Question mark placeholder not replace in drop index sql

[mooring]

question mark placeholder not replace in drop index sql

working copy

let Database = require('better-sqlite3')
let db   = new Database('./test.db', {verbose: console.log}) 
let sqls = [
    'create table if not exists test(id INTEGER PRIMARY KEY, content varchar(20) null)',
    'create index if not exists idx_test_content on test(content)'
]
sqls.forEach(i => db.prepare(i).run())
let sql = 'DROP INDEX IF EXISTS idx_test_content'
db.prepare(sql).run()

not working copy

let Database = require('better-sqlite3')
let db   = new Database('./test.db', {verbose: console.log}) 
let sqls = [
    'create table if not exists test(id INTEGER PRIMARY KEY, content varchar(20) null)',
    'create index if not exists idx_test_content on test(content)'
]
sqls.forEach(i => db.prepare(i).run())
let sql = 'DROP INDEX IF EXISTS ?'
db.prepare(sql).run('idx_test_content')

error message

return this[cppdb].prepare(sql, this, false);
                       ^
SqliteError: near "?": syntax error
    at Database.prepare (./node_modules/better-sqlite3/lib/methods/wrappers.js:5:21)

env and version

• System: MacBook Pro 14.2.1 (23C71) / 2.6 GHz 6-Core Intel Core i7
• node: v20.10.0
• better-sqlite3: v9.4.0
• sqlite3: 3.45.1 (node_modules/better-sqlite3/deps/sqlite3/sqlite3.c:463)

[Prinzhorn]

Placeholders cannot be used for table/index names. This is not specific to better-sqlite3.

[JoshuaWise]

This is not a bug. See here: https://github.com/WiseLibs/better-sqlite3/discussions/1132#discussioncomment-8289798