@eggjs/onerror/src/lib/utils.ts

error handler for egg

import path from 'node:path';
import { fileURLToPath } from 'node:url';
import type { Context, EggCore } from '@eggjs/core';
import type { OnerrorError } from 'koa-onerror';

export function detectErrorMessage(ctx: Context, err: OnerrorError) {
  // detect json parse error
  if (err.status === 400 &&
      err.name === 'SyntaxError' &&
      ctx.request.is('application/json', 'application/vnd.api+json', 'application/csp-report')) {
    return 'Problems parsing JSON';
  }
  return err.message;
}

export function detectStatus(err: OnerrorError) {
  // detect status
  let status = err.status || 500;
  if (status < 200) {
    // invalid status consider as 500, like urllib will return -1 status
    status = 500;
  }
  return status;
}

export function accepts(ctx: Context) {
  if (ctx.acceptJSON) return 'json';
  if (ctx.acceptJSONP) return 'js';
  return 'html';
}

export function isProd(app: EggCore) {
  return app.config.env !== 'local' && app.config.env !== 'unittest';
}

/**
 * Get the source directory name
 */
export function getSourceDirname() {
  if (typeof __dirname === 'string') {
    return path.dirname(__dirname);
  }
  // eslint-disable-next-line @typescript-eslint/ban-ts-comment
  // @ts-ignore
  const __filename = fileURLToPath(import.meta.url);
  return path.dirname(path.dirname(__filename));
}