pesterhazy

This gist lists challenges you run into when building offline-first applications based on IndexedDB, including open-source libraries like Firebase, pouchdb and AWS amplify (more).

Note that some of the following issues affect only Safari. Out of the major browsers, Chrome's IndexedDB implementation is the best.

Backing file on disk (WAL file) keeps growing (Safari)

When this bug occurs, every time you use the indexeddb, the WAL file grows. Garbage collection doesn't seem to be working, so after a while, you end up with gigabytes of data.

Random exceptions when working with a large number of indexeddb databases (Safari)

alex-cory

#!/usr/bin/env bash
#
# BUGS:
# 1. not adding settings to .zshrc from below (i.e. default theme, packages, custom functions, etc.)
# 2. not auto-hiding doc
# 3. not auto-hiding menu bar
# 4. not adding .vimrc
# 5. not automatically copying iTerm profile, Option + Space not setup to toggle iTerm, doesn't default to opening iTerm at startup
#
# Bootstrap script for setting up a new OSX machine

morajabi

import { useLayoutEffect, useCallback, useState } from 'react'

export const useRect = (ref) => {
  const [rect, setRect] = useState(getRect(ref ? ref.current : null))

  const handleResize = useCallback(() => {
    if (!ref.current) {
      return
    }

egoens

Credit to answer found here http://stackoverflow.com/questions/21095054/ssh-key-still-asking-for-password-and-passphrase

This will ask you for the passphrase, enter it and it won't ask again.

ssh-add ~/.ssh/id_rsa &>/dev/null

Azerothian

// Babel 2015 - ES6
// Convert a complex JS Object to GraphQL Query, should handle most use cases as of 21/01/2016
const o = {
  query: {
    fields: {
      complex: {
        aliasFor: "Products",
        processArgs: {
          coupon: (value) => {
            return `"${JSON.stringify(value).replace(/"/g, "\\\"")}"`; // passing json string as a argument

inexorabletash

URLs into Indexed DB, via Service Workers

Let's say you're using Indexed DB for the offline data store for a catalog. One of the object stores contains product images. Wouldn't it be great if you could just have something like this in your catalog page?

<img src="indexeddb/database/store/id">

rafaeltuelho

Given an encoded (base64) JWT (access_token).

For example, see this sample OAuth2 response generated by JBoss APIMan/Keycloak

HTTP/1.1 200 OK
Connection: keep-alive
Content-Type: application/json
Date: Tue, 25 Aug 2015 19:25:12 GMT

revolunet

Python VS ES6 syntax comparison

Python syntax here : 2.7 - online REPL

Javascript ES6 via Babel transpilation - online REPL

Imports

import math

EdwardBetts

from pprint import pformat
from typing import Any

from pygments import highlight
from pygments.formatters import Terminal256Formatter
from pygments.lexers import PythonLexer


def pprint_color(obj: Any) -> None:
    """Pretty-print in color."""

codeinthehole

#!/usr/bin/env bash
# 
# Bootstrap script for setting up a new OSX machine
# 
# This should be idempotent so it can be run multiple times.
#
# Some apps don't have a cask and so still need to be installed by hand. These
# include:
#
# - Twitter (app store)