54 lines
1.6 KiB
TypeScript
54 lines
1.6 KiB
TypeScript
export type Schema = {
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type: 'boolean' | 'number' | 'string' | 'array' | 'object' | 'any';
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nullable: boolean;
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optional: boolean;
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items?: Schema;
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properties?: Obj;
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description?: string;
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example?: any;
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format?: string;
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ref?: string;
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enum?: string[];
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};
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type NonUndefinedPropertyNames<T extends Obj> = {
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[K in keyof T]: T[K]['optional'] extends true ? never : K
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}[keyof T];
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type UndefinedPropertyNames<T extends Obj> = {
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[K in keyof T]: T[K]['optional'] extends true ? K : never
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}[keyof T];
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type OnlyRequired<T extends Obj> = Pick<T, NonUndefinedPropertyNames<T>>;
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type OnlyOptional<T extends Obj> = Pick<T, UndefinedPropertyNames<T>>;
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export type Obj = { [key: string]: Schema };
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export type ObjType<s extends Obj> =
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{ [P in keyof OnlyOptional<s>]?: SchemaType<s[P]> } &
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{ [P in keyof OnlyRequired<s>]: SchemaType<s[P]> };
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// https://qiita.com/hrsh7th@github/items/84e8968c3601009cdcf2
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type MyType<T extends Schema> = {
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0: any;
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1: SchemaType<T>;
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}[T extends Schema ? 1 : 0];
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type NullOrUndefined<p extends Schema, T> =
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p['nullable'] extends true
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? p['optional'] extends true
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? (T | null | undefined)
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: (T | null)
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: p['optional'] extends true
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? (T | undefined)
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: T;
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export type SchemaType<p extends Schema> =
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p['type'] extends 'number' ? NullOrUndefined<p, number> :
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p['type'] extends 'string' ? NullOrUndefined<p, string> :
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p['type'] extends 'boolean' ? NullOrUndefined<p, boolean> :
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p['type'] extends 'array' ? NullOrUndefined<p, MyType<NonNullable<p['items']>>[]> :
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p['type'] extends 'object' ? NullOrUndefined<p, ObjType<NonNullable<p['properties']>>> :
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p['type'] extends 'any' ? NullOrUndefined<p, any> :
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any;
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