dj dennisja

🕊️

I have learned that I have a lot to learn

I have learned that I have a lot to learn.

dennisja / snakeToCamelCase.ts

Created April 27, 2023 17:47

A typescript generic that converts object keys from snake to camelCase

	type SnakeToCamelCase<
	SnakeCaseWord extends string,
	Result extends string = ''
	> = Uncapitalize<
	SnakeCaseWord extends `${infer Head}_${infer Tail}`
	? SnakeToCamelCase<Tail, `${Result}${Capitalize<Head>}`>
	: `${Result}${Capitalize<SnakeCaseWord>}`
	>;

	type CamelCaseObjectTypes<O extends object> = {

dennisja / objects.js

Last active June 7, 2019 19:46

Implements and uses functions to calculate the averageRanking of objects and to sort objects by ranking

	/**
	* Sorts an array of object by ranking
	* @param {array} objects The array containing objects to sort by ranking
	*/
	function orderByRanking(objects) {
	return objects.sort((a, b) => a.ranking - b.ranking);
	}

	/**
	* Calculates the average ranking of objects

dennisja / pluralsight video downloader.js

Last active April 17, 2020 12:23

A simple script to download pluralsight courses in the browser console.

	// open all sections
	$$('section.module:not(.open) header').forEach((h) => h.click());

	// get all list course videos in each section
	let listItems = $$('section.module li');

	// download them
	for (let i = 0; i < listItems.length; i++) {
	let listItem = listItems[i];
	let title = listItem.querySelector('h3').textContent;

dennisja / 1.js

Created March 5, 2019 08:28 — forked from getify/1.js

creating hard-bound methods on classes

	class Foo {
	constructor(x) { this.foo = x; }
	hello() { console.log(this.foo); }
	}

	class Bar extends Foo {
	constructor(x) { super(x); this.bar = x * 100; }
	world() { console.log(this.bar); }
	}

dennisja / currency.sql

Created December 30, 2018 12:53 — forked from allanlaal/currency.sql

SQL table of World currencies (even some expired ones) Source: http://bcmoney-mobiletv.com/blog/2008/12/30/currency-codes-dropdown-and-sql-table/ Cleaned up a bit, uses InnoDB and iso currency code as the PRIMARY key

	--
	-- Table structure for table `currency`
	--

	CREATE TABLE IF NOT EXISTS `currency` (
	`iso` char(3) CHARACTER SET utf8 NOT NULL DEFAULT '',
	`name` varchar(200) COLLATE utf8_unicode_ci NOT NULL,
	PRIMARY KEY (`iso`),
	UNIQUE KEY `name` (`name`)
	) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

dennisja / testing-final-state-query.js

Created November 18, 2018 18:53

	import React from "react";
	// get the MockedProvider from react-apollo/test-utils
	import { MockedProvider } from "react-apollo/test-utils";
	import { cleanup, render } from "react-testing-library";

	import UsersList, { GET_USERS_QUERY } from "./UserList";
	describe("UserList component", () => {
	afterEach(cleanup);

	const request = {

dennisja / loading-state.js

Created November 18, 2018 18:35

	it('should render the loading component', () => {
	const { getByText } = render(
	// pass empty array to mocks prop
	<MockedProvider mocks={[]}>
	<UsersList />
	</MockedProvider>
	);
	// find loading component by text
	const loader = getByText(/Loading/);
	// check whether that it renders the right content

dennisja / using-mocked-provider.js

Last active November 18, 2018 18:33

	import React from "react";
	// get the MockedProvider from react-apollo/test-utils
	import { MockedProvider } from "react-apollo/test-utils";
	import { cleanup, render } from "react-testing-library";

	// get the UserList component and GET_USERS_QUERY
	// if the UserList file is in the same direcory as a file with the file containing the tests
	import UsersList, { GET_USERS_QUERY } from "./UserList";

	describe("UserList component", () => {

dennisja / rendering-in-a-provider.js

Last active November 18, 2018 16:14


	import { render } from 'react-testing-library';
	import { ApolloProvider } from 'react-apollo';
	import client from './apolloClient';

	describe("UserList component", () => {

	it("should render the list of users", () => {
	// try rendering the UserList component in an ApolloProvider
	const { getByText } = render(

dennisja / rendering-outside-provider.js

Created November 18, 2018 15:52

	import { render } from 'react-testing-library';

	describe("UserList component", () => {

	it("should render the list of users", () => {
	// try rendering the UserList component
	const { getByText } = render(<UsersList />);
	});

	});