chore: migrate image providers to TS (#178)

8 files changed, 590 insertions, 492 deletions

diff --git a/.gitignore b/.gitignore
index 8baf9aee..b5160838 100644
--- a/.gitignore
+++ b/.gitignore
@@ -87,5 +87,4 @@ REVISION
 
 /lib/*
 !/lib/locales.js
-!/lib/image_providers
 !/lib/locales
diff --git a/lib/image_providers/lorempicsum.js b/lib/image_providers/lorempicsum.js
deleted file mode 100644
index 65639da7..00000000
--- a/lib/image_providers/lorempicsum.js
+++ /dev/null
@@ -1,106 +0,0 @@
-/**
- *
- * @namespace lorempicsum
- * @memberof faker.image
- */
-var LoremPicsum = function (faker) {
-  var self = this;
-
-  /**
-   * image
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} grayscale
-   * @param {number} blur 1-10
-   * @method faker.image.lorempicsum.image
-   * @description search image from unsplash
-   */
-  self.image = function (width, height, grayscale, blur) {
-    return self.imageUrl(width, height, grayscale, blur);
-  };
-  /**
-   * imageGrayscaled
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} grayscale
-   * @method faker.image.lorempicsum.imageGrayscaled
-   * @description search grayscale image from unsplash
-   */
-  self.imageGrayscale = function (width, height, grayscale) {
-    return self.imageUrl(width, height, grayscale);
-  };
-  /**
-   * imageBlurred
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {number} blur 1-10
-   * @method faker.image.lorempicsum.imageBlurred
-   * @description search blurred image from unsplash
-   */
-  self.imageBlurred = function (width, height, blur) {
-    return self.imageUrl(width, height, undefined, blur);
-  };
-  /**
-   * imageRandomSeeded
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} grayscale
-   * @param {number} blur 1-10
-   * @param {string} seed
-   * @method faker.image.lorempicsum.imageRandomSeeded
-   * @description search same random image from unsplash, based on a seed
-   */
-  self.imageRandomSeeded = function (width, height, grayscale, blur, seed) {
-    return self.imageUrl(width, height, grayscale, blur, seed);
-  };
-  /**
-   * avatar
-   *
-   * @method faker.image.lorempicsum.avatar
-   */
-  self.avatar = function () {
-    return faker.internet.avatar();
-  };
-  /**
-   * imageUrl
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} grayscale
-   * @param {number} blur 1-10
-   * @param {string} seed
-   * @method faker.image.lorempicsum.imageUrl
-   */
-  self.imageUrl = function (width, height, grayscale, blur, seed) {
-    var width = width || 640;
-    var height = height || 480;
-
-    var url = 'https://picsum.photos';
-
-    if (seed) {
-      url += '/seed/' + seed;
-    }
-
-    url += '/' + width + '/' + height;
-
-    if (grayscale && blur) {
-      return url + '?grayscale' + '&blur=' + blur;
-    }
-
-    if (grayscale) {
-      return url + '?grayscale';
-    }
-
-    if (blur) {
-      return url + '?blur=' + blur;
-    }
-
-    return url;
-  };
-};
-
-module['exports'] = LoremPicsum;
diff --git a/lib/image_providers/lorempixel.js b/lib/image_providers/lorempixel.js
deleted file mode 100644
index 24ad4806..00000000
--- a/lib/image_providers/lorempixel.js
+++ /dev/null
@@ -1,241 +0,0 @@
-/**
- *
- * @namespace lorempixel
- * @memberof faker.image
- */
-var Lorempixel = function (faker) {
-  var self = this;
-
-  /**
-   * image
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.image
-   */
-  self.image = function (width, height, randomize) {
-    var categories = [
-      'abstract',
-      'animals',
-      'business',
-      'cats',
-      'city',
-      'food',
-      'nightlife',
-      'fashion',
-      'people',
-      'nature',
-      'sports',
-      'technics',
-      'transport',
-    ];
-    return self[faker.random.arrayElement(categories)](
-      width,
-      height,
-      randomize
-    );
-  };
-  /**
-   * avatar
-   *
-   * @method faker.image.lorempixel.avatar
-   */
-  self.avatar = function () {
-    return faker.internet.avatar();
-  };
-  /**
-   * imageUrl
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {string} category
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.imageUrl
-   */
-  self.imageUrl = function (width, height, category, randomize) {
-    var width = width || 640;
-    var height = height || 480;
-
-    var url = 'https://lorempixel.com/' + width + '/' + height;
-    if (typeof category !== 'undefined') {
-      url += '/' + category;
-    }
-
-    if (randomize) {
-      url += '?' + faker.datatype.number();
-    }
-
-    return url;
-  };
-  /**
