A way to forget a variable in Node.js REPL?

[geeksilva97]

What is the problem this feature will solve?

It's just a tiny improvement for the REPL.

Take the following sample of REPL usage when a typo happened.

> const { DatabaseSync } = require('node:sqliite');
Uncaught Error [ERR_UNKNOWN_BUILTIN_MODULE]: No such built-in module: node:sqliite
    at Function._load (node:internal/modules/cjs/loader:1068:13)
    at TracingChannel.traceSync (node:diagnostics_channel:315:14)
    at wrapModuleLoad (node:internal/modules/cjs/loader:218:24)
    at Module.require (node:internal/modules/cjs/loader:1340:12)
    at require (node:internal/modules/helpers:141:16) {
  code: 'ERR_UNKNOWN_BUILTIN_MODULE'
}
> const { DatabaseSync } = require('node:sqlite');
Uncaught SyntaxError: Identifier 'DatabaseSync' has already been declared

Note that due to a typo, I can't use require again to import DatabaseSync. Instead, I usually close and open the reply.

What is the feature you are proposing to solve the problem?

Implementing a way to forget a variable would solve it.

The Erlang programming language doesn't allow reassignment, so a situation like the one described above might occur. To solve this, they have a utility function for forgetting a variable.

In the example below we can reuse Message after calling f(Message).

NOTE: That would be good. However, I don't know of a way to do this in the current REPL. Please let me know if there's one.

What alternatives have you considered?

Using let when importing in REPL :)

[bnoordhuis]

See #8309 (comment) - tl;dr known issue that is fixable but requires a lot of work and no one (to my knowledge) has stepped up so far.

Since this is a duplicate of an existing bug report, I'll go ahead and close it out.