[Meta] Things to consider before Solid v2

[titoBouzout]

Thinking out loud, mostly personal notes and wishes. May edit to link/add references.

• non-destructive renderer #388 /cc @mdynnl
• handle moving nodes #382
• maybe compile Dynamic https://hackmd.io/@0u1u3zEAQAO0iYWVAStEvw/B1wJbD9Ogx
• Merge more sibling templates #458
• special case value, selected, checked, muted, etc or maybe use controlled inputs to opt-in into "special case" https://discord.com/channels/722131463138705510/817960620736380928/1434951587012415582
• may add an attribute validator for dev mode
• maybe connected={[fn1, fn2]} as a replacement for onMount
• remove use: and make of ref={[fn1, fn2]} an array, remove magic refs https://discord.com/channels/722131463138705510/1435384712443990096 [next] ref accepts arrays #475
• somehow spreads in elements and also duplicated attributes should be merged. target solid v2. [next] deopt spreads in DOM #472
• need to use evaluate.confident more (inline style example) Inline styles corrupted when using clamp() solidjs/solid#2540 done in Inline in template value in style objects using evaluate().confident #461
• data-hk attribute in markup should prevent compilation Warn when data-hk attribute is present on a template #459
• Invalid double escaping of nested arrays in SSR #393 avoid double escaping array in ssr, fixes #393 #444
• crazy idea /* @once */ can maybe be compiled to a wrapping untrack, so no more issues with objects, etc Fix edge cases for /* @once */ static marker #438
• search for TODO in source code and deal with it - an onclick messing test cases comes to mind remove condition that changed too many tests #443
• inline/merge more stuff, we are incredible performant, but there may be some situation on which we can do better. Example, may no need for this setProperty https://playground.solidjs.com/anonymous/45cac790-de70-469e-aa76-db6336b874d1 https://discord.com/channels/722131463138705510/1023298332338167919/1377604763495039046 inline style when is an object of string/numeric values #441
• do not inline properties even if the value is a string
• make result smaller by importing helpers, instead of node.style.setProperty( may use setStyleProperty(node..) Make "style set property" code smaller #440
• bool: and attr: could be removed. We already default to attributes and by default we also add/remove attributes based on boolean value. next: Default to attributes  #422
• validator of tags should be lowercased, foreignObject gets lowercased for whatever reason ignore case when validating tag nesting #428
• do not use properties without prefix prop: - except for value and friends this can be considered done

discarded/non-issue/carried by someone else:

• delegated events do node retargeting - this is expected for delegated events, we have native events so shouldn't be an issue.
• event handlers are not batched - solid v2 doesn't suffer from this problem and changing this in solid v1 would be a breaking change
• WIP - WIP: tagged template literals runtime based on pota.quack.uy #448 - Not sure if It's going to make it to Solid 2.x, but one can dream, implement pota html function as ak solid-html package. We have lit-dom-expressions but it's a very weird syntax and has some/lots of issues. pota html function is inspired by Solid, It's pretty much JSX in an XML string (not weird lit-html stuff) behind the scenes uses h but we can make it performant, see https://github.com/potahtml/pota/blob/master/src/core/xml.js , for example this https://pota.quack.uy/playground#H4sIAHDMUmgAA2VQ22rDMAz9FS0UkoyuYd1bSfqyy9vYB8yDlVglZo5kbLMVQv59cpqWlurFwueiI2Wmd+wjDOCRNHoYYe+5h9xx3OWKzvCht1dYJR+CK5J3pXFvCIsBIoa4gaKEZgt5h9Yy/LG3+i6Hsbxhv3y8vx6cxxAMU9iA8+xCkk7NKppocda1QoiTPTQpy7eiWpvfrSKQqq+dYFI2KntmiU9Ikkll1YmcdJr7B7xQeG5/Ql0lCGbaG3vAXduJz2L4fFzCeglPX6PKZp9Ui6HtjNVyuxT73N/DepxdKrE5DU7xq+R/HKRItlB0PHyRwDL7B5nCtW2QAQAA /cc @trusktr
• prevent directives from being treeshaked, or maybe move the function to the array The issue seemed to be just eslint. eslint-plugin-solid fixes it.
• [main] adds ref: namespace #445 https://discord.com/channels/722131463138705510/1435384712443990096

If there is anything you want/wish for Solid 2, I would like to hear it, so please feel free to comment, we may influence. Keep in mind I'm a collaborator and decisions are not on me.

[lxsmnsyc]

crazy idea /* @once */ can maybe be compiled to a wrapping untrack, so no more issues with objects, etc

might be too sugar-y.

[titoBouzout]

crazy idea /* @once */ can maybe be compiled to a wrapping untrack, so no more issues with objects, etc

might be too sugar-y.

Right, one can just import untrack, makes me think we may should just remove /* @once */, I lack taste for stuff that works only "sometimes".

[lxsmnsyc]

@titoBouzout we can't really remove /* @once */ because it serves a purpose untrack can't really fulfill (which is skipping getters).

Was there really an issue with it though? I probably missed something.

[kachurun]

Non-destructive render, please, I need this so bad 🙏