-   * abstract
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.abstract
-   */
-  self.abstract = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(
-      width,
-      height,
-      'abstract',
-      randomize
-    );
-  };
-  /**
-   * animals
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.animals
-   */
-  self.animals = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(width, height, 'animals', randomize);
-  };
-  /**
-   * business
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.business
-   */
-  self.business = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(
-      width,
-      height,
-      'business',
-      randomize
-    );
-  };
-  /**
-   * cats
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.cats
-   */
-  self.cats = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(width, height, 'cats', randomize);
-  };
-  /**
-   * city
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.city
-   */
-  self.city = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(width, height, 'city', randomize);
-  };
-  /**
-   * food
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.food
-   */
-  self.food = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(width, height, 'food', randomize);
-  };
-  /**
-   * nightlife
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.nightlife
-   */
-  self.nightlife = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(
-      width,
-      height,
-      'nightlife',
-      randomize
-    );
-  };
-  /**
-   * fashion
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.fashion
-   */
-  self.fashion = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(width, height, 'fashion', randomize);
-  };
-  /**
-   * people
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.people
-   */
-  self.people = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(width, height, 'people', randomize);
-  };
-  /**
-   * nature
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.nature
-   */
-  self.nature = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(width, height, 'nature', randomize);
-  };
-  /**
-   * sports
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.sports
-   */
-  self.sports = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(width, height, 'sports', randomize);
-  };
-  /**
-   * technics
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.technics
-   */
-  self.technics = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(
-      width,
-      height,
-      'technics',
-      randomize
-    );
-  };
-  /**
-   * transport
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {boolean} randomize
-   * @method faker.image.lorempixel.transport
-   */
-  self.transport = function (width, height, randomize) {
-    return faker.image.lorempixel.imageUrl(
-      width,
-      height,
-      'transport',
-      randomize
-    );
-  };
-};
-
-module['exports'] = Lorempixel;
diff --git a/lib/image_providers/unsplash.js b/lib/image_providers/unsplash.js
deleted file mode 100644
index e53f270a..00000000
--- a/lib/image_providers/unsplash.js
+++ /dev/null
@@ -1,137 +0,0 @@
-/**
- *
- * @namespace unsplash
- * @memberof faker.image
- */
-var Unsplash = function (faker) {
-  var self = this;
-  var categories = [
-    'food',
-    'nature',
-    'people',
-    'technology',
-    'objects',
-    'buildings',
-  ];
-
-  /**
-   * image
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {string} keyword
-   * @method faker.image.unsplash.image
-   * @description search image from unsplash
-   */
-  self.image = function (width, height, keyword) {
-    return self.imageUrl(width, height, undefined, keyword);
-  };
-  /**
-   * avatar
-   *
-   * @method faker.image.unsplash.avatar
-   */
-  self.avatar = function () {
-    return faker.internet.avatar();
-  };
-  /**
-   * imageUrl
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {string} category
-   * @param {string} keyword
-   * @method faker.image.unsplash.imageUrl
-   */
-  self.imageUrl = function (width, height, category, keyword) {
-    var width = width || 640;
-    var height = height || 480;
-
-    var url = 'https://source.unsplash.com';
-
-    if (typeof category !== 'undefined') {
-      url += '/category/' + category;
-    }
-
-    url += '/' + width + 'x' + height;
-
-    if (typeof keyword !== 'undefined') {
-      var keywordFormat = new RegExp(
-        '^([A-Za-z0-9].+,[A-Za-z0-9]+)$|^([A-Za-z0-9]+)$'
-      );
-      if (keywordFormat.test(keyword)) {
