lefetmeofefet / htmel Goto Github PK

Currently when style tag content is updated, the whole css inside is recalculated, that's bad for performance.
Instead, it's possible to change the style object directory: styleTag.sheet.cssRules[0].style.color="red".
Use cases to cover:

• property value (green)
• property name (color)
• whole css line (color: green;)
• whole css selector content (color: green; font-size: 24px;)
• css selector (.things>#ikaramba)
• whole css rule (selector + content)
• multiple css rules

Support for the following syntax:

async function getStuff() {
  ...
}
html(state)`
<div>${() => getStuff()}</div>
`

Not sure how important this is as of now

Calling htmel a lot of times can become slow, especiall if we're updating a list frequently, causing the whole list to be calculated and each item in the list calls htmel.
Caching will save the extra time of processing the template. Basically, the flow is:

• htmel is called, check if cache contains the state object
• if contains, clone the existing template
• otherwise create a new template, and save to cache

Allow inserting a json object as attribute dict. example:

let attrs = {class: "classname", style: "color: red"}
htmel()`<div ${attrs}>this will be red</div>`

When overwriting list, instead of deleting the whole list and adding the new one, only apply the diff.
Possible ways to achieve this:

• compare references to the old list.
• special key prop