Rolesville Software LLC - Tool

NPM module containing routine and shared components for Angular and NodeJS programs and components writen by Roleville Software LLC.

Installation

npm install --save @rolesvillesoftware/tools

isNumeric

Checks to verify if an object is numeric or not.

import { isNumeric } from "@rolesvillesoftware/tools/dist";
describe("Test isNumber", () => {
    it("test", () => {
        expect(isNumeric("32342")).toBeTruthy();
        expect(isNumeric("234A23")).toBeFalsy();
    });
});

SafePromise

SafePromise was designed to properly handle async and await in TypeScript and to reduce the warnings that are given when a promise is not properly caught. This was written by our team to have a common way to report successful and error promises.

import { SafePromise } from "@rolesvillesoftware/tools/dist";

describe("Test SafePromise", () => {
  it("Test Successful", done => {
    SafePromise.run(() => Promise.resolve(true))
      .then(data => {
        expect(data.isError).toBeFalsy();
        expect(data.isSuccessful).toBeTruthy();

        const results = data.value;
        expect(data.value).toBeTruthy();
        done();
      })
      .catch(error => fail);
  });

  it("Test Failure", done => {
    SafePromise.run(() => Promise.reject("some error")).then(data => {
      expect(data.isError).toBeTruthy();
      expect(data.isSuccessful).toBeFalsy();

      const error = data.error;
      const results = data.value;

      expect(results).toBeNull();
      expect(error).toEqual("some error");
      done();
    });
  });
});

Using within TypeScript:

import { SafePromise } from "@rolesvillesoftware/tools/dist";

export class SafePromiseExample {

    public async doSomething(promise: () => Promise<any>) {
        var results = await SafePromise.run(promise);
        if (results.isError) { throw new Error(results.error); }
        
        const result = results.value;
        /*** do other stuff now... */
    }
}

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