Unsupported platform for fsevents@2.0.7、（２）nodist(x64)をインストールしたい、を解決したい

よろしくお願いします。

環境：　windows10 , nodist 0.9.1

windows10上にnodistを入れ、あるモジュールをビルドしようとしています。
yarn installを行い、lernaを入れようと「npm i -D lerna」を実行したところ以下のエラーになりました
→ ERROR01

この後、npmやmodule、package.json、nucのアップデート、
killall node
npm cache clear　を行い、その中で
「npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9」
が多く見受けるようになりました。これが出ないように解決したい。
というのが１つ目です。

２つ目に、nodistをインストーラーで入れるとProgramFiles(x86）に入っています。
x64版というのはないのでしょうか？
fseventsに関するエラーを見ると、
npm ERR! notsup Unsupported platform for fsevents@2.0.7: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
のエラーも何度もみかけます。osは32（x86）でモジュールは64って、なんか違和感があるんです。
これで正しい、合ってるというのならそれでもいいのですが、じゃあ何故ちがっててもいいのか？を具体的に捉えたいです。

どんな些細なことでも結構です。情報のご提供、ご教授いただけると幸いです。
よろしくお願いします。

ERROR01
1H:0620\master>npm i -D lerna
2npm WARN deprecated mixin-deep@1.3.1: Critical bug fixed in v2.0.1, please upgrade to the latest version.
3npm WARN deprecated set-value@2.0.0: Critical bug fixed in v3.0.1, please upgrade to the latest version.
4npm WARN deprecated set-value@0.4.3: Critical bug fixed in v3.0.1, please upgrade to the latest version.
5npm WARN deprecated left-pad@1.3.0: use String.prototype.padStart()
6npm WARN deprecated domelementtype@1.3.0: update to domelementtype@1.3.1
7npm WARN rm not removing H:0620\master\node_modules.bin\rimraf.cmd as it wasn't installed by H:0620\master\node_modules\rimraf
8npm WARN rm not removing H:0620\master\node_modules.bin\rimraf as it wasn't installed by H:0620\master\node_modules\rimraf
9npm WARN rm not removing H:0620\master\node_modules.bin\JSONStream.cmd as it wasn't installed by H:0620\master\node_modules\JSONStream
10npm WARN rm not removing H:0620\master\node_modules.bin\JSONStream as it wasn't installed by H:0620\master\node_modules\JSONStream
11npm WARN rm not removing H:0620\master\node_modules.bin\semver.cmd as it wasn't installed by H:0620\master\node_modules\semver
12npm WARN rm not removing H:0620\master\node_modules.bin\semver as it wasn't installed by H:0620\master\node_modules\semver
13npm WARN rm not removing H:0620\master\node_modules.bin\js-yaml.cmd as it wasn't installed by H:0620\master\node_modules\js-yaml
14npm WARN rm not removing H:0620\master\node_modules.bin\js-yaml as it wasn't installed by H:0620\master\node_modules\js-yaml
15npm WARN rm not removing H:0620\master\node_modules.bin\jest.cmd as it wasn't installed by H:0620\master\node_modules\jest-cli
16npm WARN rm not removing H:0620\master\node_modules.bin\jest as it wasn't installed by H:0620\master\node_modules\jest-cli
17npm WARN rm not removing H:0620\master\node_modules.bin\is-ci.cmd as it wasn't installed by H:0620\master\node_modules\is-ci
18npm WARN rm not removing H:0620\master\node_modules.bin\is-ci as it wasn't installed by H:0620\master\node_modules\is-ci
19npm WARN rm not removing H:0620\master\node_modules.bin\esparse.cmd as it wasn't installed by H:0620\master\node_modules\esprima
20npm WARN rm not removing H:0620\master\node_modules.bin\esvalidate.cmd as it wasn't installed by H:0620\master\node_modules\esprima
21npm WARN rm not removing H:0620\master\node_modules.bin\esparse as it wasn't installed by H:0620\master\node_modules\esprima
22npm WARN rm not removing H:0620\master\node_modules.bin\esvalidate as it wasn't installed by H:0620\master\node_modules\esprima
23npm WARN rm not removing H:0620\master\node_modules.bin\parser.cmd as it wasn't installed by H:0620\master\node_modules\@babel\parser
24npm WARN rm not removing H:0620\master\node_modules.bin\parser as it wasn't installed by H:0620\master\node_modules\@babel\parser
25npm notice created a lockfile as package-lock.json. You should commit this file.
26npm WARN acorn-jsx@5.0.1 requires a peer of acorn@^6.0.0 but none is installed. You must install peer dependencies yourself.
27npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@1.2.9 (node_modules\fsevents):
28npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for fsevents@1.2.9: wanted {"os":"darwin","arch":"any"} (current: {"os":"win32","arch":"x64"})
29
30+ lerna@3.15.0
31added 112 packages from 78 contributors, removed 135 packages, updated 968 packages and audited 912958 packages in 152.492s
32found 3 high severity vulnerabilities
33  run `npm audit fix` to fix them, or `npm audit` for details