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January 9th, 2023 × #TypeScript#JavaScript#Web Development

TypeScript Fundamentals × Satisfies and as const

Scott and Wes discuss new TypeScript techniques like 'as const' to create frozen read-only types from data and 'satisfies' to allow better inference for unknown metadata objects.

Wes Bos

Wes Bos Host

Scott Tolinski

Scott Tolinski Host

or
Show Notes Transcript

In this Hasty Treat, Scott and Wes talk about Satisfies and as const.

Show Notes

export const currencies = {
USD: 'US Dollars',
CAD: 'Canadian Dollar',
EUR: 'Euro',
} as const;

export type Currency = typeof currencies;
export type CurrencyCode = keyof Currency;

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