angular-package

The angular-package supports the development process of angular-based applications in varied ways through the thoughtful, reusable, easy-to-use small pieces of code called packages.

angular-package/property

Features to handle properties.

export {
  // Class.
  Property,
  WrapProperty,
} from './lib';

export {
  // Class.
  Descriptor,
  Descriptors,
  // Interface.
  AccessorDescriptor,
  CommonDescriptor,
  DataDescriptor,
  // Type.
  ThisAccessorDescriptor,
} from './descriptor';

export { GetterCallback, SetterCallback } from './type';

Previous README.md

Skeleton
Installation
Callback
Package
- Descriptor
  - Class
  - Interface
  - Type
- Descriptors
Git
- Commit
- Versioning
License
Packages

How angular-package understands

Checks

Is to check the provided value to be the same as expected.

Type guard (constrain)

Constrains the parameter type to not let input unexpected value in the code editor.

Guards

Is a combination of both above, constrains the type of the parameter in the code editor, and checks its argument.

Sets

Sets the provided value in the object.

Defines

Returns defined value from the method, instead of storing it in the object.

Skeleton

This package was generated by the skeleton workspace with Angular CLI version 14.2.0.

Copy this package to the packages/property folder of the skeleton workspace then run the commands below.

Code scaffolding

Note: Don't forget to add --project property or else it will be added to the default project in your angular.json file.

Build

Run ng build property to build the project. The build artifacts will be stored in the dist/ directory.

Publishing

After building your library with ng build property, go to the dist folder cd dist/property and run npm publish.

Running unit tests

Run ng test property to execute the unit tests via Karma.

Further help

To get more help on the Angular CLI use ng help or go check out the Angular CLI Overview and Command Reference page.

Installation

Install @angular-package/property package with command:

npm i --save @angular-package/property

Callback

Wrapper for the ResultCallback type function to throw an Error with the specified message on the specified false or true state.

export const errorCallback: ErrorCallback  = (
  message: string,
  on: boolean = false
): ResultCallback => {
  return (result: boolean, value: any): boolean => {
    if (result === on) {
      throw new Error(
        `${message}, got value ${
          typeof value === 'object' ? JSON.stringify(value) : value
        }`
      );
    }
    return result;
  };
};

Package

Descriptor package

Descriptor features to import.

// Class.
export {
  Descriptor,
  Descriptors
} from './lib';

// Interface.
export {
  AccessorDescriptor,
  CommonDescriptor,
  DataDescriptor
} from './interface';

// Type.
export {
  ThisAccessorDescriptor
} from './type';

`Descriptor`

Handles object property descriptor.

Features:

Strictly defines accessor and data descriptor with the defineAccessor() and defineData() static methods.
Strictly sets, and stores accessor and data descriptor with the Descriptor instance respectively set.accessor() and set.data() methods of the instance.
Get privately stored accessor descriptor defined by the set.accessor() method by using get.accessor property of the instance.
Get privately stored data descriptor defined by the set.data() method by using get.data property of the instance.

Strictly means, it guards provided descriptor by checking it against its unique keys and by picking only properties that belong to the appropriate descriptor.

Descriptor<Value, Obj = any> { ... }

Descriptor static methods

`Descriptor.defineAccessor()`

Returns defined accessor descriptor of a ThisAccessorDescriptor<Value, Obj> type, on get or set property detected.

static defineAccessor<Value, Obj>(
  descriptor: ThisAccessorDescriptor<Value, Obj>,
  callback?: ResultCallback
): ThisAccessorDescriptor<Value, Obj> { ... }

Generic type variables:

Name	Description
`Value`	Guards the value type of the `get()` and `set()` methods of the `descriptor` object, and in the return type `ThisAccessorDescriptor<Value, Obj>`
`Obj`	Gives the possibility to use the `this` keyword that refers to the `Obj` variable inside the `get()` and `set()` methods of the `descriptor` object, and in the return type `ThisAccessorDescriptor<Value, Obj>`

Parameters:

Name: `type`	Description
descriptor: `ThisAccessorDescriptor<Value, Obj>`	An `object` of a `ThisAccessorDescriptor<Value, Obj>` type to define with the default values of the `CommonDescriptor`
callback?: `ResultCallback`	An optional `ResultCallback` function to handle the result of the check whether or not the `descriptor` is an `object` with `get` or `set` property, by default it uses `accessorCallback()` function

Throws:

Throws an Error if the descriptor is not an object of a ThisAccessorDescriptor<Value, Obj> type, which means it doesn't contain get or set property.

