Update dev-dependencies

Author: wooorm

package.json

@@ -43,14 +43,14 @@
     "mdast-util-from-markdown": "^1.0.0",
     "mdast-util-to-markdown": "^1.0.0",
     "prettier": "^2.0.0",
-    "remark-cli": "^9.0.0",
-    "remark-preset-wooorm": "^8.0.0",
+    "remark-cli": "^10.0.0",
+    "remark-preset-wooorm": "^9.0.0",
     "rimraf": "^3.0.0",
     "tape": "^5.0.0",
     "type-coverage": "^2.0.0",
     "typescript": "^4.0.0",
     "unist-util-remove-position": "^4.0.0",
-    "xo": "^0.42.0"
+    "xo": "^0.45.0"
   },
   "scripts": {
     "build": "rimraf \"{index,test}.d.ts\" && tsc && type-coverage",

test-types.d.ts

@@ -1,10 +1,10 @@
 import {Literal} from 'mdast'
 
-interface TOML extends Literal {
+interface Toml extends Literal {
   type: 'toml'
 }
 
-interface JSON extends Literal {
+interface Json extends Literal {
   type: 'json'
 }
 
@@ -13,10 +13,9 @@ interface Custom extends Literal {
 }
 
 declare module 'mdast' {
-  // To do: this should be `FrontmatterMap`, which doesn’t exist yet.
-  interface BlockContentMap {
-    toml: TOML
+  interface FrontmatterContentMap {
+    toml: Toml
     custom: Custom
-    json: JSON
+    json: Json
   }
 }