| 1 | /**
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| 2 | * This utility type forms an object type of `Options` by taking values from
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| 3 | * `OverrideOptions`. If a value is not defined in `OverrideOptions`, the
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| 4 | * utility type takes the value from `DefaultOptions`.
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| 5 | *
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| 6 | * The utility type intentionally restricts:
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| 7 | * - `Options` to be required to know the object type form.
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| 8 | * - `OverrideOptions` to be partial to make empty object assignable to it.
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| 9 | * - `DefaultOptions` to be required to have fallback values for every property.
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| 10 | */
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| 11 | export type CreateTypeOptions<
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| 12 | Options extends Required<Options>,
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| 13 | OverrideOptions extends Partial<Options>,
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| 14 | DefaultOptions extends Required<Options>,
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| 15 | > = {
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| 16 | [Key in keyof Options]: OverrideOptions[Key] extends Options[Key] ? OverrideOptions[Key] : DefaultOptions[Key];
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| 17 | };
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