Inferno.js memoization decorator function using NO_OP

main.coffee

memoize = require './memoize'

# By using memoize, the following functional component will only update
# when the props passed into it have changed. Please note that this assumes
# that the actual prop values are immutable objects, since we don't perform
# any deep equality checks.

logPanel = memoize ({log}) ->
  h '#log-panel', [
    for line in log
      h logLine, {line}
  ]

memoize.coffee

{ NO_OP } = require 'inferno'
equals = require 'shallow-equals'

module.exports = (fn) ->
  oldProps = null

  (props) ->
    if equals oldProps, props
      NO_OP
    else
      oldProps = props
      fn props