livebook/config/dev.exs

import Config

# For development, we disable any cache and enable code reloading.
#
# The watchers configuration can be used to run external
# watchers to your application. For example, we use it
# with webpack to recompile .js and .css sources.
config :livebook, LivebookWeb.Endpoint,
  # Binding to loopback ipv4 address prevents access from other machines.
  # Change to `ip: {0, 0, 0, 0}` to allow access from other machines.
  http: [ip: {127, 0, 0, 1}, port: 4000],
  code_reloader: true,
  debug_errors: true,
  check_origin: false,
  watchers: [
    node: [
      "node_modules/webpack/bin/webpack.js",
      "--mode",
      "development",
      "--watch",
      "--watch-options-stdin",
      cd: Path.expand("../assets", __DIR__)
    ]
  ]

config :livebook, :iframe_port, 4001
config :livebook, :shutdown_callback, {System, :stop, []}

# Feature flags
config :livebook, :feature_flags,
  hub: true,
  localhost_hub: true

# ## SSL Support
#
# In order to use HTTPS in development, a self-signed
# certificate can be generated by running the following
# Mix task:
#
#     mix phx.gen.cert
#
# Note that this task requires Erlang/OTP 20 or later.
# Run `mix help phx.gen.cert` for more information.
#
# The `http:` config above can be replaced with:
#
#     https: [
#       port: 4001,
#       cipher_suite: :strong,
#       keyfile: "priv/cert/selfsigned_key.pem",
#       certfile: "priv/cert/selfsigned.pem"
#     ],
#
# If desired, both `http:` and `https:` keys can be
# configured to run both http and https servers on
# different ports.

# Watch static and templates for browser reloading.
config :livebook, LivebookWeb.Endpoint,
  live_reload: [
    patterns: [
      ~r"tmp/static_dev/.*(js|css|png|jpeg|jpg|gif|svg)$",
      ~r"lib/livebook_web/(live|views)/.*(ex)$",
      ~r"lib/livebook_web/templates/.*(eex)$"
    ]
  ]

# Do not include metadata nor timestamps in development logs
config :logger, :console, format: "[$level] $message\n"

# Set a higher stacktrace during development. Avoid configuring such
# in production as building large stacktraces may be expensive.
config :phoenix, :stacktrace_depth, 20

# Initialize plugs at runtime for faster development compilation
config :phoenix, :plug_init_mode, :runtime

# Disable authentication mode during dev
config :livebook, :authentication_mode, :disabled

config :livebook, :data_path, Path.expand("tmp/livebook_data/dev")