js-fetch

This is a small library to make using JavaScript's fetch a bit easier. It provides some utility functions to handle common request types.

The library assumes that responses will be in JSON format. If a response is not going to be in that format, then you can still use the library, but most of its usefulness will be gone.

Also included are some HighPoint-specific requirements like CSRF support and postMessages to parent informing it that the user is actively using child.

Installation

yarn add @highpoint/js-fetch

Usage

GET request

import { json } from '@highpoint/js-fetch';

(async () => {
  try {
    const jsonResponse = await json('https://api.example.com');
    console.log(jsonResponse);
  } catch (e) {
    // Handle the exception
  }
})();

POST Form

import { postForm } from '@highpoint/js-fetch';

(async () => {
  try {
    const jsonResponse = await postForm('https://api.example.com', {
      body: 'value1=1&value2=2'
    });
    console.log(jsonResponse);
  } catch (e) {
    // Handle the exception
  }
})();

POST JSON

import { postJSON } from '@highpoint/js-fetch';

(async () => {
  try {
    const jsonResponse = await postJSON('https://api.example.com', {
      body: {
        value1: 1,
        value2: 2
      }
    });
    console.log(jsonResponse);
  } catch (e) {
    // Handle the exception
  }
})();

Using <base> HREF

...
<base href="https://ps.example.com/psc/csdev/EMPLOYEE/SA/s/WEBLIB.ISCRIPT1.FieldFormula.IScript_Main">
...

import { json } from '@highpoint/js-fetch';

(async () => {
  try {
    const jsonResponse = await json('TermOptions');
    console.log(jsonResponse);
  } catch (e) {
    // Handle the exception
  }
})();

GET request would be made to https://ps.example.com/psc/csdev/EMPLOYEE/SA/s/WEBLIB.ISCRIPT1.FieldFormula.IScript_TermOptions.

Overriding the <base> HREF

The baseURI of the page can be overridden for requests made using js-fetch. If the value window.highpoint.dataURI is added to the global javascript namespace of the window, that url will be used instead of the <base> of the page.