parseDates() formatting not working

I’m using the data-forge-ts library in an Angular project and I’m unable to get the date to convert to the desired format. I’m not sure if I’m doing something wrong or if there’s an issue with the library.

A minimal example is here:

https://stackblitz.com/edit/date-sandbox-data-forge-ts?file=app/app.component.ts

The input date format is:

"03/01/2021"

This line of code:

const df = idf.parseDates("date");

results in a date that looks like:

Mon Mar 01 2021 00:00:00 GMT-0600 (Central Standard Time)

This line of code:

const df = idf.parseDates("date", "YYYY-MM-DD");

results in

Invalid Date

[ashleydavis]

That’s a good assumption.

By the way thanks for providing the sample code, that makes it really easy to give help.

[tunneling]

So in my real application, I’m acquiring a list of transactions from a nestjs backend and the date format is as it comes from MySQL (e.g. 2020-07-19). I’m trying to build an interface that can provide different views of the data. I’m hoping that I can use data-forge to manipulate the DataFrame to different formats. For example, the real data would have some value (e.g. dollars) as a series in the dataframe. I would like to manipulate the dataframe from a transaction list to a time table (with the dates as series). In addition, I would like to be able to change the resolution of the date series (e.g. daily, weekly, bi-weekly, etc.). I have no idea how to do any of that yet, but I was assuming my string dates need to be typed as dates.