Electronのquick-startが正常に動作しなくなった

前提・実現したいこと

Electronのquick-startを使用しており、修正で色々いじった結果
npm startがエラー表示され実行されない。

node -v : v9.2.0
npm -v 5.5.1

発生している問題・エラーメッセージ

iterm
1npm start
2npm WARN npm npm does not support Node.js v9.2.0
3npm WARN npm You should probably upgrade to a newer version of node as we
4npm WARN npm can't make any promises that npm will work with this version.
5npm WARN npm Supported releases of Node.js are the latest release of 4, 6, 7, 8.
6npm WARN npm You can find the latest version at https://nodejs.org/
7
8> electron-quick-start@1.0.0 start /Users/{ユーザ名}/electron-quick-start
9> electron .
10
11sh: electron: command not found
12npm ERR! file sh
13npm ERR! code ELIFECYCLE
14npm ERR! errno ENOENT
15npm ERR! syscall spawn
16npm ERR! electron-quick-start@1.0.0 start: `electron .`
17npm ERR! spawn ENOENT
18npm ERR!
19npm ERR! Failed at the electron-quick-start@1.0.0 start script.
20npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
21
22npm ERR! A complete log of this run can be found in:
23npm ERR!     /Users/{ユーザ名}/.npm/_logs/2019-02-13T02_44_31_316Z-debug.log

log
10 info it worked if it ends with ok
21 warn npm npm does not support Node.js v9.2.0
32 warn npm You should probably upgrade to a newer version of node as we
43 warn npm can't make any promises that npm will work with this version.
54 warn npm Supported releases of Node.js are the latest release of 4, 6, 7, 8.
65 warn npm You can find the latest version at https://nodejs.org/
76 verbose cli [ '/Users/{ユーザ名}/.ndenv/versions/v9.2.0/bin/node',
86 verbose cli   '/Users/{ユーザ名}/.ndenv/versions/v9.2.0/bin/npm',
96 verbose cli   'start' ]
107 info using npm@5.5.1
118 info using node@v9.2.0
129 verbose run-script [ 'prestart', 'start', 'poststart' ]
1310 info lifecycle electron-quick-start@1.0.0~prestart: electron-quick-start@1.0.0
1411 info lifecycle electron-quick-start@1.0.0~start: electron-quick-start@1.0.0
1512 verbose lifecycle electron-quick-start@1.0.0~start: unsafe-perm in lifecycle true
1613 verbose lifecycle electron-quick-start@1.0.0~start: PATH: /Users/{ユーザ名}/.ndenv/versions/v9.2.0/lib/node_modules/npm/bin/node-gyp-bin:/Users/{ユーザ名}/electron-quick-start/node_modules/.bin:/Users/{ユーザ名}/.ndenv/versions/v9.2.0/bin:/Users/{ユーザ名}/.ndenv/libexec:/Users/{ユーザ名}/.ndenv/plugins/node-build/bin:/Users/{ユーザ名}/.ndenv/shims:/Users/{ユーザ名}/.ndenv/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
1714 verbose lifecycle electron-quick-start@1.0.0~start: CWD: /Users/{ユーザ名}/electron-quick-start
1815 silly lifecycle electron-quick-start@1.0.0~start: Args: [ '-c', 'electron .' ]
1916 info lifecycle electron-quick-start@1.0.0~start: Failed to exec start script
2017 verbose stack Error: electron-quick-start@1.0.0 start: `electron .`
2117 verbose stack spawn ENOENT
2217 verbose stack     at ChildProcess.<anonymous> (/Users/{ユーザ名}/.ndenv/versions/v9.2.0/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:48:18)
2317 verbose stack     at ChildProcess.emit (events.js:159:13)
2417 verbose stack     at maybeClose (internal/child_process.js:943:16)
2517 verbose stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:220:5)
2618 verbose pkgid electron-quick-start@1.0.0
2719 verbose cwd /Users/{ユーザ名}/electron-quick-start
2820 verbose Darwin 18.2.0
2921 verbose argv "/Users/{ユーザ名}/.ndenv/versions/v9.2.0/bin/node" "/Users/{ユーザ名}/.ndenv/versions/v9.2.0/bin/npm" "start"
3022 verbose node v9.2.0
3123 verbose npm  v5.5.1
3224 error file sh
3325 error code ELIFECYCLE
3426 error errno ENOENT
3527 error syscall spawn
3628 error electron-quick-start@1.0.0 start: `electron .`
3728 error spawn ENOENT
3829 error Failed at the electron-quick-start@1.0.0 start script.
3929 error This is probably not a problem with npm. There is likely additional logging output above.
4030 verbose exit [ 1, true ]