diff --git a/test/fuzz/README.md b/test/fuzz/README.md
deleted file mode 100644
index 5adc1b04..00000000
--- a/test/fuzz/README.md
+++ /dev/null
@@ -1,43 +0,0 @@
-# Fuzzing tree-sitter
-
-The tree-sitter fuzzing support requires 1) the `libFuzzer` runtime library and 2) a recent version of clang
-
-## libFuzzer
-
-The main fuzzing logic is implemented by `libFuzzer` which is part of the compiler-rt project but is not shipped by distros. `libFuzzer` will need to be built from source, e.g.:
-
-```
-cd ~/src
-git clone https://github.com/llvm-mirror/compiler-rt
-cd compiler-rt/lib/fuzzer
-./build.sh
-```
-
-## clang
-
-Using libFuzzer requires at least version 7 of `clang` and may _not_ work with your system-installed version. If your system-installed version is too old, the easiest way to get started is to use the version provided by the Chromium team. Instructions are available at [libFuzzer.info](http://libfuzzer.info).
-
-The fuzzers can then be built with:
-```
-export CLANG_DIR=$HOME/src/third_party/llvm-build/Release+Asserts/bin
-CC="$CLANG_DIR/clang" CXX="$CLANG_DIR/clang++" LINK="$CLANG_DIR/clang++" \
-  LIB_FUZZER_PATH=$HOME/src/compiler-rt/lib/fuzzer/libFuzzer.a \
-  ./script/build-fuzzers
-```
-
-This will generate a separate fuzzer for each grammar defined in `test/fixtures/grammars` and will be instrumented with [AddressSanitizer](https://clang.llvm.org/docs/AddressSanitizer.html) and [UndefinedBehaviorSanitizer](https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html). Individual fuzzers can be built with, for example, `./script/build-fuzzers python ruby`.
-
-The `run-fuzzer` script handles running an individual fuzzer with a sensible default set of arguments:
-```
-./script/run-fuzzer <grammar-name> (halt|recover) <extra libFuzzer arguments...>
-```
-
-which will log information to stdout. Failing testcases and a fuzz corpus will be saved to `fuzz-results/<grammar-name>`. The most important extra `libFuzzer` options are `-jobs` and `-workers` which allow parallel fuzzing. This is can done with, e.g.:
-```
-./script/run-fuzzer <grammar-name> halt -jobs=32 -workers=32
-```
-
-The testcase can be used to reproduce the crash by running:
-```
-./script/reproduce <grammar-name> (halt|recover) <path-to-testcase>
-```
diff --git a/test/fuzz/fuzzer.cc b/test/fuzz/fuzzer.cc
deleted file mode 100644
index 3b933746..00000000
--- a/test/fuzz/fuzzer.cc
+++ /dev/null
@@ -1,79 +0,0 @@
-#include <cassert>
-#include <fstream>
-#include "tree_sitter/api.h"
-
-extern "C" const TSLanguage *TS_LANG();
-
-static TSQuery *lang_query;
-
-extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv) {
-  if(TS_LANG_QUERY_FILENAME[0]) {
-    // The query filename is relative to the fuzzing binary. Convert it
-    // to an absolute path first
-    auto binary_filename = std::string((*argv)[0]);
-    auto binary_directory = binary_filename.substr(0, binary_filename.find_last_of("\\/"));
-    auto lang_query_filename = binary_directory + "/" + TS_LANG_QUERY_FILENAME;
-
-    auto f = std::ifstream(lang_query_filename);
-    assert(f.good());
-    std::string lang_query_source((std::istreambuf_iterator<char>(f)), std::istreambuf_iterator<char>());
-
-    uint32_t error_offset = 0;
-    TSQueryError error_type = TSQueryErrorNone;
-
-    lang_query = ts_query_new(
-      TS_LANG(),
-      lang_query_source.c_str(),
-      lang_query_source.size(),
-      &error_offset,
-      &error_type
-    );
-
-    assert(lang_query);
-  }
-
-  return 0;
-}
-
-extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
-  const char *str = reinterpret_cast<const char *>(data);
-
-  TSParser *parser = ts_parser_new();
-
-  // This can fail if the language version doesn't match the runtime version
-  bool language_ok = ts_parser_set_language(parser, TS_LANG());
-  assert(language_ok);
-
-  TSTree *tree = ts_parser_parse_string(parser, NULL, str, size);
-  TSNode root_node = ts_tree_root_node(tree);
-
-  if (lang_query != nullptr) {
-    {
-      TSQueryCursor *cursor = ts_query_cursor_new();
-
-      ts_query_cursor_exec(cursor, lang_query, root_node);
-      TSQueryMatch match;
-      while (ts_query_cursor_next_match(cursor, &match)) {
-      }
-
-      ts_query_cursor_delete(cursor);
-    }
-
-    {
-      TSQueryCursor *cursor = ts_query_cursor_new();
-
-      ts_query_cursor_exec(cursor, lang_query, root_node);
-      TSQueryMatch match;
-      uint32_t capture_index;
-      while (ts_query_cursor_next_capture(cursor, &match, &capture_index)) {
-      }
-
-      ts_query_cursor_delete(cursor);
-    }
-  }
-
-  ts_tree_delete(tree);
-  ts_parser_delete(parser);
-
-  return 0;
-}
diff --git a/test/profile/heap.cc b/test/profile/heap.cc
deleted file mode 100644
index 6c0027e8..00000000
--- a/test/profile/heap.cc
+++ /dev/null
@@ -1,42 +0,0 @@
-#include <fstream>
-#include <string>
-#include <cstdlib>
-#include <tree_sitter/api.h>
-
-extern "C" {
-#include "javascript/src/parser.c"
-#include "javascript/src/scanner.c"
-}
-
-#define LANGUAGE tree_sitter_javascript
-#define SOURCE_PATH "javascript/examples/jquery.js"
-
-int main() {
-  TSParser *parser = ts_parser_new();
-  if (!ts_parser_set_language(parser, LANGUAGE())) {
-    fprintf(stderr, "Invalid language\n");
-    exit(1);
-  }
-
-  const char *source_path = GRAMMARS_DIR SOURCE_PATH;
-
-  printf("Parsing %s\n", source_path);
-
-  std::ifstream source_file(source_path);
-  if (!source_file.good()) {
-    fprintf(stderr, "Invalid source path %s\n", source_path);
-    exit(1);
-  }
-
-  std::string source_code(
-    (std::istreambuf_iterator<char>(source_file)),
-    std::istreambuf_iterator<char>()
-  );
-
-  TSTree *tree = ts_parser_parse_string(
-    parser,
-    NULL,
-    source_code.c_str(),
-    source_code.size()
-  );
-}