Replace NNBSP with space. (#109)

Date.ts

@@ -22,14 +22,18 @@ export namespace Date {
 		return create(new globalThis.Date())
 	}
 	export function localize(value: Date | globalThis.Date, locale?: Locale, timezone?: string): Date {
-		return (is(value) ? parse(value) : value)
-			.toLocaleString(locale ? locale : Intl.DateTimeFormat().resolvedOptions().locale, {
-				year: "numeric",
-				month: "2-digit",
-				day: "2-digit",
-				timeZone: timezone ?? Intl.DateTimeFormat().resolvedOptions().timeZone,
-			})
-			.substring(0, 10)
+		return (
+			(is(value) ? parse(value) : value)
+				.toLocaleString(locale ? locale : Intl.DateTimeFormat().resolvedOptions().locale, {
+					year: "numeric",
+					month: "2-digit",
+					day: "2-digit",
+					timeZone: timezone ?? Intl.DateTimeFormat().resolvedOptions().timeZone,
+				})
+				.substring(0, 10)
+				// See DateTime:localize for note.
+				.replaceAll(" ", " ")
+		)
 	}
 	export function next(date: Date, days: number | DateSpan = 1): Date {
 		let result: Date

DateTime.spec.ts

@@ -106,14 +106,14 @@ describe("DateTime", () => {
 				expect(isoly.DateTime.localize(new Date(date[0])).split(" ")[1]).toEqual(date[1])
 			)
 		it("localize DateTime with locale", () => {
-			expect(isoly.DateTime.localize("2020-12-31T23:59:59.000Z", "en-US")).toEqual("01/01/2021, 12:59:59 AM")
+			expect(isoly.DateTime.localize("2020-12-31T23:59:59.000Z", "en-US")).toEqual("01/01/2021, 12:59:59 AM")
 		})
 
 		it("localize 2020-12-31T23:59Z to en-US", () => {
-			expect(isoly.DateTime.localize("2020-12-31T23:59Z", "en-US")).toEqual("01/01/2021, 12:59 AM")
+			expect(isoly.DateTime.localize("2020-12-31T23:59Z", "en-US")).toEqual("01/01/2021, 12:59 AM")
 		})
 		it("localize 2020-12-31T23Z to en-US", () => {
-			expect(isoly.DateTime.localize("2020-12-31T23Z", "en-US")).toEqual("01/01/2021, 12 AM")
+			expect(isoly.DateTime.localize("2020-12-31T23Z", "en-US")).toEqual("01/01/2021, 12 AM")
 		})
 		it('localize 2020-12-31T23:12Z to en-US { month: "short", day: "numeric", hour: "numeric", minute: "numeric" }', () => {
 			expect(
@@ -122,7 +122,7 @@ describe("DateTime", () => {
 					{ month: "short", day: "numeric", hour: "numeric", minute: "numeric" },
 					"en-US"
 				)
-			).toEqual("Jan 1, 12:12 AM")
+			).toEqual("Jan 1, 12:12 AM")
 		})
 		it('localize 2020-12-31T23:12Z to de-DE { month: "short", day: "numeric", hour: "numeric", minute: "numeric" }', () => {
 			expect(

DateTime.ts

@@ -105,7 +105,14 @@ export namespace DateTime {
 		let result: string
 		if (typeof locale == "object") {
 			const localeString = timeZone ? timeZone : Intl.DateTimeFormat().resolvedOptions().locale
-			result = (is(value) ? parse(value) : value).toLocaleString(localeString, locale)
+			result = (is(value) ? parse(value) : value)
+				.toLocaleString(localeString, locale)
+				// For consistency, replace NNBSP with space:
+				// Unicode has decided to use `Narrow No-Break Space (NNBSP)` (U+202F) instead of space in some cases.
+				// It breaks tests, when running in different environments.
+				// https://icu.unicode.org/download/72#:~:text=In%20many%20formatting%20patterns%2C%20ASCII%20spaces%20are%20replaced%20with%20Unicode%20spaces%20(e.g.%2C%20a%20%22thin%20space%22)
+				// This can be removed, with a breaking change and updated tests, when all systems use updated versions of ICU.
+				.replaceAll(" ", " ")
 		} else {
 			const precision = is(value) ? DateTime.precision(value) : "milliseconds"
 			result = localize(