automatically rm deprecated code

Author: typicode

docs/sponsorkit/sponsors.svg

@@ -1,8 +1,9 @@
 import c from 'child_process'
-import f, { writeFileSync as w } from 'fs'
+import f, { readdir, writeFileSync as w } from 'fs'
 import p from 'path'
 
-let l = [ 'pre-commit', 'prepare-commit-msg', 'commit-msg', 'post-commit', 'applypatch-msg', 'pre-applypatch', 'post-applypatch', 'pre-rebase', 'post-rewrite', 'post-checkout', 'post-merge', 'pre-push', 'pre-auto-gc' ]
+let l = [ 'pre-commit', 'prepare-commit-msg', 'commit-msg', 'post-commit', 'applypatch-msg', 'pre-applypatch', 'post-applypatch', 'pre-rebase', 'post-rewrite', 'post-checkout', 'post-merge', 'pre-push', 'pre-auto-gc' ],
+	re = /^(#!\/usr\/bin\/env sh|\. "\$\(dirname -- "\$0"\)\/_\/husky\.sh")\r?\n/gm
 
 export default (d = '.husky') => {
 	if (process.env.HUSKY === '0') return 'HUSKY=0 skip install'
@@ -14,6 +15,16 @@ export default (d = '.husky') => {
 	if (s == null) return 'git command not found'
 	if (s) return '' + e
 
+	f.rmSync(_('husky.sh'), { force: true })
+	l.forEach(h => {
+		let hp = p.join(d, h)
+		if (!f.existsSync(hp)) return
+		let prev = f.readFileSync(hp, 'utf8')
+		let next = prev.replace(re, '')
+		if (prev !== next) console.log(`husky - removed deprecated code from ${hp}`)
+		f.writeFileSync(hp, next)
+	})
+
 	f.mkdirSync(_(), { recursive: true })
 	w(_('.gitignore'), '*')
 	f.copyFileSync(new URL('husky', import.meta.url), _('h'))

index.js

@@ -13,3 +13,4 @@ sh test/8_set_u.sh
 sh test/9_husky_0.sh
 sh test/10_init.sh
 sh test/11_time.sh
+sh test/12_rm_deprecated.sh

test.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+. test/functions.sh
+setup
+install
+
+npx --no-install husky
+
+cat > .husky/pre-commit <<'EOL'
+# foo
+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+# bar
+EOL
+
+cat > expected <<'EOL'
+# foo
+# bar
+EOL
+
+npx --no-install husky
+expect 0 "diff .husky/pre-commit expected"

test/10_init.sh

@@ -10,5 +10,5 @@ expect_hooksPath_to_be ".husky/_"
 
 # Test pre-commit
 git add package.json
-echo "echo \"pre-commit\" && exit 1" >.husky/pre-commit
+echo "echo \"pre-commit\" && exit 1" > .husky/pre-commit
 expect 1 "git commit -m foo"

test/12_rm_deprecated.sh

@@ -10,5 +10,5 @@ expect_hooksPath_to_be ".husky/_"
 
 # Test pre-commit with 127 exit code
 git add package.json
-echo "exit 127" >.husky/pre-commit
+echo "exit 127" > .husky/pre-commit
 expect 1 "git commit -m foo"