What should we do if we have a variable whose value we dont know what it will be ?

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TypeScript Types typescript-definitions schema-validation Validation

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  • type-fest

    A collection of essential TypeScript types

    • You could the appropriate JSON type provided by Type Fest (or similar libraries, or roll your own).

  • io-ts

    Runtime type system for IO decoding/encoding

    • The thing you're looking for is a library like zod or io-ts, which allow you to build arbitrarily complex type guards, without having to separately declare a matching type or interface. TypeScript infers the type from the type checker.

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  • zod

    TypeScript-first schema validation with static type inference

    • The thing you're looking for is a library like zod or io-ts, which allow you to build arbitrarily complex type guards, without having to separately declare a matching type or interface. TypeScript infers the type from the type checker.

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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