jaydenseric

jaydenseric

// @ts-check

/**
 * A deferred promise that can be externally resolved or rejected.
 * @template [Resolves=void] What the promise resolves.
 */
export default class Deferred {
  constructor() {
    /** The promise. */
    this.promise = /** @type {Promise<Resolves>} */ (

jaydenseric

// @ts-check

/**
 * A deferred promise that can be externally resolved or rejected.
 * @template [Resolves=void] What the promise resolves.
 * @extends {Promise<Resolves>}
 */
export default class Deferred extends Promise {
  /** @typedef {(value: Resolves | PromiseLike<Resolves>) => void} Resolve */
  /** @typedef {(reason?: any) => void} Reject */

jaydenseric

import { fileURLToPath } from 'url';

const __dirname = fileURLToPath(new URL('./', import.meta.url));

jaydenseric

/**
 * Clears the window location hash (if present), without leaving a `#` on the
 * end of the URL, affecting page scroll, or causing the page to reload, whilst
 * allowing `hashchange` events to work. Only usable in a browser environment.
 *
 * Note: It’s debatable if a `hashchange` event should be fired when the old
 * URL has an empty `#` on the end, since `window.location.hash` will be the
 * same before and after; an empty string. This should be ok though as a native
 * link with `href="#"` triggers `hashchange` when the old URL has no hash.
 * @see [GitHub gist](https://gist.github.com/jaydenseric/7c8ac07a89fb6b8e7faa22e4808365e6).

jaydenseric

How to use a Zeit Now subdomain with a Heroku deployment

In the following steps replace:

• subdomain with your desired subdomain.
• domain.com with your domain.
• random.herokudns.com with your Heroku DNS target (see step 1).

1. In the Heroku deployment settings, under domains, click “Add domain”. Enter subdomain.domain.com to receive the random.herokudns.com Heroku DNS target.
2. In the Heroku deployment settings, under SSL certificates, ensure a certificate is automatically managed. If you don’t do this, attempting to visit https://subdomain.domain.com in a browser will fail with an SSL error.

jaydenseric

import React from 'react'
import { Query } from 'react-apollo'

export const DeferredQuery = ({ children, ...props }) => {
  const [skip, setSkip] = React.useState(true)
  const load = () => setSkip(false)
  return (
    <Query skip={skip} {...props}>
      {args => children({ ...args, load })}
    </Query>

jaydenseric

graphql-react options guide

This is a guide to the cache related options for the useGraphQL React hook. The reloadOnLoad and resetOnLoad options also apply to the GraphQL instance method operate.

Defaults

The defaults are suitable for typical query use, as apps tend to have more queries than mutations.

loadOnMount	loadOnReload	loadOnReset	reloadOnLoad	resetOnLoad

jaydenseric

import classNameProp from 'class-name-prop';
import { useRouter } from 'next/router';
import React from 'react';
import styles from './RouteIndicator.module.css';

const DONE_DURATION = 250;

export default function RouteIndicator() {
  const router = useRouter();

jaydenseric

import React from 'react'

export const useIsMounted = () => {
  const ref = React.useRef(false)
  const [, setIsMounted] = React.useState(false)
  React.useEffect(() => {
    ref.current = true
    setIsMounted(true)
    return () => (ref.current = false)
  }, [])