Returns:

The return value is an object of a ThisAccessorDescriptor<Value, Obj> type.

Usage:

// Example usage.
import { Descriptor } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = Descriptor.defineAccessor<string, Person>({
  configurable: false,
  enumerable: false,
  get(): string {
    return people.firstName;
  },
  set(value: string): void {
    people.firstName = value;
  },
});

// Define the property `firstName` in the `person` object to link with the same property in the `people` object.
// Changes to the property `firstName` in the `person` object affect the property `firstName` in the `people` object.
Object.defineProperty(person, 'firstName', firstNameDescriptor);

`Descriptor.defineData()`

Returns defined data descriptor of a DataDescriptor<Value> interface, on writable or value property detected.

static defineData<Value>(
  descriptor: DataDescriptor<Value>,
  callback: ResultCallback = dataCallback
): DataDescriptor<Value> { ... }

Generic type variables:

Name	Description
`Value`	Guards the `value` property from the `descriptor` object, and the return type of a `DataDescriptor<Value>` interface

Parameters:

Name: `type`	Description
descriptor: `DataDescriptor<Value>`	An `object` of a `DataDescriptor<Value>` interface to define with the default values of the `CommonDescriptor`
callback?: `ResultCallback`	An optional `ResultCallback` function to handle the result of the check whether or not the `descriptor` is an `object` with `writable` or `value` property, by default it uses `dataCallback()` function

Throws:

Throws an Error if the descriptor is not an object of a DataDescriptor<Value> type, which means it doesn't contain writable or value property.

Returns:

The return value is an object of a DataDescriptor<Value> interface.

Usage:

// Example usage.
import { Descriptor } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = Descriptor.defineData<string>({
  configurable: false,
  enumerable: false,
  writable: false,
  value: people.firstName
});

// Defines the property `firstName` of a type string in the `person` object with the same value as the property in the `people` object.
Object.defineProperty(person, 'firstName', firstNameDescriptor);

`Descriptor.get()`

Returns property descriptor from the property of the specified detected object.

public static get<Obj, Name extends keyof Obj>(
  object: Obj,
  name: Name
): PropertyDescriptor | undefined { ... }

`Descriptor.getAll()`

Returns property descriptors from the specified detected object.

public static getAll<Obj extends object | Function>(
  object: Obj
): ObjectPropertyDescriptors<Obj> { ... }

`AccessorDescriptors`

Strictly defines, sets, and stores privately property accessor descriptor of a ThisAccessorDescriptor<Value, Obj> type.

Strictly means, methods picks configurable, enumerable, get, set properties from the provided descriptor object.

Features:

Guarded process of defining the object descriptor, but properties are not being checked against proper values.
Strictly defines property accessor descriptor.
Strictly sets, and stores at the same time property accessor descriptor.
Accessor descriptor is of a ThisAccessorDescriptor<Value, Obj> type: The return value of the get() function is of a generic Value type. The parameter of the set() function is of a generic Value type. Keyword this refers to an Obj variable in both get() and set() functions.
Method set() of the instance and static define() picks configurable, enumerable, get, set properties from the provided data.
Get privately stored accessor descriptor defined by the set() method of the instance.

AccessorDescriptors<Value, Obj = any> { ... }

`AccessorDescriptors` static methods

`AccessorDescriptors.define()`

Returns defined accessor descriptor of a ThisAccessorDescriptor<Value, Obj> type, on get or set property detected.

static define<Value, Obj>(
  descriptor: ThisAccessorDescriptor<Value, Obj>,
  callback?: ResultCallback
): ThisAccessorDescriptor<Value, Obj> { ... }

Generic type variables:

Name	Description
`Value`	Guards the value type of the `get()` and `set()` functions of the `descriptor` object, and the return type `ThisAccessorDescriptor<Value, Obj>`
`Obj`	Gives the possibility to use the `this` keyword that refers to the `Obj` variable inside the `get()` and `set()` functions of the `descriptor` object, and in the return type `ThisAccessorDescriptor<Value, Obj>`

