1 files changed, 75 insertions, 0 deletions
diff --git a/packages/excalidraw/errors.ts b/packages/excalidraw/errors.ts
new file mode 100644
index 0000000..d6091b0
--- /dev/null
+++ b/packages/excalidraw/errors.ts
@@ -0,0 +1,75 @@
+type CANVAS_ERROR_NAMES = "CANVAS_ERROR" | "CANVAS_POSSIBLY_TOO_BIG";
+
+export class CanvasError extends Error {
+  constructor(
+    message: string = "Couldn't export canvas.",
+    name: CANVAS_ERROR_NAMES = "CANVAS_ERROR",
+  ) {
+    super();
+    this.name = name;
+    this.message = message;
+  }
+}
+
+export class AbortError extends DOMException {
+  constructor(message: string = "Request Aborted") {
+    super(message, "AbortError");
+  }
+}
+
+type ImageSceneDataErrorCode =
+  | "IMAGE_NOT_CONTAINS_SCENE_DATA"
+  | "IMAGE_SCENE_DATA_ERROR";
+
+export class ImageSceneDataError extends Error {
+  public code;
+  constructor(
+    message = "Image Scene Data Error",
+    code: ImageSceneDataErrorCode = "IMAGE_SCENE_DATA_ERROR",
+  ) {
+    super(message);
+    this.name = "EncodingError";
+    this.code = code;
+  }
+}
+
+export class InvalidFractionalIndexError extends Error {
+  public code = "ELEMENT_HAS_INVALID_INDEX" as const;
+}
+
+type WorkerErrorCodes = "WORKER_URL_NOT_DEFINED" | "WORKER_IN_THE_MAIN_CHUNK";
+
+export class WorkerUrlNotDefinedError extends Error {
+  public code;
+  constructor(
+    message = "Worker URL is not defined!",
+    code: WorkerErrorCodes = "WORKER_URL_NOT_DEFINED",
+  ) {
+    super(message);
+    this.name = "WorkerUrlNotDefinedError";
+    this.code = code;
+  }
+}
+
+export class WorkerInTheMainChunkError extends Error {
+  public code;
+  constructor(
+    message = "Worker has to be in a separate chunk!",
+    code: WorkerErrorCodes = "WORKER_IN_THE_MAIN_CHUNK",
+  ) {
+    super(message);
+    this.name = "WorkerInTheMainChunkError";
+    this.code = code;
+  }
+}
+
+/**
+ * Use this for generic, handled errors, so you can check against them
+ * and rethrow if needed
+ */
+export class ExcalidrawError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = "ExcalidrawError";
+  }
+}