is this possible with webpack AliasPlugin to automatically switch to a different alias when original file is deleted?

[latel]

is it possible, if both folder src/servers/overrides/server and Proto/ProtoCPP/HEAD/Proto/server have same file ABC.ts, when I delete src/servers/overrides/server/ABC.ts, webpack automatically use Proto/ProtoCPP/HEAD/Proto/server/ABC.ts

configureWebpack: {
        resolve: {
            plugins: [
                // @see https://github.com/webpack/webpack/issues/6817#issuecomment-542448438
                new AliasPlugin(
                    'described-resolve',
                    [
                        {
                            name: '%',
                            alias: [resolve('src/servers/overrides'), resolve('Proto/ProtoCPP/HEAD/Proto')],
                        },
                    ],
                    'resolve'
                ),
            ],
        },
    },

currently when I delete src/servers/overrides/server/ABC.ts, webpack throws ENOENT errors like this

[alexander-akait]

I think you are looking for https://webpack.js.org/configuration/resolve/#resolveroots

[latel]

I think you are looking for https://webpack.js.org/configuration/resolve/#resolveroots

It's not, the main purpose to use alias is to remove relative paths, reolsve.roots cannot solve this kind of problem.
I try to make my scenario more clearer.

I've folders structure below

/path/to/proj/src/servers/overrides/server
/path/to/proj/Proto/server

I've ABC.ts in both folders

/path/to/proj/src/servers/overrides/server/ABC.ts
/path/to/proj/Proto/server/ABC.ts

I've webpack configs

...
const resolve = dir => path.join(__dirname, dir)
...
configureWebpack: {
        resolve: {
            plugins: [
                // @see https://github.com/webpack/webpack/issues/6817#issuecomment-542448438
                new AliasPlugin(
                    'described-resolve',
                    [
                        {
                            name: '%',
                            alias: [resolve('src/servers/overrides'), resolve('Proto')],
                        },
                    ],
                    'resolve'
                ),
            ],
        },
    }
}
...

I've codes

import ABC from '%/server/ABC';
ABC();

now, when I delete /path/to/proj/src/servers/overrides/server/ABC.ts, webpack will not re-locate ABC to Proto/server/ABC.ts but throw errors, says /path/to/proj/src/servers/overrides/server/ABC.ts not exists.

Actually what I want is

1. when I delete /path/to/proj/src/servers/overrides/server/ABC.ts, webpack will re-locate ABC to Proto/server/ABC.ts
2. when I added /path/to/proj/src/servers/overrides/server/ABC.ts, webpack will re-locate ABC from Proto/server/ABC.ts to /path/to/proj/src/servers/overrides/server/ABC.ts

[alexander-akait]

Because webpack can't find your alternative path, please use roots to provide multiple places to resolve, you don't need AliasPlugin, sorry I don't undestand the problem

[latel]

Actually, chatGPT understands loll, words from chatGPT:

Unfortunately, this is not possible with webpack's default behavior. When resolving aliases, webpack will always prioritize the first matching alias it finds in the list, and will not automatically switch to a different alias if the original file is deleted.
One possible workaround is to use a custom plugin that listens for file changes and updates the alias configuration accordingly. However, this would require significant development effort and may not be practical for your use case.
Alternatively, you could consider restructuring your code to avoid duplicate file names and aliases, or use a different tool that supports more advanced file resolution strategies.

[alexander-akait]

@latel Yeah, it is impossible, you can try roots + alias and it should work, but using only AliasPlugin

[zecka]

@latel I think my issue #395 is exactly the same than yours.
Did you find a solution ?

[alexander-akait]

Let's close in favor #250, anyway PR welcome