Update dependency yaml to v2

package.json

@@ -21,7 +21,7 @@
   },
   "license": "MIT",
   "scripts": {
-    "prepublish": "patch-package && yarn run build",
+    "prepublish": "yarn run build",
     "lint": "run-p \"lint:*\"",
     "lint:eslint": "eslint .",
     "lint:prettier": "prettier . --check",
@@ -35,7 +35,7 @@
     "release": "yarn build && standard-version"
   },
   "dependencies": {
-    "yaml": "^1.10.2"
+    "yaml": "^2.8.1"
   },
   "devDependencies": {
     "@eslint/js": "9.39.1",

src/attach.ts

@@ -123,7 +123,7 @@ function attachComment(
 
   const { trailingAttachableNode } = nodeTable[commentLine - 1];
   if (trailingAttachableNode) {
-    // istanbul ignore next
+    // istanbul ignore if -- @preserve
     if (trailingAttachableNode.trailingComment) {
       throw new Error(
         `Unexpected multiple trailing comment at ${getPointText(

src/cst.ts

@@ -0,0 +1,118 @@
+import type * as YAML from "yaml";
+
+// Subdivide YAML.CST.SourceToken
+export type SpaceSourceToken = YAML.CST.SourceToken & {
+  type: "space" | "newline";
+};
+export type CommentSourceToken = YAML.CST.SourceToken & { type: "comment" };
+export type DocStartSourceToken = YAML.CST.SourceToken & { type: "doc-start" };
+export type TagSourceToken = YAML.CST.SourceToken & { type: "tag" };
+export type AnchorSourceToken = YAML.CST.SourceToken & { type: "anchor" };
+export type SeqItemIndSourceToken = YAML.CST.SourceToken & {
+  type: "seq-item-ind";
+};
+export type ExplicitKeyIndSourceToken = YAML.CST.SourceToken & {
+  type: "explicit-key-ind";
+};
+export type MapValueIndSourceToken = YAML.CST.SourceToken & {
+  type: "map-value-ind";
+};
+export type FlowMapEndSourceToken = YAML.CST.SourceToken & {
+  type: "flow-map-end";
+};
+export type FlowSeqEndSourceToken = YAML.CST.SourceToken & {
+  type: "flow-seq-end";
+};
+export type CommaSourceToken = YAML.CST.SourceToken & { type: "comma" };
+export type BlockScalarHeaderSourceToken = YAML.CST.SourceToken & {
+  type: "block-scalar-header";
+};
+export type OtherSourceToken = YAML.CST.SourceToken & {
+  type: Exclude<
+    YAML.CST.SourceToken["type"],
+    (
+      | SpaceSourceToken
+      | CommentSourceToken
+      | DocStartSourceToken
+      | TagSourceToken
+      | AnchorSourceToken
+      | SeqItemIndSourceToken
+      | ExplicitKeyIndSourceToken
+      | MapValueIndSourceToken
+      | FlowMapEndSourceToken
+      | FlowSeqEndSourceToken
+      | CommaSourceToken
+      | BlockScalarHeaderSourceToken
+    )["type"]
+  >;
+};
+export type SourceToken =
+  | CommentSourceToken
+  | DocStartSourceToken
+  | TagSourceToken
+  | AnchorSourceToken
+  | SeqItemIndSourceToken
+  | ExplicitKeyIndSourceToken
+  | MapValueIndSourceToken
+  | FlowMapEndSourceToken
+  | FlowSeqEndSourceToken
+  | CommaSourceToken
+  | BlockScalarHeaderSourceToken
+  | OtherSourceToken;
+
+// Subdivide YAML.CST.FlowScalar
+export type DoubleQuotedFlowScalar = YAML.CST.FlowScalar & {
+  type: "double-quoted-scalar";
+};
+export type SingleQuotedFlowScalar = YAML.CST.FlowScalar & {
+  type: "single-quoted-scalar";
+};
+export type OtherFlowScalar = YAML.CST.FlowScalar & {
+  type: Exclude<
+    YAML.CST.FlowScalar["type"],
+    (DoubleQuotedFlowScalar | SingleQuotedFlowScalar)["type"]
+  >;
+};
+export type FlowScalar =
+  | DoubleQuotedFlowScalar
+  | SingleQuotedFlowScalar
+  | OtherFlowScalar;
+
+/**
+ * Generator to iterate over tokens, skipping space and newline tokens.
+ */
+export function* tokens<T extends YAML.CST.Token>(
+  ...tokensArgs: (Iterable<T> | undefined)[]
+): Iterable<Exclude<T, YAML.CST.SourceToken> | SourceToken> {
+  for (const tokens of tokensArgs) {
+    if (!tokens) continue;
+    for (const token of tokens) {
+      if (isSpace(token)) continue;
+      yield token as Exclude<T, YAML.CST.SourceToken> | SourceToken;
+    }
+  }
+}
+
+/**
+ * Type guard to check if a token is a space or newline token.
+ */
+function isSpace<T extends YAML.CST.Token["type"]>(token: {
+  type: T;
+}): token is { type: T & ("space" | "newline") } {
+  return token.type === "space" || token.type === "newline";
+}
+
+export type ContentPropertyToken =
+  | CommentSourceToken
+  | TagSourceToken
+  | AnchorSourceToken;
+/**
+ * Type guard to check if a token is a content property token (comment, tag, or anchor).
+ */
+export function maybeContentPropertyToken(
+  token: YAML.CST.SourceToken,
+): token is ContentPropertyToken {
+  return (
+    token.type === "comment" || token.type === "tag" || token.type === "anchor"
+  );
+}

src/factories/position.ts

@@ -1,4 +1,4 @@
-import { type Point, type Position } from "../types.js";
+import type { Point, Position } from "../types.js";
 
 export function createPosition(start: Point, end: Point): Position {
   return { start, end };

src/helpers.ts

@@ -1,5 +1,4 @@
 import { wrap } from "jest-snapshot-serializer-raw";
-import { type YAMLSemanticError, type YAMLSyntaxError } from "yaml/util";
 import { parse } from "./parse.js";
 import {
   type Anchor,
@@ -8,6 +7,7 @@ import {
   type Position,
   type Root,
   type Tag,
+  type YAMLSyntaxError,
   type YamlUnistNode,
 } from "./types.js";
 
@@ -334,14 +334,13 @@ export function testSyntaxError(text: string, message?: string) {
     }
     test(message || error.message, () => {
       expect(
-        // @ts-expect-error -- FIXME
         error.message + "\n" + codeFrameColumns(error.source, error.position),
       ).toMatchSnapshot();
     });
   }
 }
 
-function isYAMLError(e: any): e is YAMLSyntaxError | YAMLSemanticError {
+function isYAMLError(e: any): e is YAMLSyntaxError {
   return (
     e instanceof Error &&
     (e.name === "YAMLSyntaxError" || e.name === "YAMLSemanticError")

src/options.test.ts

@@ -19,11 +19,9 @@ for (const { type, text } of [
   { type: "flowMapping", text: `{"a":1,"a":2}` },
 ]) {
   test(`(${type}): duplicate keys in ${text}`, () => {
-    expect(() => parse(text)).toThrowError(
-      `Map keys must be unique; "a" is repeated`,
-    );
+    expect(() => parse(text)).toThrowError(`Map keys must be unique`);
     expect(() => parse(text, { allowDuplicateKeysInMap: false })).toThrowError(
-      `Map keys must be unique; "a" is repeated`,
+      `Map keys must be unique`,
     );
     const ast = parse(text, { allowDuplicateKeysInMap: true });
     expect(ast).toBeDefined();