WIP (Completed! → https://gist.github.com/kaosf/d91c7a0ec8379f3d46eb05091fc2f078)

aikatsup.ts

const [keyword, type] = ["大空あかり", "キャラ"];
// const [keyword, type] = ["穏やかじゃない", "セリフ"]

import * as fs from "fs";
import * as path from "path";
import { parse } from "csv-parse/sync";

const source = path.join(__dirname, "aikatsup20230422.csv");
const buffer = fs.readFileSync(source);
const rows = parse(buffer, { relax_column_count: true }) as string[][];

let ids: string[] = [];
switch (type) {
  case "キャラ":
    ids = rows
      .filter((row) =>
        row.slice(4, row.length).find((column) => column === keyword)
      )
      .map((row) => row[0]);
    break;
  case "セリフ":
    const r = new RegExp(keyword);
    ids = rows.filter((row) => r.test(row[1])).map((row) => row[0]);
    break;
  default:
    process.exit(1);
}

console.log(ids);