Reproduce issue with Postgres for Node when updating table

testRepro.js

/*
  This Node script reproduces an issue where, when passing numbers to an
  UPDATE SQL query in "pg", it complains that the values are of type
  text.
  There is an existing open issue at https://github.com/brianc/node-postgres/issues/2159
  which is similar but the query is different
*/
const pg = require("pg");

const pgConfig = {
  user: process.env.PGUSER,
  password: process.env.PGPASSWORD,
  host: process.env.PGHOST,
  port: process.env.PGPORT,
};

async function runTest() {
  const pgClient = new pg.Client(pgConfig);

  // Connect to the client
  await pgClient.connect();
  console.log("Connected to the database");

  try {
    await pgClient.query(`
    DROP TABLE IF EXISTS test_repro;
    CREATE TABLE test_repro (
      id BIGSERIAL PRIMARY KEY,
      num BIGINT
    );
  `);

    await pgClient.query(
      `
    UPDATE test_repro
      SET
        num = (
          CASE
            WHEN id = $1 then $2
          END
        )
      WHERE id in ($3)
  `,
      [1, 2, 1]
    );
  } finally {
    // Clean up
    await pgClient.query(`
          DROP TABLE IF EXISTS test_repro;
          `);
  }

  await pgClient.end();
}

runTest().then(() => {
  console.log("Complete");
  process.exit();
});