-        url += '?' + keyword;
-      }
-    }
-
-    return url;
-  };
-  /**
-   * food
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {string} keyword
-   * @method faker.image.unsplash.food
-   */
-  self.food = function (width, height, keyword) {
-    return faker.image.unsplash.imageUrl(width, height, 'food', keyword);
-  };
-  /**
-   * people
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {string} keyword
-   * @method faker.image.unsplash.people
-   */
-  self.people = function (width, height, keyword) {
-    return faker.image.unsplash.imageUrl(width, height, 'people', keyword);
-  };
-  /**
-   * nature
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {string} keyword
-   * @method faker.image.unsplash.nature
-   */
-  self.nature = function (width, height, keyword) {
-    return faker.image.unsplash.imageUrl(width, height, 'nature', keyword);
-  };
-  /**
-   * technology
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {string} keyword
-   * @method faker.image.unsplash.technology
-   */
-  self.technology = function (width, height, keyword) {
-    return faker.image.unsplash.imageUrl(width, height, 'technology', keyword);
-  };
-  /**
-   * objects
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {string} keyword
-   * @method faker.image.unsplash.objects
-   */
-  self.objects = function (width, height, keyword) {
-    return faker.image.unsplash.imageUrl(width, height, 'objects', keyword);
-  };
-  /**
-   * buildings
-   *
-   * @param {number} width
-   * @param {number} height
-   * @param {string} keyword
-   * @method faker.image.unsplash.buildings
-   */
-  self.buildings = function (width, height, keyword) {
-    return faker.image.unsplash.imageUrl(width, height, 'buildings', keyword);
-  };
-};
-
-module['exports'] = Unsplash;
diff --git a/src/image.ts b/src/image.ts
index e16fa348..00e94114 100644
--- a/src/image.ts
+++ b/src/image.ts
@@ -1,16 +1,15 @@
 import type { Faker } from '.';
-
-const Lorempixel = require('./image_providers/lorempixel');
-const Unsplash = require('./image_providers/unsplash');
-const LoremPicsum = require('./image_providers/lorempicsum');
+import { Lorempixel } from './image_providers/lorempixel';
+import { Unsplash } from './image_providers/unsplash';
+import { LoremPicsum } from './image_providers/lorempicsum';
 
 /**
  * Default provider is unsplash image provider.
  */
 export class Image {
-  readonly lorempixel: typeof Lorempixel;
-  readonly unsplash: typeof Unsplash;
-  readonly lorempicsum: typeof LoremPicsum;
+  readonly lorempixel: Lorempixel;
+  readonly unsplash: Unsplash;
+  readonly lorempicsum: LoremPicsum;
 
   constructor(private readonly faker: Faker) {
     // Bind `this` so namespaced is working correctly
diff --git a/src/image_providers/lorempicsum.ts b/src/image_providers/lorempicsum.ts
new file mode 100644
index 00000000..32c52867
--- /dev/null
+++ b/src/image_providers/lorempicsum.ts
@@ -0,0 +1,127 @@
+import type { Faker } from '..';
+
+export class LoremPicsum {
+  constructor(private readonly faker: Faker) {}
+
+  /**
+   * image
+   *
+   * @param width
+   * @param height
+   * @param grayscale
+   * @param blur 1-10
+   * @method faker.image.lorempicsum.image
+   * @description search image from unsplash
+   */
+  image(
+    width?: number,
+    height?: number,
+    grayscale?: boolean,
+    blur?: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
+  ): string {
+    return this.imageUrl(width, height, grayscale, blur);
+  }
+
+  /**
+   * imageGrayscaled
+   *
+   * @param width
+   * @param height
+   * @param grayscale
+   * @method faker.image.lorempicsum.imageGrayscaled
+   * @description search grayscale image from unsplash
+   */
+  imageGrayscale(width?: number, height?: number, grayscale?: boolean): string {
+    return this.imageUrl(width, height, grayscale);
+  }
+
+  /**
+   * imageBlurred
+   *
+   * @param width
+   * @param height
+   * @param blur 1-10
+   * @method faker.image.lorempicsum.imageBlurred
+   * @description search blurred image from unsplash
+   */
+  imageBlurred(
+    width?: number,
+    height?: number,
+    blur?: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10
+  ): string {
+    return this.imageUrl(width, height, undefined, blur);
+  }
+
+  /**
+   * imageRandomSeeded
+   *
+   * @param width
+   * @param height
+   * @param grayscale
+   * @param blur 1-10
+   * @param seed
+   * @method faker.image.lorempicsum.imageRandomSeeded
+   * @description search same random image from unsplash, based on a seed
