Add YAMLSyntaxError (#309)

Author: fisker

src/factories/error.ts

@@ -8,9 +8,9 @@ import {
   type Position,
   type Root,
   type Tag,
-  type YAMLSyntaxError,
   type YamlUnistNode,
 } from "./types.ts";
+import { type YAMLSyntaxError } from "./yaml-syntax-error.ts";
 
 export type Arrayable<T> = T | T[];
 

src/helpers.ts

@@ -1,2 +1,3 @@
-export * from "./parse.ts";
-export * from "./types.ts";
+export { parse } from "./parse.ts";
+export type * from "./types.ts";
+export { YAMLSyntaxError } from "./yaml-syntax-error.ts";

src/index.ts

@@ -2,10 +2,10 @@ import * as YAML from "yaml";
 import { attachComments } from "./attach.ts";
 import { createRoot } from "./factories/root.ts";
 import Context from "./transforms/context.ts";
-import { transformError } from "./transforms/error.ts";
 import type { ParseOptions, Root } from "./types.ts";
 import { removeFakeNodes } from "./utils/remove-fake-nodes.ts";
 import { updatePositions } from "./utils/update-positions.ts";
+import { YAMLSyntaxError } from "./yaml-syntax-error.ts";
 
 export function parse(text: string, options?: ParseOptions): Root {
   const lineCounter = new YAML.LineCounter();
@@ -48,7 +48,7 @@ export function parse(text: string, options?: ParseOptions): Root {
 function throwParseError(document: YAML.Document.Parsed, context: Context) {
   const { errors } = document;
   if (errors.length > 0) {
-    throw transformError(errors[0], context);
+    throw new YAMLSyntaxError(context, errors[0]);
   }
   return document;
 }

src/parse.ts

@@ -62,11 +62,6 @@ export interface EndCommentAttachable {
   endComments: Comment[];
 }
 
-export interface YAMLSyntaxError extends SyntaxError {
-  source: string;
-  position: Position;
-}
-
 export type YamlUnistNode =
   | Comment
   | Tag

src/transforms/error.ts

@@ -0,0 +1,21 @@
+import type * as YAML from "yaml";
+import type Context from "./transforms/context.ts";
+import { type Position } from "./types";
+
+export class YAMLSyntaxError extends SyntaxError {
+  name = "YAMLSyntaxError";
+
+  code: YAML.ErrorCode;
+
+  source: string;
+  position: Position;
+
+  constructor(context: Context, error: YAML.YAMLError) {
+    super(error.message, { cause: error });
+
+    this.code = error.code;
+
+    this.source = context.text;
+    this.position = context.transformRange(error.pos);
+  }
+}