected value{path} to be an array, but got ${typeof arr}`)
+        );
+      }
+      if (arr.includes(value)) {
+        throw new Error(
+          this.createErrorMessage(`Expected array{path} to exclude ${this.formatValue(value)}, but it was found`)
         );
       }
     });
@@ -318,11 +427,11 @@ export class Assertion {
 
   public toStartWith(itemArg: any) {
     return this.runCheck(() => {
-      const testObject = this.getObjectToTestReference();
+      const value = this.getObjectToTestReference();
-      const result = typeof testObject === 'string' && testObject.startsWith(itemArg);
+      const result = typeof value === 'string' && value.startsWith(itemArg);
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not contain ${itemArg}`
+          this.createErrorMessage(`Expected string{path} to start with "${itemArg}", but got "${value}"`)
         );
       }
     });
@@ -330,24 +439,23 @@ export class Assertion {
 
   public toEndWith(itemArg: any) {
     return this.runCheck(() => {
-      const testObject = this.getObjectToTestReference();
+      const value = this.getObjectToTestReference();
-      const result = typeof testObject === 'string' && testObject.endsWith(itemArg);
+      const result = typeof value === 'string' && value.endsWith(itemArg);
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not contain ${itemArg}`
+          this.createErrorMessage(`Expected string{path} to end with "${itemArg}", but got "${value}"`)
         );
       }
     });
   }
 
-  // ... previous code ...
-
   public toBeOneOf(values: any[]) {
     return this.runCheck(() => {
-      const result = values.includes(this.getObjectToTestReference());
+      const value = this.getObjectToTestReference();
+      const result = values.includes(value);
       if (!result) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not one of ${values}`
+          this.createErrorMessage(`Expected value{path} to be one of ${this.formatValue(values)}, but got ${this.formatValue(value)}`)
         );
       }
     });
@@ -356,9 +464,14 @@ export class Assertion {
   public toHaveLength(length: number) {
     return this.runCheck(() => {
       const obj = this.getObjectToTestReference();
-      if (typeof obj.length !== 'number' || obj.length !== length) {
+      if (typeof obj.length !== 'number') {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} does not have a length of ${length}`
+          this.createErrorMessage(`Expected value{path} to have a length property, but it doesn't`)
+        );
+      }
+      if (obj.length !== length) {
+        throw new Error(
+          this.createErrorMessage(`Expected value{path} to have length ${length}, but got length ${obj.length}`)
         );
       }
     });
@@ -366,10 +479,12 @@ export class Assertion {
 
   public toBeCloseTo(value: number, precision = 2) {
     return this.runCheck(() => {
-      const difference = Math.abs(this.getObjectToTestReference() - value);
+      const actual = this.getObjectToTestReference();
-      if (difference > Math.pow(10, -precision) / 2) {
+      const difference = Math.abs(actual - value);
+      const epsilon = Math.pow(10, -precision) / 2;
+      if (difference > epsilon) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not close to ${value} up to ${precision} decimal places`
+          this.createErrorMessage(`Expected value{path} to be close to ${value} (within ${epsilon}), but the difference was ${difference}`)
         );
       }
     });
@@ -377,28 +492,42 @@ export class Assertion {
 
   public toThrow(expectedError?: any) {
     return this.runCheck(() => {
+      const fn = this.getObjectToTestReference();
+      if (typeof fn !== 'function') {
+        throw new Error(
+          this.createErrorMessage(`Expected value{path} to be a function, but got ${typeof fn}`)
+        );
+      }
+      
       let thrown = false;
+      let error: any;
+      
       try {
-        this.getObjectToTestReference()();
+        fn();
       } catch (e) {
         thrown = true;
+        error = e;
         if (expectedError && !(e instanceof expectedError)) {
           throw new Error(
-            `Expected function to throw ${expectedError.name}, but it threw ${e.name}`
+            this.createErrorMessage(`Expected function{path} to throw ${expectedError.name}, but it threw ${e.constructor.name}`)
           );
         }
       }
+      
       if (!thrown) {
-        throw new Error(`Expected function to throw, but it didn't.`);
+        throw new Error(
+          this.createErrorMessage(`Expected function{path} to throw, but it didn't throw any error`)
+        );
       }
     });
   }
 