+   */
+  imageRandomSeeded(
+    width?: number,
+    height?: number,
+    grayscale?: boolean,
+    blur?: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10,
+    seed?: string
+  ): string {
+    return this.imageUrl(width, height, grayscale, blur, seed);
+  }
+
+  /**
+   * avatar
+   *
+   * @method faker.image.lorempicsum.avatar
+   */
+  avatar(): string {
+    return this.faker.internet.avatar();
+  }
+
+  /**
+   * imageUrl
+   *
+   * @param width
+   * @param height
+   * @param grayscale
+   * @param blur 1-10
+   * @param seed
+   * @method faker.image.lorempicsum.imageUrl
+   */
+  imageUrl(
+    width?: number,
+    height?: number,
+    grayscale?: boolean,
+    blur?: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10,
+    seed?: string
+  ): string {
+    width ||= 640;
+    height ||= 480;
+
+    let url = 'https://picsum.photos';
+
+    if (seed) {
+      url += '/seed/' + seed;
+    }
+
+    url += '/' + width + '/' + height;
+
+    if (grayscale && blur) {
+      return url + '?grayscale' + '&blur=' + blur;
+    }
+
+    if (grayscale) {
+      return url + '?grayscale';
+    }
+
+    if (blur) {
+      return url + '?blur=' + blur;
+    }
+
+    return url;
+  }
+}
diff --git a/src/image_providers/lorempixel.ts b/src/image_providers/lorempixel.ts
new file mode 100644
index 00000000..d152cd6e
--- /dev/null
+++ b/src/image_providers/lorempixel.ts
@@ -0,0 +1,296 @@
+import type { Faker } from '..';
+
+export class Lorempixel {
+  constructor(private readonly faker: Faker) {}
+
+  /**
+   * image
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.image
+   */
+  image(width?: number, height?: number, randomize?: boolean): string {
+    const categories = [
+      'abstract',
+      'animals',
+      'business',
+      'cats',
+      'city',
+      'food',
+      'nightlife',
+      'fashion',
+      'people',
+      'nature',
+      'sports',
+      'technics',
+      'transport',
+    ];
+    return this[this.faker.random.arrayElement(categories)](
+      width,
+      height,
+      randomize
+    );
+  }
+
+  /**
+   * avatar
+   *
+   * @method faker.image.lorempixel.avatar
+   */
+  avatar(): string {
+    return this.faker.internet.avatar();
+  }
+
+  /**
+   * imageUrl
+   *
+   * @param width
+   * @param height
+   * @param category
+   * @param randomize
+   * @method faker.image.lorempixel.imageUrl
+   */
+  imageUrl(
+    width?: number,
+    height?: number,
+    category?: string,
+    randomize?: boolean
+  ): string {
+    width ||= 640;
+    height ||= 480;
+
+    let url = 'https://lorempixel.com/' + width + '/' + height;
+    if (typeof category !== 'undefined') {
+      url += '/' + category;
+    }
+
+    if (randomize) {
+      url += '?' + this.faker.datatype.number();
+    }
+
+    return url;
+  }
+
+  /**
+   * abstract
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.abstract
+   */
+  abstract(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'abstract',
+      randomize
+    );
+  }
+
+  /**
+   * animals
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.animals
+   */
+  animals(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'animals',
+      randomize
+    );
+  }
+
+  /**
+   * business
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.business
+   */
+  business(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'business',
+      randomize
+    );
+  }
+
+  /**
+   * cats
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.cats
+   */
+  cats(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'cats',
+      randomize
+    );
+  }
+
+  /**
+   * city
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.city
+   */
+  city(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'city',
+      randomize
+    );
+  }
+
+  /**
+   * food
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.food
+   */
+  food(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'food',
+      randomize
+    );
+  }
+
+  /**
+   * nightlife
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.nightlife
+   */
+  nightlife(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'nightlife',
+      randomize
+    );
+  }
+
+  /**
+   * fashion
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.fashion
+   */
+  fashion(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'fashion',
+      randomize
+    );
+  }
+
+  /**
+   * people
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.people
+   */
+  people(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'people',
