"Biased Drive" bot for Grid Game KotH

bot.js

const turn = api.turn();
if (turn === 0) {
    this.generator = (function* () {
        yield* [[0, 30], [1, 30]];

        for (let i = 0; i < 10; ++i) {
            yield* [[3], [1, 2]];
        }

        for (let i = 0; i < 4; ++i) {
            yield* [[2], [0, 2]];
        }

        yield* [[2], [3, 4], [0, 4]];

        for (let i = 0; i < 4; ++i) {
            yield* [[2], [0, 2]];
        }

        yield* [[2], [3, 2], [0], [3, 2], [0], [3, 2], [0, 3]];

        while (true) {
            for (let i = 0; i < 100; ++i) {
                yield* [[2, 2], [1]];
            }
            for (let i = 0; i < 60; ++i) {
                yield* [[3, 2], [2]];
            }
            for (let i = 0; i < 100; ++i) {
                yield* [[0, 2], [3]];
            }
            for (let i = 0; i < 60; ++i) {
                yield* [[1, 2], [0]];
            }
        }
    })();

    this.nextCall = 0;
}
if (turn === this.nextCall) {
    const [dir, delay = 1] = this.generator.next().value;
    [api.awayX, api.awayY, api.towardsX, api.towardsY][dir].bind(api)();
    this.nextCall += delay;
}