session-desktop/ts/util/lint/analyze_exceptions.ts

// tslint:disable no-console

import { join } from 'path';

import { fromPairs, groupBy, map } from 'lodash';

import { ExceptionType } from './types';
import { loadJSON } from './util';

const exceptionsPath = join(__dirname, 'exceptions.json');
const exceptions: Array<ExceptionType> = loadJSON(exceptionsPath);
const byRule = groupBy(exceptions, 'rule');

const byRuleThenByCategory = fromPairs(
  map(byRule, (list, ruleName) => {
    const byCategory = groupBy(list, 'reasonCategory');

    return [
      ruleName,
      fromPairs(
        map(byCategory, (innerList, categoryName) => {
          return [categoryName, innerList.length];
        })
      ),
    ];
  })
);

console.log(JSON.stringify(byRuleThenByCategory, null, '  '));