Tagging

[AmaranthineCodices]

Lets you tag rendered Roact instances with Roact.Tag:

local function Test(props)
    return Roact.createElement("Frame", {
        BackgroundColor3 = props.backgroundColor,
        [Roact.Tag] = "Test"
    })
end

Currently needs lemur changes for unit tests to pass.

[LPGhatguy]

@tiffany352 mentioned that it would be useful to assign multiple tags to the same instance.

We could accomplish that with a key like Roact.Event:

Roact.createElement("Frame", {
    [Roact.Tag.Foo] = true,
    [Roact.Tag.Bar] = true,
})

We would choose this over a list of tags because:

• Diffing lists quickly is difficult
• Creating an extra table per render is heavy
• Accepting a string or list makes the API more confusing/complicated to implement