diff --git a/bin/doc/generate.js b/bin/doc/generate.js
index 803f5017e..d04468a8b 100644
--- a/bin/doc/generate.js
+++ b/bin/doc/generate.js
@@ -1,4 +1,7 @@
 #!/usr/bin/env node
+
+'use strict';
+
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -20,7 +23,6 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-const marked = require('marked');
 const fs = require('fs');
 const path = require('path');
 
@@ -33,12 +35,12 @@ let template = null;
 let inputFile = null;
 
 args.forEach((arg) => {
-  if (!arg.match(/^\-\-/)) {
+  if (!arg.match(/^--/)) {
     inputFile = arg;
-  } else if (arg.match(/^\-\-format=/)) {
-    format = arg.replace(/^\-\-format=/, '');
-  } else if (arg.match(/^\-\-template=/)) {
-    template = arg.replace(/^\-\-template=/, '');
+  } else if (arg.match(/^--format=/)) {
+    format = arg.replace(/^--format=/, '');
+  } else if (arg.match(/^--template=/)) {
+    template = arg.replace(/^--template=/, '');
   }
 });
 
@@ -56,11 +58,11 @@ fs.readFile(inputFile, 'utf8', (er, input) => {
 });
 
 
-const includeExpr = /^@include\s+([A-Za-z0-9-_\/]+)(?:\.)?([a-zA-Z]*)$/gmi;
+const includeExpr = /^@include\s+([A-Za-z0-9-_/]+)(?:\.)?([a-zA-Z]*)$/gmi;
 const includeData = {};
-function processIncludes(inputFile, input, cb) {
+const processIncludes = (inputFile, input, cb) => {
   const includes = input.match(includeExpr);
-  if (includes === null) return cb(null, input);
+  if (includes == null) return cb(null, input);
   let errState = null;
   console.error(includes);
   let incCount = includes.length;
@@ -70,7 +72,7 @@ function processIncludes(inputFile, input, cb) {
     let fname = include.replace(/^@include\s+/, '');
     if (!fname.match(/\.md$/)) fname += '.md';
 
-    if (includeData.hasOwnProperty(fname)) {
+    if (Object.prototype.hasOwnProperty.call(includeData, fname)) {
       input = input.split(include).join(includeData[fname]);
       incCount--;
       if (incCount === 0) {
@@ -94,10 +96,10 @@ function processIncludes(inputFile, input, cb) {
       });
     });
   });
-}
+};
 
 
-function next(er, input) {
+const next = (er, input) => {
   if (er) throw er;
   switch (format) {
     case 'json':
@@ -117,4 +119,4 @@ function next(er, input) {
     default:
       throw new Error(`Invalid format: ${format}`);
   }
-}
+};
diff --git a/bin/doc/html.js b/bin/doc/html.js
index 26cf3f185..2c38aec23 100644
--- a/bin/doc/html.js
+++ b/bin/doc/html.js
@@ -1,3 +1,5 @@
+'use strict';
+
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -23,17 +25,17 @@ const fs = require('fs');
 const marked = require('marked');
 const path = require('path');
 
-module.exports = toHTML;
 
-function toHTML(input, filename, template, cb) {
+const toHTML = (input, filename, template, cb) => {
   const lexed = marked.lexer(input);
   fs.readFile(template, 'utf8', (er, template) => {
     if (er) return cb(er);
     render(lexed, filename, template, cb);
   });
-}
+};
+module.exports = toHTML;
 
-function render(lexed, filename, template, cb) {
+const render = (lexed, filename, template, cb) => {
   // get the section
   const section = getSection(lexed);
 
@@ -52,23 +54,23 @@ function render(lexed, filename, template, cb) {
 
     // content has to be the last thing we do with
     // the lexed tokens, because it's destructive.
-    content = marked.parser(lexed);
+    const content = marked.parser(lexed);
     template = template.replace(/__CONTENT__/g, content);
 
     cb(null, template);
   });
-}
+};
 
 
 // just update the list item text in-place.
 // lists that come right after a heading are what we're after.
-function parseLists(input) {
+const parseLists = (input) => {
   let state = null;
   let depth = 0;
   const output = [];
   output.links = input.links;
   input.forEach((tok) => {
-    if (state === null) {
+    if (state == null) {
       if (tok.type === 'heading') {
         state = 'AFTERHEADING';
       }
@@ -112,29 +114,27 @@ function parseLists(input) {
   });
 
   return output;
-}
+};
 
