use interfaces instead of types when available

src/date/diffDate/index.ts

@@ -5,22 +5,22 @@ import { DateValue } from '../../types/DateValue';
 import { isValidDate } from '../isValidDate';
 import { ERROR_INVALID_DATE } from './constants';
 
-export type DiffDateResultUnits = {
+export interface DiffDateResultUnits {
   milliseconds: number;
   seconds: number;
   minutes: number;
   hours: number;
   days: number;
   months: number;
   years: number;
-};
+}
 
-export type DiffDateResult = {
+export interface DiffDateResult {
   total: DiffDateResultUnits;
   remain: DiffDateResultUnits;
   raw: number;
   inversed: boolean;
-};
+}
 
 /**
  * Returns total amount of time between two dates (years, months, days,

src/date/isValidDate/index.ts

@@ -1,13 +1,13 @@
 import { equally } from '../../filters/equally';
 import { DateValue } from '../../types/DateValue';
 
-export type IsValidDateOptions = {
+export interface IsValidDateOptions {
   /**
    * Treat falsy values (0 and '') as valid. They return zero date
    * which is 1970-01-01T00:00:00.000.
    */
   allowFalsy?: boolean;
-};
+}
 
 /**
  * Returns true if value is valid Date or suits for Date creation.

src/date/ts/index.ts

@@ -1,6 +1,6 @@
 import { FloatHandling } from '../../types/FloatHandling';
 
-export type TsOptions = {
+export interface TsOptions {
   /**
    * Date to use for timestamp creation. Current by default.
    */
@@ -14,7 +14,7 @@ export type TsOptions = {
    * @default 'keep'
    */
   milliseconds?: FloatHandling;
-};
+}
 
 /**
  * Returns a Unix timestamp for current or specified date.

src/filters/isEmpty/index.ts

@@ -6,7 +6,7 @@ import { isUndefined } from '../isUndefined';
 import { neither } from '../neither';
 import { ERROR_EMPTY_VALUES_NOT_ARRAY } from './constants';
 
-export type IsEmptyOptions = {
+export interface IsEmptyOptions {
   /**
    * Values that sould be considered as empty. By default it's NaN and
    * empty string.
@@ -15,7 +15,7 @@ export type IsEmptyOptions = {
    * i.e. set to empty array — [].
    */
   emptyValues?: any[];
-};
+}
 
 /**
  * Returns true if value is empty, i.e. undefined, null, empty string,

src/filters/isNumber/index.ts

@@ -1,4 +1,4 @@
-export type IsNumberOptions = {
+export interface IsNumberOptions {
   /**
    * Return true if value is positive or negative Infinity.
    */
@@ -8,7 +8,7 @@ export type IsNumberOptions = {
    * Return true if value is NaN.
    */
   allowNaN?: boolean;
-};
+}
 
 /**
  * Returns true if value is a number.

src/mappers/filterObject/index.ts

@@ -1,12 +1,12 @@
 import { isObject } from '../../filters/isObject';
 import { Entry } from '../../types/Entry';
 
-export type FilterObjectOptions = {
+export interface FilterObjectOptions {
   /**
    * Enable same filtering over sub-objects (if any).
    */
   recursive?: boolean;
-};
+}
 
 /**
  * Filters object entries by predicate like standard array's filter.

src/mappers/mapObject/index.ts

@@ -1,12 +1,12 @@
 import { isObject } from '../../filters/isObject';
 import { Entry } from '../../types/Entry';
 
-export type MapObjectOptions = {
+export interface MapObjectOptions {
   /**
    * Enable same mapping over sub-objects (if any).
    */
   recursive?: boolean;
-};
+}
 
 /**
  * Maps object entries by callback function like standard array's map.

src/mappers/repeat/index.ts

@@ -4,12 +4,12 @@ import {
   ERROR_TIMES_NOT_SAFE_INT,
 } from './constants';
 
-export type RepeatOptions = {
+export interface RepeatOptions {
   /**
    * How many times to repeat some action. Once by default.
    */
   times?: number;
-};
+}
 
 /**
  * Repeats some action for a specified number of times. Returns array

src/mappers/toBoolean/index.ts

@@ -2,7 +2,7 @@ import { OF_UNDEFINED } from '../../constants';
 import { isBoolean } from '../../filters/isBoolean';
 import { FallbackHandler } from '../../types/FallbackHAndler';
 
-export type ToBooleanOptions = {
+export interface ToBooleanOptions {
   /**
    * Values that should be treated as boolean false.
    * @default [ 'false' ]
@@ -21,7 +21,7 @@ export type ToBooleanOptions = {
    * Throws `TypeError` if manually unset.
    */
   onFallback?: FallbackHandler;
-};
+}
 
 /**
  * Maps value into a boolean if possible.

src/mappers/toNumber/index.ts

@@ -2,7 +2,7 @@ import { OF_UNDEFINED } from '../../constants';
 import { FallbackHandler } from '../../types/FallbackHandler';
 import { FloatHandling } from '../../types/FloatHandling';
 
-export type ToNumberOptions = {
+export interface ToNumberOptions {
   /**
    * How to handle decimal part in a value, if any.
    *
@@ -19,7 +19,7 @@ export type ToNumberOptions = {
    * Throws `TypeError` if manually unset.
    */
   onFallback?: FallbackHandler;
-};
+}
 
 /**
  * Maps value into a number if possible.

src/mappers/toString/index.ts

@@ -1,6 +1,6 @@
 import { isString } from '../../filters/isString';
 
-export type ToStringOptions = {
+export interface ToStringOptions {
   /**
    * Arguments to be passed into `value.toString()` or
    * `JSON.stringify()` if `useToJSON` options is set to true.
@@ -12,7 +12,7 @@ export type ToStringOptions = {
    * default `toString()`.
    */
   useToJSON?: boolean;
-};
+}
 
 /**
  * Maps value into a string.