Type Alias IsJSONSerializable<T>

IsJSONSerializable: T extends JSONPrimitive
    ? true
    : T extends bigint
    | symbol
        ? false
        : T extends readonly (infer U)[]
            ? IsJSONSerializable<U>
            : T extends object
                ? false extends { [K in keyof T]: IsJSONSerializable<T[K]> }[keyof T]
                    ? false
                    : true
                : true

Type guard: detect whether a type is JSON serializable.

Type Parameters

T
Type to test

Remarks

Recursively inspects the structure of T to ensure all components are compatible with JSON serialization rules.

Loose check: functions are considered non-serializable, but JSON.stringify will allow them (they get stripped).

Will not detect cyclic references in objects.

Example

type A = IsJSONSerializable< { a: string; b: number[] } >;  // true
type B = IsJSONSerializable< symbol >;                      // false

Type Alias IsJSONSerializable<T>

Type Parameters

Remarks

Example

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