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) {
var results = await SafePromise.run(promise);
if (results.isError) { throw new Error(results.error); }

const result = results.value;
/* do other stuff now... */
}
}

> Written with StackEdit.