Run onMount before all other effects?

[Zooce]

Is is possible to get onMount to run before all other effects?

What I'm trying to do is set a few signals with some initial values on a component via props -- these initial values might change over time. This component is nested inside a <Show> tag and seems to be created every time it is shown - which is fine, but some of the other effects in the component are running before onMount and thus messing up the initialization I'm going for.

[Zooce]

So I didn't answer my own question exactly, but I found another way to do what I wanted -- instead of using onMount I'm using the initial values from props to set the initial values in the createSignals. For example:

function MyComponent(props) {
  const [a, b, c] = props.initialValues ? parseValues(props.initialValues) : [0, 0, 0];
  const [one, setOne] = createSignal(a);
  const [two, setTwo] = createSignal(b);
  const [six, setSix] = createSignal(c);
}

I also found out that another effect wasn't handling the undefined previous value of its first call, which also contributed to my trouble.