Parameters:

Name: `type`	Description
`descriptor: ThisAccessorDescriptor<Value, Obj>`	An `object` of a `ThisAccessorDescriptor<Value, Obj>` type to define with the default values of the `CommonDescriptor`
`callback?: ResultCallback`	An optional `ResultCallback` function to handle the result of the check whether or not the `descriptor` is an `object` with `get` or `set` property, by default it uses `accessorCallback()` function

Throws:

Throws an Error if the descriptor is not an object of a ThisAccessorDescriptor<Value, Obj> type, which means it doesn't contain get or set property.

Returns:

The return value is an object of a ThisAccessorDescriptor<Value, Obj> type.

Usage:

// Example usage.
import { AccessorDescriptors } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = AccessorDescriptors.define<string, Person>({
  get(): string {
    return people.firstName;
  },
  set(value: string): void {
    people.firstName = value;
  },
});

// Define the property `firstName` in the `person` object to link with the same property in the `people` object.
// Changes to the property `firstName` in the `person` object affect the property `firstName` in the `people` object.
Object.defineProperty(person, 'firstName', firstNameDescriptor);

`AccessorDescriptors` Constructor

`AccessorDescriptors()`

Creates an instance, and optionally sets an accessor descriptor of a ThisAccessorDescriptor<Value, Obj> type.

AccessorDescriptors<Value, Obj>(descriptor?: ThisAccessorDescriptor<Value, Obj>)

Generic type variables:

Name	Description
`Value`	Guards the value type of the `get()` and `set()` functions of the `descriptor` object
`Obj`	Gives the possibility to use the `this` keyword that refers to the `Obj` variable inside the `get()` and `set()` functions of the `descriptor` object

Parameters:

Name: `type`	Description
`descriptor?: ThisAccessorDescriptor<Value, Obj>`	An optional `object` of a `ThisAccessorDescriptor<Value, Obj>` type to initially set accessor descriptor

Usage:

// Example usage.
import { AccessorDescriptors } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = new AccessorDescriptors<string, Person>({
  get(): string {
    return people.firstName;
  },
  set(value: string): void {
    people.firstName = value;
  },
});

`AccessorDescriptors` instance methods

`AccessorDescriptors.prototype.set()`

Strictly sets with the last saved descriptor values, and stores privately accessor descriptor of a ThisAccessorDescriptor<Value, Obj> type.

set(
  descriptor: ThisAccessorDescriptor<Value, Obj>,
  callback?: ResultCallback
): this { ... }

Parameters:

Name: `type`	Description
`descriptor: ThisAccessorDescriptor<Value, Obj>`	An `object` of a `ThisAccessorDescriptor<Value, Obj>` interface, to set with the last saved descriptor values
`callback?: ResultCallback`	An optional `ResultCallback` function to handle the result of the check whether or not the `descriptor` is an `object` containing the `get` or `set` property, by default it uses `accessorCallback()` from the static `guard()` method

Throws:

Throws an Error if the descriptor is not an object of a ThisAccessorDescriptor<Value, Obj> type, which means doesn't contain get or set property.

Returns:

The return value is the AccessorDescriptors instance for the chaining.

Usage:

// Example usage.
import { AccessorDescriptors } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = new AccessorDescriptors<string, Person>().set({
  configurable: false,
  enumerable: false,
  get(): string {
    return people.firstName;
  },
  set(value: string): void {
    people.firstName = value;
  },
});

`AccessorDescriptors` instance properties

`AccessorDescriptors.prototype.get`

Get privately stored accessor descriptor of a ThisAccessorDescriptor<Value, Obj> type defined by the set() method.

get get(): ThisAccessorDescriptor<Value, Obj> { ... }

Usage:

// Example usage.
import { AccessorDescriptors } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = new AccessorDescriptors<string, Person>().set({
  configurable: false,
  enumerable: false,
  get(): string {
    return people.firstName;
  },
  set(value: string): void {
    people.firstName = value;
  },
});

// Define the property `firstName` in the `person` object to link with the same property in the `people` object.
// Changes to the property `firstName` in the `person` object affect the property `firstName` in the `people` object.
Object.defineProperty(person, 'firstName', firstNameDescriptor.get);

`DataDescriptors`

Strictly defines, sets, and stores privately property data descriptor of a DataDescriptor<Value> interface.

