auto-token.js

var jwtTimeout = pm.environment.get("jwtTimeout") || 0;

if(new Date().getTime() > jwtTimeout) {
    pm.sendRequest({
        url: pm.environment.get("baseUrl") + '/api/v1/merchants/login',
        method: 'POST',
        header: {
            'content-type': 'application/json',
        },
        body: {
            mode: 'raw',
            raw: JSON.stringify({
              "email": "",
              "secretWord": "",
              "reCaptchaResponse": "captcha123"
            })
        }
    }, function (err, res) {
        pm.environment.set("jwtToken", "Bearer " + res.json().data.accessToken);
        pm.environment.set("jwtTimeout", new Date().getTime() + 250000);
    });
}