sebastiankade

export type TZDate = `${number}-${number}-${number}Z`;
export type TZDateTime =
  | `${number}-${number}-${number}T${number}:${number}:${number}Z`
  | `${number}-${number}-${number}T${number}:${number}:${number}.${number}Z`;

export type CalDate = `${number}-${number}-${number}`;
export type CalDateTime =
  | `${number}-${number}-${number}T${number}:${number}:${number}`
  | `${number}-${number}-${number}T${number}:${number}:${number}.${number}`;

sebastiankade

Principles

• JS Date object is magic (magic is bad)
• We prefer to separate data from logic
• Side effects are bad (FP)
• Timezones are not as confusing as we have made them

Mental Model

First, a new mental model for thinking about dates (yes dates include datetimes).

1. Calendar Dates

sebastiankade

Modern ID Spec

An adaptable, human-friendly, web-safe, unique ID spec for modern applications.

Guiding Principles

• Short
• Human friendly
• URL-safe
• Developer experience

sebastiankade

find src/ -name "lib.ts" -exec sh -c 'mv "$0" "${0%lib.ts}utils.ts"' {} \;

sebastiankade

  website {
    index_document = "index.html"
    error_document = "error.html"

    routing_rules = <<EOF
[{
    "Condition": {
        "HttpErrorCodeReturnedEquals": "404",
        "KeyPrefixEquals": ""

sebastiankade

import * as util from "util";

type Maybe<T> = T | undefined | null;

export function promisify<Args, R>(
  fn: (arg: Args, callback: (e: Maybe<Error>, result: R) => void) => void,
  self?: any
): (arg: Args) => Promise<R> {
  return util.promisify(fn).bind(self);
}

sebastiankade

// Serverless.yml
functions:
  myCloudWatch:
    handler: myCloudWatch.handler
    events:
      - cloudwatchEvent:
          event:
            source:
              - "aws.mediaconvert"
            detail-type:

sebastiankade

export const getVideoDuration = async (file) =>
  new Promise((resolve, reject) => {
    const mediaType = file.type.split("/")[0];
    if (mediaType === "video" || mediaType === "audio") {
      var video = document.createElement(mediaType);
      video.preload = "metadata";
      video.onloadedmetadata = function() {
        window.URL.revokeObjectURL(video.src);
        resolve(video.duration);
      };

sebastiankade

// export the default export of a legacy (`export =`) module
export import MessageBase = require('./message-base');

// export the default export of a modern (`export default`) module
export { default as MessageBase } from './message-base';

// export an interface from a legacy module
import Types = require('./message-types');
export type IMessage = Types.IMessage;

sebastiankade

'body':
  'cmd-shift-down': 'window:focus-next-pane'
  'cmd-shift-up': 'window:focus-previous-pane'
  'cmd-ctrl-right': 'window:focus-next-pane'
  'cmd-ctrl-left': 'window:focus-previous-pane'
'.platform-darwin':
  'shift-cmd-alt-right': 'move-panes:move-next'
  'shift-cmd-alt-left': 'move-panes:move-previous'
  'shift-cmd-S': 'project-find:show'
  'cmd-shift-o': 'fuzzy-finder:toggle-file-finder'