fix(install): do not fail if not inside a Git directory

.husky/.gitignore

@@ -1 +1 @@
-_
+_

package.json

@@ -44,7 +44,7 @@
     "prepublish": "pinst --disable",
     "postpublish": "pinst --enable",
     "pretest": "npm run build --silent && npm pack --silent",
-    "test": "sh ./test/default.sh && sh ./test/sub-dir.sh && sh ./test/config-dir.sh",
+    "test": "sh ./test/default.sh && sh ./test/sub-dir.sh && sh ./test/config-dir.sh && sh ./test/not-git-dir.sh",
     "posttest": "rm husky-*.tgz",
     "commit": "commit"
   },

src/commands/install.ts

@@ -3,6 +3,13 @@ import path from 'path'
 import cp from 'child_process'
 
 export function install(dir = '.husky'): void {
+  // Ensure that we're inside a git repository
+  if (cp.spawnSync('git', ['rev-parse']).status !== 0) {
+    // Do not fail to let projects downloaded as zip files have their dependencies installed
+    console.log('husky - not a Git repository, skipping hooks installation')
+    return
+  }
+
   // Ensure that we're not trying to install outside cwd
   const absoluteHooksDir = path.resolve(process.cwd(), dir)
   if (!absoluteHooksDir.startsWith(process.cwd())) {
@@ -27,7 +34,11 @@ export function install(dir = '.husky'): void {
       path.join(dir, '_/husky.sh'),
     )
 
-    cp.spawnSync('git', ['config', 'core.hooksPath', dir])
+    // Configure repo
+    const { error } = cp.spawnSync('git', ['config', 'core.hooksPath', dir])
+    if (error) {
+      throw error
+    }
   } catch (e) {
     console.log('husky - Git hooks failed to install')
     throw e

test/not-git-dir.sh

@@ -0,0 +1,13 @@
+# shellcheck shell=bash
+
+# shellcheck source=./_functions.sh
+. "$(dirname "$0")/_functions.sh"
+
+title "not git dir"
+tempDir="/tmp/husky-not-git-dir"
+
+rm -rf $tempDir
+cd_and_install_tgz $tempDir
+
+# Should not fail
+npx --no-install husky install && echo -e "\e[0;32mOK\e[m"