convert from now() using Date to Moment Timezone from America/Los_Angeles

Question

I would like to know if it is possible in typescript to convert Date() to moment().tz("America/Los_Angeles").format();

I have tried

import { MomentTimezone }  from 'moment-timezone';
const moment : MomentTimezone = new MomentTimezone(Date(), "America/Los_Angeles");

but I have this error:

S2693: 'MomentTimezone' only refers to a type, but is being used as a value here

when doing

import * as moment from "moment-timezone";
let now = moment();

I have this error:

TS2349: This expression is not callable.   Type 'typeof import("C:/Users/sandro/IdeaProjects/booking/node_modules/moment/moment.d.ts")' has no call signatures.

and

const moment: MomentTimezone = {date: Date(), timezone: 'America/Los_Angeles'};

but I got

TS2322: Type '{ date: string; timezone: string; }' is not assignable to type 'MomentTimezone'.   Object literal may only specify known properties, and 'date' does not exist in type 'MomentTimezone'

Answer 1

The problem with this code—

import * as moment from "moment-timezone";

—is that in ES6, import * as moment syntax will always import moment as a non-callable module.

TypeScript used to be non-compliant, and let you call these imports anyway. But that won't fly in today's TS. Instead, we use the shorter:

import moment from "moment-timezone";

If you use that code then moment().tz("America/Los_Angeles").format() should work.

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See also:

• Understanding esModuleInterop in tsconfig file