Strictly means, data descriptor of a DataDescriptor<Value> is type guarded and methods picks configurable, enumerable, writable, value properties from the provided descriptor object.

Features:

Data descriptor is of a DataDescriptor<Value> interface: The value property is of a generic Value type.
Guarded process of defining the object descriptor, but properties are not being checked against proper values.
Strictly defines property data descriptor.
Strictly sets, and stores at the same time property data descriptor.
Method set() of the instance and static define() picks configurable, enumerable, writable, value properties from the provided data.
Get privately stored data descriptor defined by the set() method of the instance.

DataDescriptors<Value> { ... }

`DataDescriptors` static methods

`DataDescriptors.define()`

Returns strictly defined data descriptor of a DataDescriptor<Value> interface, on writable or value property detected.

static define<Value>(
  descriptor: DataDescriptor<Value>,
  callback?: ResultCallback
): DataDescriptor<Value> { ... }

Generic type variables:

Name	Description
`Value`	Constrains the `value` property from the `descriptor` object, and the return type of a `DataDescriptor<Value>` interface

Parameters:

Name: `type`	Description
descriptor: `DataDescriptor<Value>`	An `object` of a `DataDescriptor<Value>` interface, to set with the default values of the `CommonDescriptor`
callback?: `ResultCallback`	An optional `ResultCallback` function to handle the result of the check whether or not the `descriptor` is an `object` with `writable` or `value` property, by default it uses `dataCallback()` function from the static `guard()` method

Throws:

Throws an Error if the descriptor is not an object of a DataDescriptor<Value> interface, which means it doesn't contain writable or value property.

Returns:

The return value is an object of a DataDescriptor<Value> interface.

Usage:

// Example usage.
import { DataDescriptors } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = DataDescriptor.define<string, Person>({
  get(): string {
    return people.firstName;
  },
  set(value: string): void {
    people.firstName = value;
  },
});

// Define the property `firstName` in the `person` object to link with the same property in the `people` object.
// Changes to the property `firstName` in the `person` object affect the property `firstName` in the `people` object.
Object.defineProperty(person, 'firstName', firstNameDescriptor);

`DataDescriptors` Constructor

`DataDescriptors()`

Creates an instance, and optionally sets a data descriptor of a DataDescriptor<Value> interface.

DataDescriptors<Value>(descriptor?: DataDescriptor<Value>)

Generic type variables:

Name	Description
`Value`	Guards the `value` property from the `descriptor` object

Parameters:

Name: `type`	Description
`descriptor?: DataDescriptor<Value>`	An optional `object` of a `DataDescriptor<Value>` interface to initially set data descriptor

Usage:

// Example usage.
import { DataDescriptors } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = new DataDescriptors<string>({ // Initialize
  writable: false,
  value: 'not writable'
});

`DataDescriptors` instance methods

`DataDescriptors.prototype.set()`

Strictly sets with the last saved descriptor values, and stores privately data descriptor of a DataDescriptor<Value> interface.

set(
  descriptor: DataDescriptor<Value>,
  callback?: ResultCallback
): this { ... }

Generic type variables:

Name	Description
`Value`	Guards the `value` property from the `descriptor` object

Parameters:

Name: `type`	Description
`descriptor: DataDescriptor<Value>`	An `object` of a `DataDescriptor<Value>` interface, to set with the last saved descriptor
`callback?: ResultCallback`	An optional `ResultCallback` function to handle the result of the check whether or not the `descriptor` is an `object` containing the `writable` or `value` property, by default it uses `dataCallback()` function from the static `guard()` method

Throws:

Throws an Error if the descriptor is not an object of a DataDescriptor<Value> type, which means doesn't contain writable or value property.

Returns:

The return value is the DataDescriptors instance for the chaining.

