Merge branch 'main' into soundtrack-type-title-detection

Author: gustavkj

harmonizer/properties.ts

@@ -1,12 +1,12 @@
 import type { HarmonyRelease, HarmonyTrack } from './types.ts';
 
 /** Release properties which can be combined from data of multiple providers. */
-export const combinableReleaseProperties: Array<keyof HarmonyRelease> = [
+export const combinableReleaseProperties = [
 	'externalLinks',
 	'availableIn',
 	'excludedFrom',
 	'info',
-];
+] as const satisfies Array<keyof HarmonyRelease>;
 
 /**
  * Release properties which have to be taken from one provider and can not be combined from data of multiple providers.
@@ -27,15 +27,15 @@ export const immutableReleaseProperties = [
 	'images', // TODO: make images combinable? combine if not only front covers?
 	'copyright',
 	'credits',
-] as const;
+] as const satisfies Array<keyof HarmonyRelease>;
 
 /** Track properties which have to be taken from one provider and can not be combined from data of multiple providers. */
 export const immutableTrackProperties = [
 	'isrc',
 	'length',
-] as const;
+] as const satisfies Array<keyof HarmonyTrack>;
 
 /** Track properties which can be combined from data of multiple providers. */
-export const combinableTrackProperties: Array<keyof HarmonyTrack> = [
+export const combinableTrackProperties = [
 	'recording',
-];
+] as const satisfies Array<keyof HarmonyTrack>;

utils/record.ts

@@ -1,6 +1,9 @@
 /** Clones properties between records of the same type. Creates a deep copy if necessary. */
 export function cloneInto<T>(target: T, source: T, property: keyof T) {
 	let value = source[property];
+	if (value === undefined) {
+		return value;
+	}
 	if (typeof value === 'object' && value !== null) {
 		value = structuredClone(value);
 	}
@@ -9,7 +12,11 @@ export function cloneInto<T>(target: T, source: T, property: keyof T) {
 
 /** Copies properties between records of the same type. Helper to prevent type errors. */
 export function copyTo<T>(target: T, source: T, property: keyof T) {
-	return target[property] = source[property];
+	const value = source[property];
+	if (value === undefined) {
+		return value;
+	}
+	return target[property] = value;
 }
 
 /** Filters the error entires of the given record and creates a new error-free record. */