   public toBeTruthy() {
     return this.runCheck(() => {
-      if (!this.getObjectToTestReference()) {
+      const value = this.getObjectToTestReference();
+      if (!value) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not truthy`
+          this.createErrorMessage(`Expected value{path} to be truthy, but got ${this.formatValue(value)}`)
         );
       }
     });
@@ -406,9 +535,10 @@ export class Assertion {
 
   public toBeFalsy() {
     return this.runCheck(() => {
-      if (this.getObjectToTestReference()) {
+      const value = this.getObjectToTestReference();
+      if (value) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not falsy`
+          this.createErrorMessage(`Expected value{path} to be falsy, but got ${this.formatValue(value)}`)
         );
       }
     });
@@ -416,9 +546,10 @@ export class Assertion {
 
   public toBeGreaterThanOrEqual(numberArg: number) {
     return this.runCheck(() => {
-      if (this.getObjectToTestReference() <= numberArg) {
+      const value = this.getObjectToTestReference();
+      if (value < numberArg) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not greater than or equal to ${numberArg}`
+          this.createErrorMessage(`Expected value{path} to be greater than or equal to ${numberArg}, but got ${value}`)
         );
       }
     });
@@ -426,9 +557,10 @@ export class Assertion {
 
   public toBeLessThanOrEqual(numberArg: number) {
     return this.runCheck(() => {
-      if (this.getObjectToTestReference() >= numberArg) {
+      const value = this.getObjectToTestReference();
+      if (value > numberArg) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not less than or equal to ${numberArg}`
+          this.createErrorMessage(`Expected value{path} to be less than or equal to ${numberArg}, but got ${value}`)
         );
       }
     });
@@ -436,10 +568,11 @@ export class Assertion {
 
   public toMatchObject(objectArg: object) {
     return this.runCheck(() => {
-      const partialMatch = plugins.fastDeepEqual(this.getObjectToTestReference(), objectArg); // Note: Implement a deep comparison function or use one from a library
+      const value = this.getObjectToTestReference();
-      if (!partialMatch) {
+      const matchResult = plugins.fastDeepEqual(value, objectArg);
+      if (!matchResult) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} does not match the object ${objectArg}`
+          this.createErrorMessage(`Expected value{path} to match ${this.formatValue(objectArg)}`)
         );
       }
     });
@@ -448,10 +581,16 @@ export class Assertion {
   public toContainEqual(value: any) {
     return this.runCheck(() => {
       const arr = this.getObjectToTestReference();
-      const found = arr.some((item: any) => plugins.fastDeepEqual(item, value)); // Assuming fastDeepEqual checks deep equality
+      if (!Array.isArray(arr)) {
+        throw new Error(
+          this.createErrorMessage(`Expected value{path} to be an array, but got ${typeof arr}`)
+        );
+      }
+      
+      const found = arr.some((item: any) => plugins.fastDeepEqual(item, value));
       if (!found) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} does not contain the value ${value}`
+          this.createErrorMessage(`Expected array{path} to contain an item equal to ${this.formatValue(value)}`)
         );
       }
     });
@@ -459,9 +598,10 @@ export class Assertion {
 
   public toBeArray() {
     return this.runCheck(() => {
-      if (!Array.isArray(this.getObjectToTestReference())) {
+      const value = this.getObjectToTestReference();
+      if (!Array.isArray(value)) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not an array`
+          this.createErrorMessage(`Expected value{path} to be an array, but got ${typeof value}`)
         );
       }
     });
@@ -469,9 +609,15 @@ export class Assertion {
 
   public toInclude(substring: string) {
     return this.runCheck(() => {
-      if (!this.getObjectToTestReference().includes(substring)) {
+      const value = this.getObjectToTestReference();
+      if (typeof value !== 'string') {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} does not include the substring ${substring}`
+          this.createErrorMessage(`Expected value{path} to be a string, but got ${typeof value}`)
+        );
+      }
+      if (!value.includes(substring)) {
+        throw new Error(
+          this.createErrorMessage(`Expected string{path} to include "${substring}", but it doesn't`)
         );
       }
     });
@@ -480,9 +626,14 @@ export class Assertion {
   public toHaveLengthGreaterThan(length: number) {
     return this.runCheck(() => {
       const obj = this.getObjectToTestReference();
-      if (typeof obj.length !== 'number' || obj.length <= length) {
+      if (typeof obj.length !== 'number') {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} does not have a length greater than ${length}`
+          this.createErrorMessage(`Expected value{path} to have a length property, but it doesn't`)
+        );
+      }
+      if (obj.length <= length) {
+        throw new Error(
+          this.createErrorMessage(`Expected value{path} to have length greater than ${length}, but got length ${obj.length}`)
         );
       }
     });
@@ -491,9 +642,14 @@ export class Assertion {
   public toHaveLengthLessThan(length: number) {
     return this.runCheck(() => {
       const obj = this.getObjectToTestReference();
-      if (typeof obj.length !== 'number' || obj.length >= length) {
+      if (typeof obj.length !== 'number') {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} does not have a length less than ${length}`
+          this.createErrorMessage(`Expected value{path} to have a length property, but it doesn't`)
+        );
+      }
+      if (obj.length >= length) {
+        throw new Error(
+          this.createErrorMessage(`Expected value{path} to have length less than ${length}, but got length ${obj.length}`)
         );
       }
     });
@@ -501,9 +657,10 @@ export class Assertion {
 
