Pulumi DynamoDB typescript error.

index.ts

import * as pulumi from "@pulumi/pulumi";
import * as aws from "@pulumi/aws";
import * as awsx from "@pulumi/awsx";

// Create an example table.
export const main_table = new aws.dynamodb.Table('main_table', {
	name: `main_table`,
	billingMode: 'PAY_PER_REQUEST',
	hashKey: 'type',
	rangeKey: 'date',
	attributes: [
		{
			name: 'type',
			type: 'S'
		},
		{
			name: 'date',
			type: 'S'
		}
	],
	serverSideEncryption: {enabled: true}
});

// Create a TableItem (throws error).
		const dynamoItem = new aws.dynamodb.TableItem(`record-${hash}`, {
			tableName: main_table.name,
			hashKey: main_table.hashKey,
			rangeKey: main_table.rangeKey,
			item: '{"type": {"S": "test"}, "date": {"S": "2021"}}'
		})

Original issue (with workaround) here: pulumi/pulumi-aws#1628