Add --unsafe flag, fixes #177

README.md

@@ -180,6 +180,10 @@ const DEFAULT_MARKDOWN_OPTIONS = {
 };
 ```
 
+#### `--unsafe`
+
+Disables some [JSDOM validations](https://github.com/jsdom/jsdom/blob/main/lib/jsdom/living/helpers/validate-names.js) that may throw an error when parsing invalid HTML pages (See [#177](https://github.com/danburzo/percollate/issues/177)).
+
 ## Recipes
 
 ### Basic bundling

cli.js

@@ -137,6 +137,9 @@ Commmon options:
   --inline               Embed images inline with the content.
                          Fetches and converts images to Base64 'data:' URLs.
 
+  --unsafe               Disable some validations in JSDOM to suppress some
+                         errors thrown for invalid HTML inputs. 
+
 Options to disable features:
 
   --no-amp               Don't prefer the AMP version of the web page.

index.js

@@ -8,6 +8,8 @@ import pup from 'puppeteer';
 import archiver from 'archiver';
 import fetch from 'node-fetch';
 import { JSDOM } from 'jsdom';
+import validateNames from 'jsdom/lib/jsdom/living/helpers/validate-names.js';
+
 import nunjucks from 'nunjucks';
 import css from 'css';
 import { Readability } from '@mozilla/readability';
@@ -229,6 +231,18 @@ async function cleanup(url, options) {
 				? url
 				: 'file://' + path.resolve(url);
 
+		/*
+			Disable some validations in JSDOM to allow
+			some invalid HTML files to be processed correctly.
+
+			Currently done via monkey-patching. See:
+			https://github.com/danburzo/percollate/issues/177
+		*/
+		if (options.unsafe) {
+			// make no-op
+			validateNames.name = () => {};
+		}
+
 		const dom = new JSDOM(buffer, {
 			contentType,
 			url: final_url