Introduce high-performance native addon API in Bun.build, starting with build.onBeforeParse hook (#14971)

Co-authored-by: Zack Radisic <56137411+zackradisic@users.noreply.github.com>
Co-authored-by: zackradisic <zackradisic@users.noreply.github.com>

packages/bun-native-bundler-plugin-api/bundler_plugin.h

@@ -0,0 +1,73 @@
+#ifndef BUN_NATIVE_BUNDLER_PLUGIN_API_H
+#define BUN_NATIVE_BUNDLER_PLUGIN_API_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+typedef enum {
+  BUN_LOADER_JSX = 0,
+  BUN_LOADER_JS = 1,
+  BUN_LOADER_TS = 2,
+  BUN_LOADER_TSX = 3,
+  BUN_LOADER_CSS = 4,
+  BUN_LOADER_FILE = 5,
+  BUN_LOADER_JSON = 6,
+  BUN_LOADER_TOML = 7,
+  BUN_LOADER_WASM = 8,
+  BUN_LOADER_NAPI = 9,
+  BUN_LOADER_BASE64 = 10,
+  BUN_LOADER_DATAURL = 11,
+  BUN_LOADER_TEXT = 12,
+} BunLoader;
+
+const BunLoader BUN_LOADER_MAX = BUN_LOADER_TEXT;
+
+typedef struct BunLogOptions {
+  size_t __struct_size;
+  const uint8_t *message_ptr;
+  size_t message_len;
+  const uint8_t *path_ptr;
+  size_t path_len;
+  const uint8_t *source_line_text_ptr;
+  size_t source_line_text_len;
+  int8_t level;
+  int line;
+  int lineEnd;
+  int column;
+  int columnEnd;
+} BunLogOptions;
+
+typedef struct {
+  size_t __struct_size;
+  void *bun;
+  const uint8_t *path_ptr;
+  size_t path_len;
+  const uint8_t *namespace_ptr;
+  size_t namespace_len;
+  uint8_t default_loader;
+  void *external;
+} OnBeforeParseArguments;
+
+typedef struct OnBeforeParseResult {
+  size_t __struct_size;
+  uint8_t *source_ptr;
+  size_t source_len;
+  uint8_t loader;
+  int (*fetchSourceCode)(const OnBeforeParseArguments *args,
+                         struct OnBeforeParseResult *result);
+  void *plugin_source_code_context;
+  void (*free_plugin_source_code_context)(void *ctx);
+  void (*log)(const OnBeforeParseArguments *args, BunLogOptions *options);
+} OnBeforeParseResult;
+
+typedef enum {
+  BUN_LOG_LEVEL_VERBOSE = 0,
+  BUN_LOG_LEVEL_DEBUG = 1,
+  BUN_LOG_LEVEL_INFO = 2,
+  BUN_LOG_LEVEL_WARN = 3,
+  BUN_LOG_LEVEL_ERROR = 4,
+} BunLogLevel;
+
+const BunLogLevel BUN_LOG_MAX = BUN_LOG_LEVEL_ERROR;
+
+#endif // BUN_NATIVE_BUNDLER_PLUGIN_API_H