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export type Schema = {
type: 'number' | 'string' | 'array' | 'object' | any;
optional?: boolean;
items?: Schema;
properties?: Obj;
description?: string;
};
export type Obj = { [key: string]: Schema };
export type ObjType<s extends Obj> = { [P in keyof s]: SchemaType<s[P]> };
// https://qiita.com/hrsh7th@github/items/84e8968c3601009cdcf2
type MyType<T extends Schema> = {
0: any;
1: SchemaType<T>;
}[T extends Schema ? 1 : 0];
export type SchemaType<p extends Schema> =
p['type'] extends 'number' ? number :
p['type'] extends 'string' ? string :
p['type'] extends 'array' ? MyType<p['items']>[] :
p['type'] extends 'object' ? ObjType<p['properties']> :
any;
export function convertOpenApiSchema(schema: Schema) {
const x = JSON.parse(JSON.stringify(schema)); // copy
if (!['string', 'number', 'boolean', 'array', 'object'].includes(x.type)) {
x['$ref'] = `#/components/schemas/${x.type}`;
}
if (x.type === 'array' && x.items) {
x.items = convertOpenApiSchema(x.items);
}
if (x.type === 'object' && x.properties) {
x.required = Object.entries(x.properties).filter(([k, v]: any) => !v.isOptional).map(([k, v]: any) => k);
for (const k of Object.keys(x.properties)) {
x.properties[k] = convertOpenApiSchema(x.properties[k]);
}
}
return x;
}
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