Collapse ecmascript.ts container. (#57)

* Collapse ecmapscript container object and export individual functions
instead.

Author: 12wrigja

index.d.ts

@@ -814,7 +814,7 @@ export namespace Temporal {
       one: Temporal.PlainDate | PlainDateLike | string,
       two: Temporal.PlainDate | PlainDateLike | string
     ): ComparisonResult;
-    constructor(isoYear: number, isoMonth: number, isoDay: number, calendar?: CalendarProtocol);
+    constructor(isoYear: number, isoMonth: number, isoDay: number, calendar?: CalendarProtocol | string);
     readonly era: string | undefined;
     readonly eraYear: number | undefined;
     readonly year: number;
@@ -937,7 +937,7 @@ export namespace Temporal {
       millisecond?: number,
       microsecond?: number,
       nanosecond?: number,
-      calendar?: CalendarProtocol
+      calendar?: CalendarProtocol | string
     );
     readonly era: string | undefined;
     readonly eraYear: number | undefined;

lib/calendar.ts

@@ -1,5 +1,5 @@
 import { DEBUG } from './debug';
-import { ES } from './ecmascript';
+import * as ES from './ecmascript';
 import { GetIntrinsic, MakeIntrinsicClass, DefineIntrinsic } from './intrinsicclass';
 import {
   CALENDAR_ID,

lib/duration.ts

@@ -1,5 +1,5 @@
 import { DEBUG } from './debug';
-import { ES } from './ecmascript';
+import * as ES from './ecmascript';
 import { MakeIntrinsicClass } from './intrinsicclass';
 import {
   YEARS,
@@ -389,7 +389,7 @@ export class Duration implements Temporal.Duration {
 
     if (options === undefined) throw new TypeError('options argument is required');
     options = ES.GetOptionsObject(options);
-    const unit = ES.ToTemporalDurationTotalUnit(options, undefined);
+    const unit = ES.ToTemporalDurationTotalUnit(options);
     if (unit === undefined) throw new RangeError('unit option is required');
     const relativeTo = ES.ToRelativeTemporalObject(options);