[RFC]: support auto-completion and completion previews after function executions in the REPL
kgryte opened this issue · 0 comments
Description
This RFC proposes adding support for auto-completion and completion previews after function executions in the REPL. The idea is that, for side-effect commands, we could eagerly evaluate and support TAB completion and the display of potential completions. E.g., consider
In [1]: [ 'foo', 'bar', 'beep' ].sort().fil<|>
where <|> is the cursor. In this example, after eager evaluation, we know that sort() returns the input array and thus we should be able to auto-complete filter.
One possibility which may not rely on eager evaluation for implementing this RFC is to take advantage of take advantage of our signature database (see https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/repl/signature), where we statically know output values. If a function/method returns a value having a specific type, we can then auto-complete based on the known properties/methods of that type.
Eager evaluation, however, would allow for result previews of chained commands and would also the need to analyze complex static AST graphs.
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