Merge pull request #36 from implydata/really-remove-moment

Remove unnecessary dependencies

.changeset/violet-comics-drive.md

@@ -0,0 +1,5 @@
+---
+'chronoshift': patch
+---
+
+Removed unnecessary dependencies

package.json

@@ -56,7 +56,6 @@
   },
   "prettier": "@awesome-code-style/prettier-config",
   "dependencies": {
-    "immutable-class": "^0.11.0",
     "@internationalized/date": "^3.5.6",
     "tslib": "^2.8.1"
   },
@@ -67,12 +66,12 @@
     "@changesets/cli": "^2.27.10",
     "@types/jest": "^29.5.14",
     "@types/jest-expect-message": "^1.0.3",
-    "@types/moment-timezone": "^0.5.12",
     "@types/node": "^20.0.0",
     "eslint": "^9.15.0",
     "eslint-plugin-notice": "^1.0.0",
     "globals": "^15.12.0",
     "husky": "^2.4.1",
+    "immutable-class": "^0.11.0",
     "immutable-class-tester": "^0.7.2",
     "jest": "^29.7.0",
     "jest-expect-message": "^1.1.3",

src/duration/duration.ts

@@ -15,10 +15,9 @@
  * limitations under the License.
  */
 
-import type { Instance } from 'immutable-class';
-
 import { second, shifters } from '../floor-shift-ceil/floor-shift-ceil';
 import type { Timezone } from '../timezone/timezone';
+import type { ImmutableClassInstance } from '../utils/utils';
 
 const SPANS_WITH_WEEK = ['year', 'month', 'week', 'day', 'hour', 'minute', 'second'];
 const SPANS_WITHOUT_WEEK = ['year', 'month', 'day', 'hour', 'minute', 'second'];
@@ -142,7 +141,7 @@ function fitIntoSpans(length: number, spansToCheck: string[]): Record<string, nu
 /**
  * Represents an ISO duration like P1DT3H
  */
-export class Duration implements Instance<DurationValue, string> {
+export class Duration implements ImmutableClassInstance<DurationValue, string> {
   public singleSpan?: string;
   public spans: DurationValue;
 

src/index.ts

@@ -14,12 +14,8 @@
  * limitations under the License.
  */
 
-import momentTz from 'moment-timezone';
-
 export * from './date-parser/date-parser';
 export * from './duration/duration';
 export * from './floor-shift-ceil/floor-shift-ceil';
 export * from './timezone/timezone';
 export * from './utils/utils';
-
-export const moment: any = momentTz;

src/timezone/timezone.ts

@@ -16,12 +16,13 @@
  */
 
 import { fromDate } from '@internationalized/date';
-import type { Instance } from 'immutable-class';
+
+import type { ImmutableClassInstance } from '../utils/utils';
 
 /**
  * Represents timezones
  */
-export class Timezone implements Instance<string, string> {
+export class Timezone implements ImmutableClassInstance<string, string> {
   static UTC: Timezone = new Timezone('Etc/UTC');
 
   private readonly timezone: string;

src/utils/utils.ts

@@ -14,6 +14,17 @@
  * limitations under the License.
  */
 
+/**
+ * Duck-type comptible interface for `Instance` from `immutable-class` to avoid
+ * adding it as a regular dependency.
+ */
+export interface ImmutableClassInstance<ValueType, JSType> {
+  valueOf(): ValueType;
+  toJS(): JSType;
+  toJSON(): JSType;
+  equals(other: ImmutableClassInstance<ValueType, JSType> | undefined): boolean;
+}
+
 export function isDate(d: any) {
   return !!(d && d.toISOString);
 }