Remove support for nested nodes

Frontmatter nodes only exist on the mdast root.
remcohaszing · Nov 7, 2021 · 4e9d66f · 4e9d66f
1 parent 7c7b001
commit 4e9d66f
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Showing 3 changed files with 4 additions and 27 deletions.
diff --git a/package.json b/package.json
@@ -40,8 +40,7 @@
     "estree-util-is-identifier-name": "^1.0.0",
     "estree-util-value-to-estree": "^1.0.0",
     "js-yaml": "^4.0.0",
-    "toml": "^3.0.0",
-    "unist-util-visit": "^2.0.0"
+    "toml": "^3.0.0"
   },
   "devDependencies": {
     "@mdx-js/mdx": "^2.0.0-rc.1",

diff --git a/src/index.ts b/src/index.ts
@@ -5,7 +5,6 @@ import { Root, YAML } from 'mdast';
 import { MDXJSEsm } from 'mdast-util-mdx';
 import { parse } from 'toml';
 import { Attacher } from 'unified';
-import * as visit from 'unist-util-visit';
 
 export interface RemarkMdxFrontmatterOptions {
   /**
@@ -35,11 +34,12 @@ export const remarkMdxFrontmatter: Attacher<[RemarkMdxFrontmatterOptions?]> =
       );
     }
 
-    visit(mdast, (node) => {
+    for (const node of mdast.children) {
       let data: unknown;
       const { value } = node as YAML;
       if (node.type === 'yaml') {
         data = load(value);
+        // @ts-expect-error A custom node type may be registered for TOML frontmatter data.
       } else if (node.type === 'toml') {
         data = parse(value);
       }
@@ -87,6 +87,6 @@ export const remarkMdxFrontmatter: Attacher<[RemarkMdxFrontmatterOptions?]> =
           },
         },
       });
-    });
+    }
     mdast.children.unshift(...imports);
   };
diff --git a/yarn.lock b/yarn.lock
@@ -3472,11 +3472,6 @@ unist-util-generated@^2.0.0:
   resolved "https://registry.yarnpkg.com/unist-util-generated/-/unist-util-generated-2.0.0.tgz#86fafb77eb6ce9bfa6b663c3f5ad4f8e56a60113"
   integrity sha512-TiWE6DVtVe7Ye2QxOVW9kqybs6cZexNwTwSMVgkfjEReqy/xwGpAXb99OxktoWwmL+Z+Epb0Dn8/GNDYP1wnUw==
 
-unist-util-is@^4.0.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/unist-util-is/-/unist-util-is-4.1.0.tgz#976e5f462a7a5de73d94b706bac1b90671b57797"
-  integrity sha512-ZOQSsnce92GrxSqlnEEseX0gi7GH9zTJZ0p9dtu87WRb/37mMPO2Ilx1s/t9vBHrFhbgweUwb+t7cIn5dxPhZg==
-
 unist-util-is@^5.0.0:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/unist-util-is/-/unist-util-is-5.1.1.tgz#e8aece0b102fa9bc097b0fef8f870c496d4a6236"
@@ -3516,14 +3511,6 @@ unist-util-stringify-position@^3.0.0:
   dependencies:
     "@types/unist" "^2.0.0"
 
-unist-util-visit-parents@^3.0.0:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/unist-util-visit-parents/-/unist-util-visit-parents-3.1.1.tgz#65a6ce698f78a6b0f56aa0e88f13801886cdaef6"
-  integrity sha512-1KROIZWo6bcMrZEwiH2UrXDyalAa0uqzWCxCJj6lPOvTve2WkfgCytoDTPaMnodXh1WrXOq0haVYHj99ynJlsg==
-  dependencies:
-    "@types/unist" "^2.0.0"
-    unist-util-is "^4.0.0"
-
 unist-util-visit-parents@^4.0.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/unist-util-visit-parents/-/unist-util-visit-parents-4.1.1.tgz#e83559a4ad7e6048a46b1bdb22614f2f3f4724f2"
@@ -3540,15 +3527,6 @@ unist-util-visit-parents@^5.0.0:
     "@types/unist" "^2.0.0"
     unist-util-is "^5.0.0"
 
-unist-util-visit@^2.0.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/unist-util-visit/-/unist-util-visit-2.0.3.tgz#c3703893146df47203bb8a9795af47d7b971208c"
-  integrity sha512-iJ4/RczbJMkD0712mGktuGpm/U4By4FfDonL7N/9tATGIF4imikjOuagyMY53tnZq3NP6BcmlrHhEKAfGWjh7Q==
-  dependencies:
-    "@types/unist" "^2.0.0"
-    unist-util-is "^4.0.0"
-    unist-util-visit-parents "^3.0.0"
-
 unist-util-visit@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/unist-util-visit/-/unist-util-visit-3.1.0.tgz#9420d285e1aee938c7d9acbafc8e160186dbaf7b"