Limit package.json realpath lookup to only successful resolutions

[weswigham]

To test if this is a possible fix for #46204

[weswigham]

@typescript-bot pack this

[typescript-bot]

Heya @weswigham, I've started to run the tarball bundle task on this PR at 2286798. You can monitor the build here.

[typescript-bot]

Hey @weswigham, I've packed this into an installable tgz. You can install it for testing by referencing it in your package.json like so:

{
    "devDependencies": {
        "typescript": "https://typescript.visualstudio.com/cf7ac146-d525-443c-b23c-0d58337efebc/_apis/build/builds/112410/artifacts?artifactName=tgz&fileId=214D9C3AF8DB7A4283A82357B806CF870FEF7A8CB13592C6EA7397FB5B3F47D902&fileName=/typescript-4.5.0-insiders.20211004.tgz"
    }
}

and then running npm install.

---

There is also a playground for this build and an npm module you can use via "typescript": "npm:@typescript-deploys/pr-build@4.5.0-pr-46209-2".;

[weswigham]

@amcasey 's testing shows this to be a pretty significant perf improvement (over the other PR, too), so I'm going to merge this~

[MLoughry]

@weswigham Testing this change, it's about ~55% faster (~35% less build time) than 4.3.5, which is itself is >2x faster than 4.4.3. Is there a way to integrate this into a 4.4.4 release?

[weswigham]

@DanielRosenwasser would be the one to ask~

[andrewbranch]

Will discuss with @DanielRosenwasser shortly.

@typescript-bot cherry-pick this to release-4.4

[typescript-bot]

Heya @andrewbranch, I've started to run the task to cherry-pick this into release-4.4 on this PR at 2286798. You can monitor the build here.

[typescript-bot]

Hey @andrewbranch, I've opened #46230 for you.