typia/src/programmers/internal/application_plugin.ts

Superfast runtime validators with only one line

import { IMetadataTypeTag } from "../../schemas/metadata/IMetadataTypeTag";

/**
 * @internal
 */
export const application_plugin = <Schema extends object>(
  schema: Schema,
  tags: IMetadataTypeTag[][],
): Schema[] => {
  const plugins: IMetadataTypeTag[][] = tags
    .map((row) => row.filter((t) => t.schema !== undefined))
    .filter((row) => row.length !== 0);
  if (plugins.length === 0) return [schema];
  return plugins.map((row) => {
    const base: Schema = { ...schema };
    for (const tag of row) Object.assign(base, tag.schema);
    return base;
  });
};