Type Alias CamelCasedPropertiesDeep<Value, Options>

CamelCasedPropertiesDeep: Value extends Function
    ? Value
    : Value extends (infer U)[]
        ? CamelCasedPropertiesDeep<U, Options>[]
        : Value extends Set<infer U>
            ? Set<CamelCasedPropertiesDeep<U, Options>>
            : {
                [K in keyof Value as CamelCase<K, Options>]: CamelCasedPropertiesDeep<
                    Value[K],
                    Options,
                >
            }

Convert object properties to camel case recursively.

This can be useful when, for example, converting some API types from a different style.

Type Parameters

  • Value
  • Options extends CamelCaseOptions = { preserveConsecutiveUppercase: true }

See

  • CamelCasedProperties
  • CamelCase

Example

import type {CamelCasedPropertiesDeep} from 'type-fest';

interface User {
	UserId: number;
	UserName: string;
}

interface UserWithFriends {
	UserInfo: User;
	UserFriends: User[];
}

const result: CamelCasedPropertiesDeep<UserWithFriends> = {
	userInfo: {
		userId: 1,
		userName: 'Tom',
	},
	userFriends: [
		{
			userId: 2,
			userName: 'Jerry',
		},
		{
			userId: 3,
			userName: 'Spike',
		},
	],
};

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