+      randomize
+    );
+  }
+
+  /**
+   * nature
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.nature
+   */
+  nature(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'nature',
+      randomize
+    );
+  }
+
+  /**
+   * sports
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.sports
+   */
+  sports(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'sports',
+      randomize
+    );
+  }
+
+  /**
+   * technics
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.technics
+   */
+  technics(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'technics',
+      randomize
+    );
+  }
+
+  /**
+   * transport
+   *
+   * @param width
+   * @param height
+   * @param randomize
+   * @method faker.image.lorempixel.transport
+   */
+  transport(width?: number, height?: number, randomize?: boolean): string {
+    return this.faker.image.lorempixel.imageUrl(
+      width,
+      height,
+      'transport',
+      randomize
+    );
+  }
+}
diff --git a/src/image_providers/unsplash.ts b/src/image_providers/unsplash.ts
new file mode 100644
index 00000000..269920f2
--- /dev/null
+++ b/src/image_providers/unsplash.ts
@@ -0,0 +1,161 @@
+import type { Faker } from '..';
+
+export class Unsplash {
+  categories = [
+    'food',
+    'nature',
+    'people',
+    'technology',
+    'objects',
+    'buildings',
+  ];
+
+  constructor(private readonly faker: Faker) {}
+
+  /**
+   * image
+   *
+   * @param width
+   * @param height
+   * @param keyword
+   * @method faker.image.unsplash.image
+   * @description search image from unsplash
+   */
+  image(width?: number, height?: number, keyword?: string): string {
+    return this.imageUrl(width, height, undefined, keyword);
+  }
+
+  /**
+   * avatar
+   *
+   * @method faker.image.unsplash.avatar
+   */
+  avatar() {
+    return this.faker.internet.avatar();
+  }
+
+  /**
+   * imageUrl
+   *
+   * @param width
+   * @param height
+   * @param category
+   * @param keyword
+   * @method faker.image.unsplash.imageUrl
+   */
+  imageUrl(
+    width?: number,
+    height?: number,
+    category?: string,
+    keyword?: string
+  ): string {
+    width ||= 640;
+    height ||= 480;
+
+    let url = 'https://source.unsplash.com';
+
+    if (typeof category !== 'undefined') {
+      url += '/category/' + category;
+    }
+
+    url += '/' + width + 'x' + height;
+
+    if (typeof keyword !== 'undefined') {
+      const keywordFormat = new RegExp(
+        '^([A-Za-z0-9].+,[A-Za-z0-9]+)$|^([A-Za-z0-9]+)$'
+      );
+      if (keywordFormat.test(keyword)) {
+        url += '?' + keyword;
+      }
+    }
+
+    return url;
+  }
+
+  /**
+   * food
+   *
+   * @param width
+   * @param height
+   * @param keyword
+   * @method faker.image.unsplash.food
+   */
+  food(width?: number, height?: number, keyword?: string): string {
+    return this.faker.image.unsplash.imageUrl(width, height, 'food', keyword);
+  }
+
+  /**
+   * people
+   *
+   * @param width
+   * @param height
+   * @param keyword
+   * @method faker.image.unsplash.people
+   */
+  people(width?: number, height?: number, keyword?: string): string {
+    return this.faker.image.unsplash.imageUrl(width, height, 'people', keyword);
+  }
+
+  /**
+   * nature
+   *
+   * @param width
+   * @param height
+   * @param keyword
+   * @method faker.image.unsplash.nature
+   */
+  nature(width?: number, height?: number, keyword?: string): string {
+    return this.faker.image.unsplash.imageUrl(width, height, 'nature', keyword);
+  }
+
+  /**
+   * technology
+   *
+   * @param width
+   * @param height
+   * @param keyword
+   * @method faker.image.unsplash.technology
+   */
+  technology(width?: number, height?: number, keyword?: string): string {
+    return this.faker.image.unsplash.imageUrl(
+      width,
+      height,
+      'technology',
+      keyword
+    );
+  }
+
+  /**
+   * objects
+   *
+   * @param width
+   * @param height
+   * @param keyword
+   * @method faker.image.unsplash.objects
+   */
+  objects(width?: number, height?: number, keyword?: string): string {
+    return this.faker.image.unsplash.imageUrl(
+      width,
+      height,
+      'objects',
+      keyword
+    );
+  }
+
+  /**
+   * buildings
+   *
+   * @param width
+   * @param height
+   * @param keyword
+   * @method faker.image.unsplash.buildings
+   */
+  buildings(width?: number, height?: number, keyword?: string): string {
+    return this.faker.image.unsplash.imageUrl(
+      width,
+      height,
+      'buildings',
+      keyword
+    );
+  }
+}