chore: remove arrayElement(s) js only error (#2958)

faker-js · Jun 21, 2024 · d31c635 · d31c635
1 parent d6924f7
commit d31c635
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diff --git a/docs/guide/upgrading.md b/docs/guide/upgrading.md
@@ -349,6 +349,24 @@ const city = enforcer.enforce(faker.location.city, {
 `enforce-unique` does not directly support the `store` option previously available in `faker.helpers.unique`. If you were previously using this parameter, check the [documentation](https://www.npmjs.com/package/enforce-unique). If you need to reset the store, you can call the `reset()` method on the `UniqueEnforcer` instance.
 :::
 
+#### `faker.helpers.arrayElement` and `faker.helpers.arrayElements`
+
+The following only affects usage in Javascript, as in Typescript this usage would already throw a compile-time error.
+
+Previously, the `arrayElement` and `arrayElements` methods would throw a dedicated error, when called without arguments.
+
+```ts
+faker.helpers.arrayElement(undefined); // FakerError: Calling `faker.helpers.arrayElement()` without arguments is no longer supported.
+```
+
+Now, it throws a JS native error:
+
+```ts
+faker.helpers.arrayElement(undefined); // TypeError: Cannot read properties of undefined (reading 'length')
+```
+
+Calling the methods with an empty array instead still behaves as before.
+
 ### Image Module
 
 Removed deprecated image methods

diff --git a/src/modules/helpers/index.ts b/src/modules/helpers/index.ts
@@ -844,13 +844,6 @@ export class SimpleHelpersModule extends SimpleModuleBase {
    * @since 6.3.0
    */
   arrayElement<const T>(array: ReadonlyArray<T>): T {
-    // TODO @xDivisionByZerox 2023-04-20: Remove in v9
-    if (array == null) {
-      throw new FakerError(
-        'Calling `faker.helpers.arrayElement()` without arguments is no longer supported.'
-      );
-    }
-
     if (array.length === 0) {
       throw new FakerError('Cannot get value from empty dataset.');
     }
@@ -954,13 +947,6 @@ export class SimpleHelpersModule extends SimpleModuleBase {
           max: number;
         }
   ): T[] {
-    // TODO @xDivisionByZerox 2023-04-20: Remove in v9
-    if (array == null) {
-      throw new FakerError(
-        'Calling `faker.helpers.arrayElements()` without arguments is no longer supported.'
-      );
-    }
-
     if (array.length === 0) {
       return [];
     }

diff --git a/test/modules/helpers.spec.ts b/test/modules/helpers.spec.ts
@@ -190,15 +190,6 @@ describe('helpers', () => {
           expect(actual).toBe('hello');
         });
 
-        it('should throw with no arguments', () => {
-          // @ts-expect-error: `arrayElement` without arguments is not supported in TypeScript
-          expect(() => faker.helpers.arrayElement()).toThrow(
-            new FakerError(
-              'Calling `faker.helpers.arrayElement()` without arguments is no longer supported.'
-            )
-          );
-        });
-
         it('should throw on an empty array', () => {
           expect(() => faker.helpers.arrayElement([])).toThrow(
             new FakerError('Cannot get value from empty dataset.')
@@ -468,15 +459,6 @@ describe('helpers', () => {
           }
         );
 
-        it('should throw with no arguments', () => {
-          // @ts-expect-error: `arrayElements` without arguments is not supported in TypeScript
-          expect(() => faker.helpers.arrayElements()).toThrow(
-            new FakerError(
-              'Calling `faker.helpers.arrayElements()` without arguments is no longer supported.'
-            )
-          );
-        });
-
         describe('should not throw on an array with nullish elements', () => {
           it.each(['', 0, undefined, null, false])('%s', (nullishValue) => {
             expect(() =>