CachedInputFileSystem OOM when duration is infinity

[Jack-Works]

new enhanced.CachedInputFileSystem(fs, Infinity)

I want to have a never-expire cache but infinity crashes with OOM

[alexander-akait]

Because in this case we store all readed files and so you have OOM

[Jack-Works]

Hmm, it crashes with OOM without resolving any file.

enhanced-resolve/lib/CachedInputFileSystem.js

Line 139 in ca76a47

for (let i = 5000; i < duration; i += 500) this._levels.push(new Set());

It dies in this loop.

[alexander-akait]

Oh, I see, do you want to send a fix?

[Jack-Works]

👀 I don't familiar with how this work

[alexander-akait]

Just add checks on Infinity:

• https://github.com/webpack/enhanced-resolve/blob/main/lib/CachedInputFileSystem.js#L139 don't run it
• Ensure we don't run https://github.com/webpack/enhanced-resolve/blob/main/lib/CachedInputFileSystem.js#L141 to clear

And couple of tests, it is exotic usage, so if you need it as soon as possible, I would advise you to implement it yourself