How to use an I2C chip? (Adafruit MMA8451)

I have rewritten my code and cleaned it up a bit, but it still gives the same values as in my previous post

export default class MMA8451 {

  // @ts-ignore
  i2c: I2C = new I2C();
  MMA8451_ADDR = 0x1D;
  MMA8451_REG_OUT_X_MSB = 0x01 //!< Read-only device output register
  MMA8451_REG_PL_CFG = 0x11 //!< Portrait/landscape configuration register
  MMA8451_REG_CTRL_REG1 = 0x2A //!< CTRL_REG1 system control 1 register
  MMA8451_REG_CTRL_REG2 = 0x2B //!< CTRL_REG2 system control 2 register
  MMA8451_REG_CTRL_REG4 = 0x2D //!< CTRL_REG4 system control 4 register
  MMA8451_REG_CTRL_REG5 = 0x2E //!< CTRL_REG5 system control 5 register

  writeRegister8(reg: number, value: number) {
    this.i2c.writeTo(this.MMA8451_ADDR, [reg, value]);
  }

  readRegister8(reg: number) {
    this.i2c.writeTo(this.MMA8451_ADDR, reg);
    return this.i2c.readFrom(this.MMA8451_ADDR, 1)[0];
  }


  begin() {
    // @ts-ignore
    this.i2c.setup({ scl: B6, sda: B7 });
    this.writeRegister8(this.MMA8451_REG_CTRL_REG2, 0x40)// reset

    setTimeout(() => {
      this.begin2();
    }, 500);
  }

  begin2() {
    this.writeRegister8(0x0E, 0b01); // enable 4G range
    this.writeRegister8(this.MMA8451_REG_CTRL_REG2, 0x02); // High res

    // DRDY on INT1
    this.writeRegister8(this.MMA8451_REG_CTRL_REG4, 0x01);
    this.writeRegister8(this.MMA8451_REG_CTRL_REG5, 0x01);

    // Turn on orientation config
    this.writeRegister8(this.MMA8451_REG_PL_CFG, 0x40);

    // Activate at max rate, low noise mode
    this.writeRegister8(this.MMA8451_REG_CTRL_REG1, 0x01 | 0x04);
  }

  logIt() {
    this.i2c.writeTo(this.MMA8451_ADDR, this.MMA8451_REG_OUT_X_MSB);
    let buffer = this.i2c.readFrom(this.MMA8451_ADDR, 6);

    let x = buffer[0];
    x <<= 8;
    x |= buffer[1];
    x >>= 2;
    let y = buffer[2];
    y <<= 8;
    y |= buffer[3];
    y >>= 2;
    let z = buffer[4];
    z <<= 8;
    z |= buffer[5];
    z >>= 2;

    const divider = 2048;
    let x_g = x / divider;
    let y_g = y / divider;
    let z_g = z / divider;

    console.log('x_g', x_g, 'y_g', y_g, 'z_g', z_g);
    console.log('buffer', buffer);
  }
}