(aws-lambda-nodejs): does not properly detect `esbuild` when used with Yarn 2+ in PnP mode

aws-cdk in general works properly with yarn 2+ in Plug’n’Play (PnP) mode. See https://yarnpkg.com/features/pnp

PnP mode does not use node_modules and thus npx cannot detect that esbuild is installed in the project, so this block of code fails:

https://github.com/aws/aws-cdk/blob/8f1cfe4087b765cecd3ceb01745167646d617fec/packages/%40aws-cdk/aws-lambda-nodejs/lib/util.ts#L115-L130

Also this block of code is problematic as well since it also uses npx: https://github.com/aws/aws-cdk/blob/8f1cfe4087b765cecd3ceb01745167646d617fec/packages/%40aws-cdk/aws-lambda-nodejs/lib/bundling.ts#L141-L158

Overall, spawning esbuild via its CLI seems far less than ideal. Instead, it should probably be executed via its nodejs api:

Example:

require('esbuild').buildSync({
  entryPoints: ['in.ts'],
  outfile: 'out.js',
})

Getting the installed version would be as easy as: require('esbuild/package.json').version

Reproduction Steps

mkdir test
yarn init -2
...set up cdk project...
yarn add esbuild

yarn cdk deploy '*'

Prints: esbuild cannot run locally. Switching to Docker bundling.

A workaround is possible by installing esbuild globally, but this is far from ideal.

What did you expect to happen?

esbuild should work properly

What actually happened?

esbuild cannot run locally. Switching to Docker bundling.

Environment

• CDK CLI Version : 1.90.1
• Framework Version: 1.90.1
• Node.js Version: 15.9.0
• OS : macOS
• Language (Version): TypeScript 4.0.5

Other

Originally added in https://github.com/aws/aws-cdk/pull/11289 by @jogold

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This is 🐛 Bug Report

[jogold]

#14914

[titanjer]

Just report I got error Command "esbuild" not found. under yarn v1.22.10 and cdk 1.106.1 (build c832c1b)