tools: avoid pending deprecation in doc generator

`unist-util-find` depends on `lodash.iteratee` which uses
`process.binding()`.
Let's remove this dependency which is used in one place to do a very
simple thing.
PR-URL: #37267
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>

Author: targos

tools/doc/html.js

@@ -24,7 +24,6 @@
 constcommon=require('./common.js');
 constfs=require('fs');
 constunified=require('unified');
-constfind=require('unist-util-find');
 constvisit=require('unist-util-visit');
 constmarkdown=require('remark-parse');
 constgfm=require('remark-gfm');
@@ -97,7 +96,13 @@ function toHTML({ input, content, filename, nodeVersion, versions }) {
 // Set the section name based on the first header. Default to 'Index'.
 functionfirstHeader(){
 return(tree,file)=>{
-constheading=find(tree,{type: 'heading'});
+letheading;
+visit(tree,(node)=>{
+if(node.type==='heading'){
+heading=node;
+returnfalse;
+}
+});
 
 if(heading&&heading.children.length){
 constrecursiveTextContent=(node)=>

tools/doc/package-lock.json

@@ -17,7 +17,6 @@
 "remark-rehype": "8.0.0",
 "to-vfile": "6.1.0",
 "unified": "9.2.0",
-"unist-util-find": "^1.0.2",
 "unist-util-select": "3.0.4",
 "unist-util-visit": "2.0.3"
  },