Algorithm as figure

To make algorithms referencable and being able to float in the document, you can use Typst’s #figure function with a custom kind.

#figure(
  kind: "algorithm",
  supplement: [Algorithm],
  caption: [My cool algorithm],

  pseudocode-list[
    + do something
    + do something else
    + *while* still something to do
      + do even more
      + *if* not done yet *then*
        + wait a bit
        + resume working
      + *else*
        + go home
      + *end*
    + *end*
  ]
)

Numbered title

If you want to have the algorithm counter inside the title instead (see previous section), there is the option numbered-title:

#figure(
  kind: "algorithm",
  supplement: [Algorithm],

  pseudocode-list(booktabs: true, numbered-title: [My cool algorithm])[
    + do something
    + do something else
    + *while* still something to do
      + do even more
      + *if* not done yet *then*
        + wait a bit
        + resume working
      + *else*
        + go home
      + *end*
    + *end*
  ]
) <cool>

See @cool for details on how to do something cool.

Note that the numbered-title option only makes sense when nesting your pseudocode inside a figure with kind: "algorithm", otherwise it produces undefined results.