diff --git a/ale_linters/javascript/tsserver.vim b/ale_linters/javascript/tsserver.vim
index 62dded10..6cf08dd6 100644
--- a/ale_linters/javascript/tsserver.vim
+++ b/ale_linters/javascript/tsserver.vim
@@ -5,22 +5,13 @@ call ale#Set('javascript_tsserver_executable', 'tsserver')
 call ale#Set('javascript_tsserver_config_path', '')
 call ale#Set('javascript_tsserver_use_global', get(g:, 'ale_use_global_executables', 0))
 
-" These functions need to be defined just to comply with the API for LSP.
-function! ale_linters#javascript#tsserver#GetProjectRoot(buffer) abort
-    return ''
-endfunction
-
-function! ale_linters#javascript#tsserver#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'javascript_tsserver', [
-    \   'node_modules/.bin/tsserver',
-    \])
-endfunction
-
 call ale#linter#Define('javascript', {
 \   'name': 'tsserver',
 \   'lsp': 'tsserver',
-\   'executable_callback': 'ale_linters#javascript#tsserver#GetExecutable',
-\   'command_callback': 'ale_linters#javascript#tsserver#GetExecutable',
-\   'project_root_callback': 'ale_linters#javascript#tsserver#GetProjectRoot',
+\   'executable_callback': ale#node#FindExecutableFunc('javascript_tsserver', [
+\       'node_modules/.bin/tsserver',
+\   ]),
+\   'command': '%e',
+\   'project_root_callback': {-> ''},
 \   'language': '',
 \})
diff --git a/ale_linters/typescript/tsserver.vim b/ale_linters/typescript/tsserver.vim
index 0ad35d37..bac63229 100644
--- a/ale_linters/typescript/tsserver.vim
+++ b/ale_linters/typescript/tsserver.vim
@@ -11,7 +11,7 @@ call ale#linter#Define('typescript', {
 \   'executable_callback': ale#node#FindExecutableFunc('typescript_tsserver', [
 \       'node_modules/.bin/tsserver',
 \   ]),
-\   'command_callback': 'ale_linters#typescript#tsserver#GetExecutable',
+\   'command': '%e',
 \   'project_root_callback': {-> ''},
 \   'language': '',
 \})
diff --git a/test/command_callback/test_javascript_tsserver_command_callback.vader b/test/command_callback/test_javascript_tsserver_command_callback.vader
new file mode 100644
index 00000000..638dd873
--- /dev/null
+++ b/test/command_callback/test_javascript_tsserver_command_callback.vader
@@ -0,0 +1,8 @@
+Before:
+  call ale#assert#SetUpLinterTest('javascript', 'tsserver')
+
+After:
+  call ale#assert#TearDownLinterTest()
+
+Execute(The default command should be correct):
+  AssertLinter 'tsserver', ale#Escape('tsserver')
diff --git a/test/command_callback/test_typescript_tsserver_command_callback.vader b/test/command_callback/test_typescript_tsserver_command_callback.vader
new file mode 100644
index 00000000..719ac184
--- /dev/null
+++ b/test/command_callback/test_typescript_tsserver_command_callback.vader
@@ -0,0 +1,8 @@
+Before:
+  call ale#assert#SetUpLinterTest('typescript', 'tsserver')
+
+After:
+  call ale#assert#TearDownLinterTest()
+
+Execute(The default command should be correct):
+  AssertLinter 'tsserver', ale#Escape('tsserver')