 
-function parseListItem(text) {
-  text = text.replace(/\{([^\}]+)\}/, '<span class="type">$1</span>');
+const parseListItem = (text) => {
+  text = text.replace(/\{([^}]+)\}/, '<span class="type">$1</span>');
   // XXX maybe put more stuff here?
   return text;
-}
+};
 
 
 // section is just the first heading
-function getSection(lexed) {
-  const section = '';
+const getSection = (lexed) => {
   for (let i = 0, l = lexed.length; i < l; i++) {
     const tok = lexed[i];
     if (tok.type === 'heading') return tok.text;
   }
   return '';
-}
+};
 
 
-function buildToc(lexed, filename, cb) {
-  const indent = 0;
+const buildToc = (lexed, filename, cb) => {
   let toc = [];
   let depth = 0;
   lexed.forEach((tok) => {
@@ -155,18 +155,18 @@ function buildToc(lexed, filename, cb) {
 
   toc = marked.parse(toc.join('\n'));
   cb(null, toc);
-}
+};
 
 const idCounters = {};
-function getId(text) {
+const getId = (text) => {
   text = text.toLowerCase();
   text = text.replace(/[^a-z0-9]+/g, '_');
   text = text.replace(/^_+|_+$/, '');
   text = text.replace(/^([^a-z])/, '_$1');
-  if (idCounters.hasOwnProperty(text)) {
+  if (Object.prototype.hasOwnProperty.call(idCounters, text)) {
     text += `_${++idCounters[text]}`;
   } else {
     idCounters[text] = 0;
   }
   return text;
-}
+};
diff --git a/bin/doc/json.js b/bin/doc/json.js
index 3ce62a301..c71611e5f 100644
--- a/bin/doc/json.js
+++ b/bin/doc/json.js
@@ -1,3 +1,4 @@
+'use strict';
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -26,7 +27,7 @@ module.exports = doJSON;
 
 const marked = require('marked');
 
-function doJSON(input, filename, cb) {
+const doJSON = (input, filename, cb) => {
   const root = {source: filename};
   const stack = [root];
   let depth = 0;
@@ -40,7 +41,7 @@ function doJSON(input, filename, cb) {
     // <!-- type = module -->
     // This is for cases where the markdown semantic structure is lacking.
     if (type === 'paragraph' || type === 'html') {
-      const metaExpr = /<!--([^=]+)=([^\-]+)-->\n*/g;
+      const metaExpr = /<!--([^=]+)=([^-]+)-->\n*/g;
       text = text.replace(metaExpr, (_0, k, v) => {
         current[k.trim()] = v.trim();
         return '';
@@ -146,7 +147,7 @@ function doJSON(input, filename, cb) {
   }
 
   return cb(null, root);
-}
+};
 
 
 // go from something like this:
@@ -191,7 +192,7 @@ function doJSON(input, filename, cb) {
 //          desc: 'whether or not to send output to parent\'s stdio.',
 //          default: 'false' } ] } ]
 
-function processList(section) {
+const processList = (section) => {
   const list = section.list;
   const values = [];
   let current;
@@ -203,13 +204,13 @@ function processList(section) {
     if (type === 'space') return;
     if (type === 'list_item_start') {
       if (!current) {
-        var n = {};
+        const n = {};
         values.push(n);
         current = n;
       } else {
         current.options = current.options || [];
         stack.push(current);
-        var n = {};
+        const n = {};
         current.options.push(n);
         current = n;
       }
@@ -283,11 +284,11 @@ function processList(section) {
 
   // section.listParsed = values;
   delete section.list;
-}
+};
 
 
 // textRaw = "someobject.someMethod(a, [b=100], [c])"
-function parseSignature(text, sig) {
+const parseSignature = (text, sig) => {
   let params = text.match(paramExpr);
   if (!params) return;
   params = params[1];
@@ -322,10 +323,10 @@ function parseSignature(text, sig) {
     if (optional) param.optional = true;
     if (def !== undefined) param.default = def;
   });
-}
+};
 
 
-function parseListItem(item) {
+const parseListItem = (item) => {
   if (item.options) item.options.forEach(parseListItem);
   if (!item.textRaw) return;
 