   public toBeDate() {
     return this.runCheck(() => {
-      if (!(this.getObjectToTestReference() instanceof Date)) {
+      const value = this.getObjectToTestReference();
+      if (!(value instanceof Date)) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not a date`
+          this.createErrorMessage(`Expected value{path} to be a Date, but got ${value.constructor ? value.constructor.name : typeof value}`)
         );
       }
     });
@@ -511,9 +668,15 @@ export class Assertion {
 
   public toBeBeforeDate(date: Date) {
     return this.runCheck(() => {
-      if (!(this.getObjectToTestReference() < date)) {
+      const value = this.getObjectToTestReference();
+      if (!(value instanceof Date)) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not before ${date}`
+          this.createErrorMessage(`Expected value{path} to be a Date, but got ${value.constructor ? value.constructor.name : typeof value}`)
+        );
+      }
+      if (value >= date) {
+        throw new Error(
+          this.createErrorMessage(`Expected date{path} to be before ${date.toISOString()}, but got ${value.toISOString()}`)
         );
       }
     });
@@ -521,24 +684,53 @@ export class Assertion {
 
   public toBeAfterDate(date: Date) {
     return this.runCheck(() => {
-      if (!(this.getObjectToTestReference() > date)) {
+      const value = this.getObjectToTestReference();
+      if (!(value instanceof Date)) {
         throw new Error(
-          `${this.baseReference} with drill down ${this.propertyDrillDown} is not after ${date}`
+          this.createErrorMessage(`Expected value{path} to be a Date, but got ${value.constructor ? value.constructor.name : typeof value}`)
+        );
+      }
+      if (value <= date) {
+        throw new Error(
+          this.createErrorMessage(`Expected date{path} to be after ${date.toISOString()}, but got ${value.toISOString()}`)
         );
       }
     });
   }
 
-  public customAssertion(assertionFunction: (value: any) => boolean, errorMessage: string) {
+  public customAssertion(
+    assertionFunction: (value: any) => boolean,
+    errorMessage: string
+  ) {
     return this.runCheck(() => {
-      if (!assertionFunction(this.getObjectToTestReference())) {
+      const value = this.getObjectToTestReference();
-        throw new Error(errorMessage);
+      if (!assertionFunction(value)) {
+        throw new Error(this.failMessage || errorMessage);
       }
     });
   }
 
+  /**
+   * Drill into a property
+   */
   public property(propertyNameArg: string) {
     this.propertyDrillDown.push(propertyNameArg);
     return this;
   }
-}
+
+  /**
+   * Drill into an array index
+   */
+  public arrayItem(indexArg: number) {
+    // Save the number (instead of "[index]")
+    this.propertyDrillDown.push(indexArg);
+    return this;
+  }
+
+  public log() {
+    console.log(`Current value:`);
+    console.log(JSON.stringify(this.getObjectToTestReference(), null, 2));
+    console.log(`Path: ${this.formatDrillDown() || '(root)'}`);
+    return this;
+  }
+}

tsconfig.json

@@ -1,11 +1,15 @@
 {
   "compilerOptions": {
     "experimentalDecorators": true,
+    "emitDecoratorMetadata": true,
     "useDefineForClassFields": false,
     "target": "ES2022",
-    "module": "ES2022",
+    "module": "NodeNext",
-    "moduleResolution": "nodenext",
+    "moduleResolution": "NodeNext",
     "esModuleInterop": true,
-    "verbatimModuleSyntax": true,
+    "verbatimModuleSyntax": true
-  }
+  },
+  "exclude": [
+    "dist_*/**/*.d.ts"
+  ]
 }