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Andrew Scott a08ea3f643 refactor(router): Make a few adjustments to createUrlTree for clarity (#45306)
* `tree` function now accepts the old root rather than the old
  `UrlTree`. The `urlTree` argument was only used to get the `root`.
  This change makes it more clear what that pararmeter is used for and
  what's actually being used
* Move the `oldRoot` (previously `urlTree`) to be the first argument of `tree`.
  This change now mirrors the argument order for `replaceSegment` and
  can be read from left to right more easily "in this root,
  replace this old segment group with this new segment group".
* Extract `newRoot` to a variable. This just makes it more clear what's
  going on at the end rather than combining a bunch of operations into
  one.

These changes are being made so that hopefully a future refactor can be
done which does not rely on the `urlTree` argument at all in the
`createUrlTree` function. These refactorings will make it easier to see
1:1 functionlity in these various places.

PR Close #45306
2022-03-09 13:52:38 -08:00
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Angular

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License: MIT