prisma-markdown/src/utils/PrismaUtil.ts

Prisma Markdown documents generator including ERD diagrams and comment descriptions

import { DMMF } from "@prisma/generator-helper";

export namespace PrismaUtil {
  export const tagValues =
    (kind: string) =>
    (model: DMMF.Model | DMMF.Field): string[] => {
      if (!model.documentation?.length) return [];

      const output: string[] = [];
      const splitted: string[] = model.documentation
        .split("\r\n")
        .join("\n")
        .split("\n");
      for (const line of splitted) {
        const first: number = line.indexOf(`@${kind} `);
        if (first === -1) continue;

        output.push(line.slice(first + kind.length + 2).trim());
      }
      return output.map((str) => str.trim()).filter((str) => !!str.length);
    };
}