Usage:

// Example usage.
import { DataDescriptors } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = new DataDescriptors<string>()
.set({
  configurable: false,
  enumerable: false,
  writable: false,
  value: people.firstName
});

// Defines the property `firstName` in the `person` object with the same value as the property in the `people` object.
Object.defineProperty(person, 'firstName', firstNameDescriptor.get);

`DataDescriptors` instance properties

`DataDescriptors.prototype.get`

Get privately stored data descriptor of a DataDescriptor<Value> interface defined by the instance set() method.

get get(): DataDescriptor<Value> { ... }

Usage:

// Example usage.
import { DataDescriptors } from '@angular-package/property';

interface PersonShape {
  firstName: string;
}

class Person implements PersonShape {
  firstName = '';
}

class People {
  firstName!: string;
}

const person: Person = new Person();
const people: People = new People();

const firstNameDescriptor = new DataDescriptors<string>()
.set({
  configurable: false,
  enumerable: false,
  writable: false,
  value: people.firstName
})
// After set, get the value.
.get;

// Defines the property `firstName` in the `person` object with the same value as the property in the `people` object.
Object.defineProperty(person, 'firstName', firstNameDescriptor);

Descriptor interface

AccessorDescriptor

Descriptor with its unique optional get() and set() functions, of the Value type. For the accessor descriptor with also the object type, please use the type ThisAccessorDescriptor<Value, Obj>. More about property descriptors here.

interface AccessorDescriptor<Value> extends CommonDescriptor {
  get?: () => Value;
  set?: (value: Value) => void;
}

CommonDescriptor

Common keys configurable and enumerable of a boolean type for accessor and data descriptor, picked from the default PropertyDescriptor. More about property descriptors here.

interface CommonDescriptor
  extends Pick<PropertyDescriptor, 'configurable' | 'enumerable'> {}

DataDescriptor

Descriptor with its unique optional keys, writable of a boolean type and value of a generic Value type. More about property descriptors here.

interface DataDescriptor<Value> extends CommonDescriptor {
  writable?: boolean;
  value?: Value;
}

Descriptor type

ThisAccessorDescriptor

AccessorDescriptor interface as a type cause of ease of use this of an Obj type in the get() and set() functions. More about property descriptors here.

type ThisAccessorDescriptor<Value, Obj> = AccessorDescriptor<Value> &
  ThisType<Obj>;

Descriptors

Property descriptors container.

export class Descriptors<
  Obj extends object | Function,
  Keys extends keyof Obj
> { ... }

GIT

Commit

Versioning

Semantic Versioning 2.0.0

Given a version number MAJOR.MINOR.PATCH, increment the:

MAJOR version when you make incompatible API changes,
MINOR version when you add functionality in a backwards-compatible manner, and
PATCH version when you make backwards-compatible bug fixes.

Additional labels for pre-release and build metadata are available as extensions to the MAJOR.MINOR.PATCH format.

FAQ How should I deal with revisions in the 0.y.z initial development phase?

The simplest thing to do is start your initial development release at 0.1.0 and then increment the minor version for each subsequent release.

How do I know when to release 1.0.0?

If your software is being used in production, it should probably already be 1.0.0. If you have a stable API on which users have come to depend, you should be 1.0.0. If you’re worrying a lot about backwards compatibility, you should probably already be 1.0.0.

License

Packages

Useful and simple to use packages.

Package	Description	Status
callback	Manages the callback `function`.
change-detection	Improves application performance.
component-loader	Handles dynamic loading components.
core	Core features.
error	Manages an `Error`.
indexeddb	Wrapper to IndexedDB client-side storage.
name	The name with prefix and suffix.
preferences	Preferences, settings, options, configuration and setup in steps.
prism	`Prism` highlighter module.
property	Handles object properties.
range	The range between a minimum and maximum.
reactive	Automatize the process of creating some rxjs features.
sass	Extension for sass modules and new modules.
sass-list	Modified list Sass module.
sass-string	Modified string Sass module.
spectre.css	Modified Spectre.css - a lightweight, responsive, and modern CSS framework originally designed by Yan Zhu.
storage	The storage of data under allowed names.
tag	Any tag with optional attributes.
testing	Support for testing other packages.
text	Text on the template with replaceable tags.
type	Common types, type guards, and type checkers.
ui	User interface.
wrapper	Wrap the text with the opening and closing chars.