feat(install_util): add support for DENO_DIR

[uki00a]

This PR changes install_util.ts to install esbuild.wasm into DENO_DIR if it is defined.

[kt3k]

@uki00a
I'm ok with this addition but can you elaborate a little bit on the motivation of this change?

Do you usually specify DENO_DIR somewhere different from the default?

[uki00a]

@kt3k

Do you usually specify DENO_DIR somewhere different from the default?

Yes, I've specified the DENO_DIR explicitly in my ~/.zshrc.

I'm using asdf-deno to manage multiple Deno environments.

asdf-deno is dynamically switching DENO_DIR depending on the currently enabled Deno version.

For example, if the currently enabled version of Deno is v1.16.4, the following directory will be set to DENO_DIR:

~/.asdf/installs/deno/1.16.4/.cache/deno

To avoid this behavior by asdf-deno, I've explicitly set DENO_DIR in ~/.zshrc as follows:

export DENO_DIR=$HOME/.cache/deno

Therefore, I wanted esbuild.wasm used by packup to also be installed in ~/.cache/deno instead of ~/.deno 🙂

[kt3k]

Thank you for your explanation! Ok. Let's do this!

[kt3k]

published as v0.1.10

[uki00a]

Thanks for the review and release!