@@ -341,7 +342,7 @@ function parseListItem(item) {
     item.name = 'return';
     text = text.replace(retExpr, '');
   } else {
-    const nameExpr = /^['`"]?([^'`": \{]+)['`"]?\s*:?\s*/;
+    const nameExpr = /^['`"]?([^'`": {]+)['`"]?\s*:?\s*/;
     const name = text.match(nameExpr);
     if (name) {
       item.name = name[1];
@@ -358,7 +359,7 @@ function parseListItem(item) {
   }
 
   text = text.trim();
-  const typeExpr = /^\{([^\}]+)\}/;
+  const typeExpr = /^\{([^}]+)\}/;
   const type = text.match(typeExpr);
   if (type) {
     item.type = type[1];
@@ -376,10 +377,10 @@ function parseListItem(item) {
   text = text.replace(/^\s*-\s*/, '');
   text = text.trim();
   if (text) item.desc = text;
-}
+};
 
 
-function finishSection(section, parent) {
+const finishSection = (section, parent) => {
   if (!section || !parent) {
     throw new Error(`Invalid finishSection call\n${
       JSON.stringify(section)}\n${
@@ -479,50 +480,50 @@ function finishSection(section, parent) {
 
   parent[plur] = parent[plur] || [];
   parent[plur].push(section);
-}
+};
 
 
 // Not a general purpose deep copy.
 // But sufficient for these basic things.
-function deepCopy(src, dest) {
+const deepCopy = (src, dest) => {
   Object.keys(src).filter((k) => !dest.hasOwnProperty(k)).forEach((k) => {
     dest[k] = deepCopy_(src[k]);
   });
-}
+};
 
-function deepCopy_(src) {
+const deepCopy_ = (src) => {
   if (!src) return src;
   if (Array.isArray(src)) {
-    var c = new Array(src.length);
+    const c = new Array(src.length);
     src.forEach((v, i) => {
       c[i] = deepCopy_(v);
     });
     return c;
   }
   if (typeof src === 'object') {
-    var c = {};
+    const c = {};
     Object.keys(src).forEach((k) => {
       c[k] = deepCopy_(src[k]);
     });
     return c;
   }
   return src;
-}
+};
 
 
 // these parse out the contents of an H# tag
 const eventExpr = /^Event(?::|\s)+['"]?([^"']+).*$/i;
 const classExpr = /^Class:\s*([^ ]+).*?$/i;
-const propExpr = /^(?:property:?\s*)?[^\.]+\.([^ \.\(\)]+)\s*?$/i;
-const braceExpr = /^(?:property:?\s*)?[^\.\[]+(\[[^\]]+\])\s*?$/i;
+const propExpr = /^(?:property:?\s*)?[^.]+\.([^ .()]+)\s*?$/i;
+const braceExpr = /^(?:property:?\s*)?[^.[]+(\[[^\]]+\])\s*?$/i;
 const classMethExpr =
-  /^class\s*method\s*:?[^\.]+\.([^ \.\(\)]+)\([^\)]*\)\s*?$/i;
+  /^class\s*method\s*:?[^.]+\.([^ .()]+)\([^)]*\)\s*?$/i;
 const methExpr =
-  /^(?:method:?\s*)?(?:[^\.]+\.)?([^ \.\(\)]+)\([^\)]*\)\s*?$/i;
-const newExpr = /^new ([A-Z][a-z]+)\([^\)]*\)\s*?$/;
-var paramExpr = /\((.*)\);?$/;
+  /^(?:method:?\s*)?(?:[^.]+\.)?([^ .()]+)\([^)]*\)\s*?$/i;
+const newExpr = /^new ([A-Z][a-z]+)\([^)]*\)\s*?$/;
+const paramExpr = /\((.*)\);?$/;
 
-function newSection(tok) {
+const newSection = (tok) => {
   const section = {};
   // infer the type from the text.
   const text = section.textRaw = tok.text;
@@ -551,4 +552,4 @@ function newSection(tok) {
     section.name = text;
   }
   return section;
-}
+};
diff --git a/bin/doc/package.json b/bin/doc/package.json
index 1a29f1b1c..2f027616c 100644
--- a/bin/doc/package.json
+++ b/bin/doc/package.json
@@ -4,7 +4,7 @@
   "description": "Internal tool for generating Node.js API docs",
   "version": "0.0.0",
   "engines": {
-    "node": ">=0.6.10"
+    "node": ">=10.17.0"
   },
   "dependencies": {
     "marked": "0.8.2"